The document discusses acid-base balance and pH. It defines acids and bases, noting that acids donate protons while bases accept protons. pH is defined as the negative logarithm of hydrogen ion concentration. Strong acids ionize completely while weak acids only partially ionize. The Henderson-Hasselbalch equation relates pH, pKa, and concentrations of acid and conjugate base. Buffers resist pH changes when acids or bases are added. The body maintains acid-base balance through bicarbonate, phosphate, protein, and hemoglobin buffer systems as well as respiratory and renal regulation.
The document discusses acid-base balance and regulation in the body. It covers:
1. Acids and bases, describing acids as hydrogen ion donors and bases as hydrogen ion acceptors. The body regulates pH through buffer systems, respiration, and the kidneys.
2. The two main buffer systems are bicarbonate-carbonic acid and phosphate buffers. Bicarbonate buffers changes caused by acids and bases in extracellular fluid, while phosphate buffers intracellular fluid.
3. The kidneys regulate pH by reabsorbing bicarbonate, secreting hydrogen ions, and excreting acids such as titratable acid and ammonium ions. This maintains acid-base homeostasis.
4
This document discusses acid-base balance and disorders. It covers 3 key mechanisms to maintain blood pH: 1) blood buffers, 2) respiratory regulation, and 3) renal regulation. The blood's bicarbonate buffer system uses carbonic acid, while tissues also use phosphate and protein buffers. Respiration controls pH by regulating CO2 exhalation. The kidneys compensate for acid-base imbalances over hours by regulating bicarbonate reabsorption and acid excretion. Acid-base disorders include respiratory and metabolic acidosis and alkalosis.
Concepts of acid base balance and its disorders are very important for practice of medicine.It is for the benefit of medical and students of allied fields.
The state of equilibrium between proton donors and proton acceptors in the buffering system of the blood that is maintained at approximately pH 7.35 to 7.45 under normal conditions in arterial blood.
The state of equilibrium between proton donors and proton acceptors in the buffering system of the blood that is maintained at approximately pH 7.35 to 7.45 under normal conditions in arterial blood.
Buffer is any mechanism that resists changes in pH by converting a strong acid or base to a weak one.
acid and base with acid and base disordersAlabiDavid4
This document provides an overview of acid-base biochemistry, including definitions of acids and bases, pH and how it is measured, physiological pH ranges, hydrogen ion homeostasis, and the clinical importance of acid-base disorders. Key points include: acids donate hydrogen ions in solution while bases accept hydrogen ions; pH is a measure of hydrogen ion concentration; buffers like bicarbonate help maintain pH within a narrow range; the lungs and kidneys play important roles in regulating hydrogen ion concentration and excretion; and acid-base imbalances can be respiratory or metabolic in nature.
This document discusses acid-base balance and the mechanisms that regulate pH in the body. It defines key terms like acids, bases, buffers and discusses the major buffer systems that maintain pH, including the bicarbonate buffer system, protein buffers, and phosphate buffers. The lungs and kidneys play important roles in regulation by controlling the excretion of acids and bases. Deviations from normal pH can result in acidosis or alkalosis, which are classified as metabolic or respiratory based on their underlying cause. Arterial blood gases are an important diagnostic tool to assess acid-base balance and oxygenation.
This document discusses acid-base balance and pH. It defines pH as the negative log of the hydrogen ion concentration. The pH scale ranges from 0 to 14, with values below 7 being acidic and above 7 being basic. The body maintains acid-base balance through buffer systems like bicarbonate and proteins, and respiratory and renal compensation mechanisms. Disturbances in acid-base balance can cause metabolic acidosis, metabolic alkalosis, respiratory acidosis, or respiratory alkalosis.
The document discusses acid-base balance and regulation in the body. It covers:
1. Acids and bases, describing acids as hydrogen ion donors and bases as hydrogen ion acceptors. The body regulates pH through buffer systems, respiration, and the kidneys.
2. The two main buffer systems are bicarbonate-carbonic acid and phosphate buffers. Bicarbonate buffers changes caused by acids and bases in extracellular fluid, while phosphate buffers intracellular fluid.
3. The kidneys regulate pH by reabsorbing bicarbonate, secreting hydrogen ions, and excreting acids such as titratable acid and ammonium ions. This maintains acid-base homeostasis.
4
This document discusses acid-base balance and disorders. It covers 3 key mechanisms to maintain blood pH: 1) blood buffers, 2) respiratory regulation, and 3) renal regulation. The blood's bicarbonate buffer system uses carbonic acid, while tissues also use phosphate and protein buffers. Respiration controls pH by regulating CO2 exhalation. The kidneys compensate for acid-base imbalances over hours by regulating bicarbonate reabsorption and acid excretion. Acid-base disorders include respiratory and metabolic acidosis and alkalosis.
