The cardiovascular system consists of a network of vessels that circulate blood throughout the body, powered by the heart. Blood flows from the heart through arteries, then smaller arterioles and capillaries where nutrients and oxygen are exchanged, then into venules and veins which return deoxygenated blood back to the heart. The circulatory system is divided into pulmonary circulation from the heart to the lungs to oxygenate blood and systemic circulation from the heart to the rest of the body to deliver oxygenated blood.
The Cardiovascular System Essay
The Circulatory System
The Circulatory System Essay
Circulatory System Essay
The Circulatory System Essays
Circulatory System
The Circulatory System
The Circulatory System
The Cardiovascular System Essay
Human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart. Two circuits, the pulmonary and the systemic, consist of arterial, capillary, and venous components.
The primary function of the