Concepts of acid base balance and its disorders are very important for practice of medicine.It is for the benefit of medical and students of allied fields.
The state of equilibrium between proton donors and proton acceptors in the buffering system of the blood that is maintained at approximately pH 7.35 to 7.45 under normal conditions in arterial blood.
The state of equilibrium between proton donors and proton acceptors in the buffering system of the blood that is maintained at approximately pH 7.35 to 7.45 under normal conditions in arterial blood.
Buffer is any mechanism that resists changes in pH by converting a strong acid or base to a weak one.
acid and base with acid and base disordersAlabiDavid4
This document provides an overview of acid-base biochemistry, including definitions of acids and bases, pH and how it is measured, physiological pH ranges, hydrogen ion homeostasis, and the clinical importance of acid-base disorders. Key points include: acids donate hydrogen ions in solution while bases accept hydrogen ions; pH is a measure of hydrogen ion concentration; buffers like bicarbonate help maintain pH within a narrow range; the lungs and kidneys play important roles in regulating hydrogen ion concentration and excretion; and acid-base imbalances can be respiratory or metabolic in nature.
This document discusses acid-base balance and the mechanisms that regulate pH in the body. It defines key terms like acids, bases, buffers and discusses the major buffer systems that maintain pH, including the bicarbonate buffer system, protein buffers, and phosphate buffers. The lungs and kidneys play important roles in regulation by controlling the excretion of acids and bases. Deviations from normal pH can result in acidosis or alkalosis, which are classified as metabolic or respiratory based on their underlying cause. Arterial blood gases are an important diagnostic tool to assess acid-base balance and oxygenation.
This document discusses acid-base balance and pH. It defines pH as the negative log of the hydrogen ion concentration. The pH scale ranges from 0 to 14, with values below 7 being acidic and above 7 being basic. The body maintains acid-base balance through buffer systems like bicarbonate and proteins, and respiratory and renal compensation mechanisms. Disturbances in acid-base balance can cause metabolic acidosis, metabolic alkalosis, respiratory acidosis, or respiratory alkalosis.
essential details on maintenance of extracellular fluid pH, Especially Blood for normal physiological function of the body and condition associated wit acid base imbalance
This document discusses acid-base balance and disorders. It defines acids and bases according to early definitions based on taste and litmus paper reactions, and the modern Brønsted-Lowry definitions involving proton donation and acceptance. pH is introduced as a measure of acidity, and how body regulates pH through buffering, respiration, and renal mechanisms is described. Finally, classifications of acid-base disorders by pH and cause are outlined.
The document discusses acid-base balance and homeostasis in the human body. It covers three main mechanisms for maintaining pH levels:
1) Buffer systems like carbonic acid-bicarbonate and proteins which temporarily bind excess hydrogen ions.
2) Exhalation of carbon dioxide through breathing, which reduces carbonic acid levels and raises blood pH within minutes.
3) Kidney excretion of hydrogen ions in urine over longer periods, which is needed to eliminate non-volatile acids produced by metabolism. Together these mechanisms tightly regulate pH through feedback loops and keep levels appropriate for cellular functions.
1. The pH scale ranges from 0 to 14 and indicates the concentration of hydrogen ions (H+) in a solution, with lower numbers representing higher acidity and higher numbers representing higher alkalinity.
2. Buffers help maintain pH when small amounts of acid or base are added. Common buffer systems include carbonic acid/bicarbonate in blood and weak acids/bases and their conjugates.
3. Redox potential is a quantitative measure of the tendency of a chemical species to acquire or lose electrons during a redox reaction. It can be calculated using Nernst's or Peter's equation and indicates the strength of oxidizing or reducing agents.
The document discusses acid-base balance and buffer systems in the body. It explains that acids are hydrogen ion donors and bases are hydrogen ion acceptors. Buffers stabilize pH by donating or accepting hydrogen ions. The main buffer systems in the body are bicarbonate, proteins, and phosphates. The bicarbonate buffer system uses bicarbonate and carbonic acid to maintain pH. The Henderson-Hasselbalch equation is used to calculate pH based on bicarbonate and carbon dioxide levels. Kidneys help regulate pH by excreting hydrogen ions and reabsorbing bicarbonate. Metabolic acidosis occurs when bicarbonate levels drop, while metabolic alkalosis occurs when b
This patient appears to be in hemorrhagic shock from his injuries sustained in the motor vehicle crash. His thready pulse and low blood pressure indicate he has lost a significant amount of blood and is hypovolemic. Immediate treatment should focus on resuscitation with intravenous fluids and blood products to restore circulating volume and improve end organ perfusion. His condition requires prompt intervention to prevent further hemodynamic instability and potential organ dysfunction or failure.
This document provides a summary of acid-base physiology, including:
1) Homeostatic mechanisms that regulate acid-base balance, including chemical buffers, respiratory regulation, and renal regulation.
2) Definitions of acids, bases, and the pH scale. Acidosis and alkalosis can arise from excess or deficits of volatile or fixed acids.
3) Key concepts in acid-base regulation including the Henderson-Hasselbalch equation and analyzing arterial blood gases.
Buffers in the body resist changes in pH and maintain it within a narrow range. The major buffer systems are bicarbonate, phosphate, and proteins. Bicarbonate buffers work by absorbing excess hydrogen ions in the blood and tissues. The kidneys and lungs work together to control bicarbonate and carbon dioxide levels to regulate pH. When an acid is added, buffers prevent a large change in pH by neutralizing the hydrogen ions.
This document defines key terms related to acid-base homeostasis, including acids, bases, pH, buffers, and the mechanisms that regulate hydrogen ion concentration in the blood. It discusses how the major buffer systems, especially the bicarbonate-carbonic acid system, help maintain acid-base balance. Respiration and the kidneys work together to remove acids produced during metabolism and regulate the excretion of non-volatile acids and bicarbonate.
This document discusses acid-base balance and buffers. It defines pH and describes strong and weak acids and bases. The key physiological buffers - bicarbonate, phosphate, hemoglobin and proteins/amino acids - are explained in terms of how they maintain blood pH during the addition of acids or bases. The document also covers acid-base imbalance disorders like acidosis and alkalosis, their causes and compensation mechanisms. Arterial blood gases are described as a way to diagnose acid-base disorders. An example case of metabolic acidosis in an infant with diarrhea is analyzed.
The document defines key terms related to acid-base balance including acids, bases, pH, buffers, and acidosis and alkalosis. It then discusses the major blood buffer systems that help regulate pH, including the protein, hemoglobin, phosphate, and bicarbonate-carbonic acid systems. The bicarbonate-carbonic acid system functions through the reversible reaction of carbon dioxide and water to form carbonic acid which dissociates into bicarbonate and hydrogen ions. The document also covers respiratory and renal compensation mechanisms that help return pH to normal levels in response to acid-base imbalances through lung and kidney functions.
The document defines key terms related to acid-base balance such as acids, bases, pH, buffers, and acidosis and alkalosis. It describes the four major blood buffer systems - protein, hemoglobin, phosphate, and bicarbonate/carbonic acid. The relationship between pH, bicarbonate, and carbonic acid is explained using the Henderson-Hasselbalch equation. The roles of the lungs and kidneys in regulating pH through respiratory and renal compensation are discussed. The document outlines the characteristics of uncompensated, partially compensated, compensated, and mixed acid-base imbalances.
1. The human body maintains electrolyte and acid-base balance through various mechanisms. Electrolytes like sodium, potassium, chloride, and bicarbonate are regulated in extracellular and intracellular fluids.
2. The body maintains blood pH around 7.4 through three lines of defense - blood buffers, respiratory system, and renal system. The major blood buffer is bicarbonate, which works with carbonic acid. The lungs regulate carbonic acid levels through breathing.
3. The kidneys regulate pH by excreting hydrogen ions, reabsorbing bicarbonate, and excreting titratable acids and ammonium ions. The kidneys play a key role in eliminating acids produced by the
This document discusses acids and bases in the body. It defines acids as hydrogen containing substances that dissociate to release H+ ions and bases as substances that accept H+ ions. The key physiological acids and bases are discussed including bicarbonate, phosphate, and proteins. The three main mechanisms that regulate blood pH - buffers, respiration, and the kidneys - are summarized. Respiration controls carbonic acid levels while the kidneys regulate bicarbonate reabsorption and acid excretion to maintain pH. Acid-base imbalances can cause metabolic acidosis or alkalosis and respiratory acidosis or alkalosis depending on primary disorder.
The document summarizes regulation of acid-base balance in the body. There are three primary systems that regulate hydrogen ion concentration: (1) buffer systems that release or bind hydrogen ions, (2) the respiratory center that controls exhalation of carbon dioxide, and (3) the kidneys which can excrete acidic or alkaline urine. The kidneys play a key role through secreting hydrogen ions, reabsorbing bicarbonate, and generating new bicarbonate through buffers like phosphate and ammonia. Together, these systems tightly control pH to prevent acidosis or alkalosis.
This document discusses acid-base balance and the mechanisms that regulate pH levels in the human body. It covers topics like buffers, respiratory regulation, and renal regulation of pH. The three main points are:
1) Buffers like bicarbonate help maintain pH levels by neutralizing excess hydrogen ions. The Henderson-Hasselbalch equation describes the buffering capacity of bicarbonate.
2) The respiratory system regulates pH rapidly through exhalation of carbon dioxide. Hemoglobin transports carbon dioxide as bicarbonate from tissues to the lungs.
3) The kidneys regulate pH over longer periods through reabsorption of bicarbonate, and excretion of fixed acids, ammonium
acid base balance postgraduate 2022-2023.pptxMichaelSaif
This document discusses acid-base balance and homeostasis. It notes that acid-base balance refers to keeping the concentration of hydrogen ions constant in body fluids like blood. The normal pH of arterial plasma is 7.4, and homeostasis involves regulation of pH in extracellular fluids by various mechanisms including buffers, the respiratory system, and kidneys. Disruptions to acid-base balance can have serious physiological consequences.
1. pH is a measure of acidity or alkalinity and is defined as the logarithm of the reciprocal of hydrogen ion concentration. Two disturbances of pH are acidosis and alkalosis.
2. The document discusses various factors that regulate acid-base balance in the body including buffers like bicarbonate, proteins, and phosphates. It also describes how the respiratory and renal systems help control pH levels.
3. Acid-base imbalances can result from respiratory or metabolic causes and lead to acidosis or alkalosis depending on increases or decreases in acid and base levels. Precise regulation is vital as pH outside a narrow range can be fatal.
Letter to MREC - application to conduct studyAzreen Aj
Application to conduct study on research title 'Awareness and knowledge of oral cancer and precancer among dental outpatient in Klinik Pergigian Merlimau, Melaka'
essential details on maintenance of extracellular fluid pH, Especially Blood for normal physiological function of the body and condition associated wit acid base imbalance
This document discusses acid-base balance and disorders. It defines acids and bases according to early definitions based on taste and litmus paper reactions, and the modern Brønsted-Lowry definitions involving proton donation and acceptance. pH is introduced as a measure of acidity, and how body regulates pH through buffering, respiration, and renal mechanisms is described. Finally, classifications of acid-base disorders by pH and cause are outlined.
The document discusses acid-base balance and homeostasis in the human body. It covers three main mechanisms for maintaining pH levels:
1) Buffer systems like carbonic acid-bicarbonate and proteins which temporarily bind excess hydrogen ions.
2) Exhalation of carbon dioxide through breathing, which reduces carbonic acid levels and raises blood pH within minutes.
3) Kidney excretion of hydrogen ions in urine over longer periods, which is needed to eliminate non-volatile acids produced by metabolism. Together these mechanisms tightly regulate pH through feedback loops and keep levels appropriate for cellular functions.
1. The pH scale ranges from 0 to 14 and indicates the concentration of hydrogen ions (H+) in a solution, with lower numbers representing higher acidity and higher numbers representing higher alkalinity.
2. Buffers help maintain pH when small amounts of acid or base are added. Common buffer systems include carbonic acid/bicarbonate in blood and weak acids/bases and their conjugates.
3. Redox potential is a quantitative measure of the tendency of a chemical species to acquire or lose electrons during a redox reaction. It can be calculated using Nernst's or Peter's equation and indicates the strength of oxidizing or reducing agents.
The document discusses acid-base balance and buffer systems in the body. It explains that acids are hydrogen ion donors and bases are hydrogen ion acceptors. Buffers stabilize pH by donating or accepting hydrogen ions. The main buffer systems in the body are bicarbonate, proteins, and phosphates. The bicarbonate buffer system uses bicarbonate and carbonic acid to maintain pH. The Henderson-Hasselbalch equation is used to calculate pH based on bicarbonate and carbon dioxide levels. Kidneys help regulate pH by excreting hydrogen ions and reabsorbing bicarbonate. Metabolic acidosis occurs when bicarbonate levels drop, while metabolic alkalosis occurs when b
This patient appears to be in hemorrhagic shock from his injuries sustained in the motor vehicle crash. His thready pulse and low blood pressure indicate he has lost a significant amount of blood and is hypovolemic. Immediate treatment should focus on resuscitation with intravenous fluids and blood products to restore circulating volume and improve end organ perfusion. His condition requires prompt intervention to prevent further hemodynamic instability and potential organ dysfunction or failure.
This document provides a summary of acid-base physiology, including:
1) Homeostatic mechanisms that regulate acid-base balance, including chemical buffers, respiratory regulation, and renal regulation.
2) Definitions of acids, bases, and the pH scale. Acidosis and alkalosis can arise from excess or deficits of volatile or fixed acids.
3) Key concepts in acid-base regulation including the Henderson-Hasselbalch equation and analyzing arterial blood gases.
Buffers in the body resist changes in pH and maintain it within a narrow range. The major buffer systems are bicarbonate, phosphate, and proteins. Bicarbonate buffers work by absorbing excess hydrogen ions in the blood and tissues. The kidneys and lungs work together to control bicarbonate and carbon dioxide levels to regulate pH. When an acid is added, buffers prevent a large change in pH by neutralizing the hydrogen ions.
This document defines key terms related to acid-base homeostasis, including acids, bases, pH, buffers, and the mechanisms that regulate hydrogen ion concentration in the blood. It discusses how the major buffer systems, especially the bicarbonate-carbonic acid system, help maintain acid-base balance. Respiration and the kidneys work together to remove acids produced during metabolism and regulate the excretion of non-volatile acids and bicarbonate.
This document discusses acid-base balance and buffers. It defines pH and describes strong and weak acids and bases. The key physiological buffers - bicarbonate, phosphate, hemoglobin and proteins/amino acids - are explained in terms of how they maintain blood pH during the addition of acids or bases. The document also covers acid-base imbalance disorders like acidosis and alkalosis, their causes and compensation mechanisms. Arterial blood gases are described as a way to diagnose acid-base disorders. An example case of metabolic acidosis in an infant with diarrhea is analyzed.
The document defines key terms related to acid-base balance including acids, bases, pH, buffers, and acidosis and alkalosis. It then discusses the major blood buffer systems that help regulate pH, including the protein, hemoglobin, phosphate, and bicarbonate-carbonic acid systems. The bicarbonate-carbonic acid system functions through the reversible reaction of carbon dioxide and water to form carbonic acid which dissociates into bicarbonate and hydrogen ions. The document also covers respiratory and renal compensation mechanisms that help return pH to normal levels in response to acid-base imbalances through lung and kidney functions.
The document defines key terms related to acid-base balance such as acids, bases, pH, buffers, and acidosis and alkalosis. It describes the four major blood buffer systems - protein, hemoglobin, phosphate, and bicarbonate/carbonic acid. The relationship between pH, bicarbonate, and carbonic acid is explained using the Henderson-Hasselbalch equation. The roles of the lungs and kidneys in regulating pH through respiratory and renal compensation are discussed. The document outlines the characteristics of uncompensated, partially compensated, compensated, and mixed acid-base imbalances.
1. The human body maintains electrolyte and acid-base balance through various mechanisms. Electrolytes like sodium, potassium, chloride, and bicarbonate are regulated in extracellular and intracellular fluids.
2. The body maintains blood pH around 7.4 through three lines of defense - blood buffers, respiratory system, and renal system. The major blood buffer is bicarbonate, which works with carbonic acid. The lungs regulate carbonic acid levels through breathing.
3. The kidneys regulate pH by excreting hydrogen ions, reabsorbing bicarbonate, and excreting titratable acids and ammonium ions. The kidneys play a key role in eliminating acids produced by the
This document discusses acids and bases in the body. It defines acids as hydrogen containing substances that dissociate to release H+ ions and bases as substances that accept H+ ions. The key physiological acids and bases are discussed including bicarbonate, phosphate, and proteins. The three main mechanisms that regulate blood pH - buffers, respiration, and the kidneys - are summarized. Respiration controls carbonic acid levels while the kidneys regulate bicarbonate reabsorption and acid excretion to maintain pH. Acid-base imbalances can cause metabolic acidosis or alkalosis and respiratory acidosis or alkalosis depending on primary disorder.
The document summarizes regulation of acid-base balance in the body. There are three primary systems that regulate hydrogen ion concentration: (1) buffer systems that release or bind hydrogen ions, (2) the respiratory center that controls exhalation of carbon dioxide, and (3) the kidneys which can excrete acidic or alkaline urine. The kidneys play a key role through secreting hydrogen ions, reabsorbing bicarbonate, and generating new bicarbonate through buffers like phosphate and ammonia. Together, these systems tightly control pH to prevent acidosis or alkalosis.
This document discusses acid-base balance and the mechanisms that regulate pH levels in the human body. It covers topics like buffers, respiratory regulation, and renal regulation of pH. The three main points are:
1) Buffers like bicarbonate help maintain pH levels by neutralizing excess hydrogen ions. The Henderson-Hasselbalch equation describes the buffering capacity of bicarbonate.
2) The respiratory system regulates pH rapidly through exhalation of carbon dioxide. Hemoglobin transports carbon dioxide as bicarbonate from tissues to the lungs.
3) The kidneys regulate pH over longer periods through reabsorption of bicarbonate, and excretion of fixed acids, ammonium
acid base balance postgraduate 2022-2023.pptxMichaelSaif
This document discusses acid-base balance and homeostasis. It notes that acid-base balance refers to keeping the concentration of hydrogen ions constant in body fluids like blood. The normal pH of arterial plasma is 7.4, and homeostasis involves regulation of pH in extracellular fluids by various mechanisms including buffers, the respiratory system, and kidneys. Disruptions to acid-base balance can have serious physiological consequences.
1. pH is a measure of acidity or alkalinity and is defined as the logarithm of the reciprocal of hydrogen ion concentration. Two disturbances of pH are acidosis and alkalosis.
2. The document discusses various factors that regulate acid-base balance in the body including buffers like bicarbonate, proteins, and phosphates. It also describes how the respiratory and renal systems help control pH levels.
3. Acid-base imbalances can result from respiratory or metabolic causes and lead to acidosis or alkalosis depending on increases or decreases in acid and base levels. Precise regulation is vital as pH outside a narrow range can be fatal.
Letter to MREC - application to conduct studyAzreen Aj
Application to conduct study on research title 'Awareness and knowledge of oral cancer and precancer among dental outpatient in Klinik Pergigian Merlimau, Melaka'
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Can Allopathy and Homeopathy Be Used Together in India.pdfDharma Homoeopathy
This article explores the potential for combining allopathy and homeopathy in India, examining the benefits, challenges, and the emerging field of integrative medicine.
At Apollo Hospital, Lucknow, U.P., we provide specialized care for children experiencing dehydration and other symptoms. We also offer NICU & PICU Ambulance Facility Services. Consult our expert today for the best pediatric emergency care.
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INFECTION OF THE BRAIN -ENCEPHALITIS ( PPT)blessyjannu21
Neurological system includes brain and spinal cord. It plays an important role in functioning of our body. Encephalitis is the inflammation of the brain. Causes include viral infections, infections from insect bites or an autoimmune reaction that affects the brain. It can be life-threatening or cause long-term complications. Treatment varies, but most people require hospitalization so they can receive intensive treatment, including life support.
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardso...rightmanforbloodline
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
Feeding plate for a newborn with Cleft Palate.pptxSatvikaPrasad
A feeding plate is a prosthetic device used for newborns with a cleft palate to assist in feeding and improve nutrition intake. From a prosthodontic perspective, this plate acts as a barrier between the oral and nasal cavities, facilitating effective sucking and swallowing by providing a more normal anatomical structure. It helps to prevent milk from entering the nasal passage, thereby reducing the risk of aspiration and enhancing the infant's ability to feed efficiently. The feeding plate also aids in the development of the oral muscles and can contribute to better growth and weight gain. Its custom fabrication and proper fitting by a prosthodontist are crucial for ensuring comfort and functionality, as well as for minimizing potential complications. Early intervention with a feeding plate can significantly improve the quality of life for both the infant and the parents.
Can coffee help me lose weight? Yes, 25,422 users in the USA use it for that ...nirahealhty
The South Beach Coffee Java Diet is a variation of the popular South Beach Diet, which was developed by cardiologist Dr. Arthur Agatston. The original South Beach Diet focuses on consuming lean proteins, healthy fats, and low-glycemic index carbohydrates. The South Beach Coffee Java Diet adds the element of coffee, specifically caffeine, to enhance weight loss and improve energy levels.
Can coffee help me lose weight? Yes, 25,422 users in the USA use it for that ...
ACID_BASE_BALANCE_MECHANISMS.pptx
1. ACID BASE BALANCE AND pH
Dr Neha Rani Verma
Assistant professor
Dept. of Biochemistry
2. Definition
Acids are substances that are capable of
donating protons and
Acids are proton donors
Examples:
HA H
+
+ A
–
HCl H
+
+ Cl
–
H2CO3 H
+
+ HCO3
–
pH <7
Bases are those that accept protons.
Bases are proton acceptors
Examples:
NH3 + H
+
NH
+
4
HCO3
–
+H
+
H2CO3
pH > 7
3. pH= Negative logarithm of hydrogen ion concentration.
Normal value 7.4 (range 7.38 -7.42)
The pH value is inversely proportional to the acidity.
Lower the pH, higher the acidity or hydrogen ion concentration.
Strong acids- Acids which ionize completely; e.g. HCl
HCl = H+ + Cl–- (Complete)
Weak acids- Acids which ionize incompletely e.g. H2CO3
H2CO3 = H
+
+ HCO3
–-
(Partial)
Buffers= Solutions minimize changes in pH
_1_
pH = –log [H+] = log [H+]
4. Dissociation Constant
Dissociation of an acid is a freely reversible reaction. At equilibrium the ratio between
dissociated and undissociated particle is a constant.
Dissociation constant (Ka) of an acid is
Ka = [H+] [A–-]
[HA]
pKa value =pH at which the acid is half ionized; Salt : Acid = 1:1
Strong acids will have a low pKa and weak acids have a higher pKa.
5. The relationship between pH, pKa, concentration of acid and
conjugate base (or salt) is expressed by the
Henderson-Hasselbalch equation,
[base] [salt]
pH = pKa + log ––––– or pH = pKa + log –––––
[acid] [acid]
When [base] = [acid]; then pH = pKa
Thus, when the acid is half ionized, pH and pKa have the same
values.
Practical
application in
clinical practice in
assessing the acid-
base status, and
predicting the
limits of the
compensation of
body buffers.
6. Buffers
Buffers are solutions which can resist changes in pH when acid or alkali is added.
Buffering capacity is the number of grams of strong acid or alkali which is necessary for a
change in pH of one unit of one liter of buffer solution
Buffers are of two types:
a. Mixtures of weak acids with their salt with a strong base or
b. Mixtures of weak bases with their salt with a strong acid.
Examples
i. H2CO3 / NaHCO3 (Bicarbonate buffer- carbonic acid and sodium bicarbonate)
ii. CH3COOH / CH3COO Na (Acetate buffer- acetic acid and sodium acetate)
iii. Na2HPO4 / NaH2PO4 (Phosphate buffer)
Factors affecting pH of a
buffer
1. pK
2. The ratio of salt to acid
concentrations
Factors affecting buffer
capacity
1. Actual concentration of salt
and acid
7. ACID BASE BALANCE
In normal life, the variation of plasma pH is very small.
The pH of plasma is maintained within a narrow range of 7.38 to 7.42.
The pH of the interstitial fluid is generally 0.5 units below that of the plasma.
During metabolism Volatile acids produced are carbonic acid, is eliminated as CO2 AND
Nonvolatile (fixed) acids produced are lactate, keto acids, sulfuric acid and phosphoric acid, are
buffered and excreted by the kidney.
Acidosis
If the pH is below 7.38
Acidosis leads to CNS depression
and coma.
Death occurs when pH is below
7.0.
Alkalosis
When the pH is more than 7.42
Alkalosis induces neuromuscular
hyperexcitability and tetany.
Death occurs when the pH is above
7.6.
8.
9. Bicarbonate buffer system
The most important buffer system in the plasma is the bicarbonate-carbonic acid system
(NaHCO3 / H2CO3). Reasons are:
Present in High concentration
Bicarbonate (HCO3
–), is regulated by the kidney (metabolic component).
carbonic acid (/ H2CO3), is under respiratory regulation (respiratory component).
fig. During acidosis reaction
follow red arrow while during
alkalosis reaction follows blue
arrow
10. Phosphate buffer system
The main elements of the phosphate buffer
system are HPO4 – – and H2PO4 – .
When a strong acid such as HCl is added to a
phosphate buffer system, the H+ is accepted
by the base HPO4 – – and converted to H2PO4
– and strong acid HCl is replaced by a weak
acid H2PO4 and decrease in pH is minimized.
When strong base, such as NaOH, is added to
the buffer system, the OH– is buffered by the
H2PO4 – to form HPO4 – – and water. Thus,
strong base NaOH is replaced by weak base
HPO4 – –, causing slight increase in the pH.
11. Protein buffer system
In the blood, plasma proteins especially albumin act as buffer because:
Proteins contain a large number of dissociable acidic (COOH) and basic (NH2) groups in
their structure.
In acid solution they act as a buffer in that, the basic amino group (NH2) takes up excess
H+ ions forming (NH3+).
In basic solutions the acidic COOH groups give up hydrogen ion forming OH– of alkali to
water.
Other important buffer groups of proteins, are the imidazole groups of histidine.
Each albumin molecule contains 16 histidine residues.
12. Haemoglobin Buffer
• Hemoglobin is the major intracellular buffer which is present in erythrocytes.
• It buffers carbonic acid (H2CO3) and its anhydride CO2 from the tissues.
In the tissues the CO2 formed by
metabolic processes diffuses into red
blood cell and is converted to carbonic
acid (H2CO3) by carbonic anhydrase
(CA). The H2CO3 thus formed ionizes
to form H+ and HCO3– and results in
decrease in blood pH.
• The deoxyhemoglobin (KHb) acts as
a buffer and accepts these H+ ions to
form HHb (weak acid). Thus, H+ ions
produced from H2CO3 does not
cause any change in pH
13.
14. Contd.
In the lungs deoxyhemoglobin (HHb)
carried from tissue is oxygenated to
oxyhemoglobin (HHbO2).
Since, oxyhemoglobin (HHbO2) is a
stronger acid results in the release of
H+, which is buffered by HCO3– to give
H2CO3.
This buffering effect reduces the pH
change as a result of the oxygenation of
HHb.
The carbonic acid formed is converted
quickly in the presence of the carbonic
anhydrase (CA) to carbon dioxide and
water which is eliminated by ventilation.
15. Respiratory Regulation of pH
Second line of defense against acid-bases
disturbances
An increase in (H+) or (H2CO3) stimulates the
respiratory center to increase the rate of
respiratory ventilation. When the ventilation
rate increases, more CO2 is released from the
blood and pH increases.
Similarly, an increase in (OH–) or (HCO3–)
depresses respiratory ventilation. A decrease
in ventilation rate will cause a decrease in
release of CO2 from the blood. The increased
blood CO2 will result in the formation of more
H2CO3. Thus, there will be decrease in pH
16. Renal Regulation of pH
Third line of defense in acid-base balance
Long-term acid-base control is exerted by renal mechanisms.
Kidney participates in the regulation of acid base balance primarily by
conservation of HCO3– (alkali reserve), which occur through four key
mechanisms-
17. Contd.
1. Exchange of H+ for Na+ of tubular
fluid.
2. Reabsorption (reclamation) of
bicarbonate from tubular fluid.
3. Formation of ammonia and excretion
of ammonium ion (NH4+) in the urine.
4. Excretion of H+ as H2PO4– in urine.
18. 1. Exchange of H+ for Na+ of tubular fluid.
In renal tubular cells, the carbonic
anhydrase catalyzes(CA) the
formation of carbonic acid (H2CO3)
from CO2 and water. The carbonic
acid, thus formed dissociates to yield
H+ and HCO3–.
The H+ ions formed in tubular cells
are secreted into the tubular fluid in
exchange for Na+ present in tubular
fluid.
The bicarbonate anion formed by the
dissociation of H2CO3 in the tubular
cell diffuses into the blood as the
accompanying ion to Na+ and
HCO3– is thus conserved and
increases the 'alkali reserve' of the
body.
19. 2. Reabsorption (reclamation) of bicarbonate
from tubular fluid.
Some H+ that are secreted into the
tubular fluid in exchange of Na+ react
with HCO3– in the tubular fluid to form
H2CO3, which is dehydrated to CO2
and H2O by an enzyme carbonic
anhydrase.
The increase in CO2 in tubular fluid
causes carbon dioxide to diffuse into
the tubular cell where it react with
H2O to form H2CO3 and
subsequently, H+ and HCO3–.
The process of bicarbonate
reabsorption is enhanced in states of
acidosis and decreased in alkalosis.
20. 3. Formation of ammonia and excretion of ammonium
ion (NH4+) in the urine.
Ammonia (the urinary buffer) is produced by
deamination of glutamine in renal tubular cell.
Glutaminase catalyzes this reaction.
Ammonia is a gas and diffuses readily across
the cell membrane into the tubular lumen,
where it buffers hydrogen ions to form
ammonium (NH4+) ions.
The NH4+ ions formed in the tubular lumen
cannot diffuse back into tubular cells and
thus, is trapped in the tubular urine and
excreted with anions, such as phosphate,
chloride or sulphate.
The removal of hydrogen ions as NH4+
decreases the requirement of bicarbonate to
buffer the urine.
21. 4. Excretion of H+ as H2PO4– in urine.
The hydrogen ions secreted into the
tubular fluid in exchange of Na+ are
buffered by HPO4– – of phosphate
buffer.
HPO4– – combines with the secreted
H+ and is converted to H2PO4– and
are excreted in the urine as
NaH2PO4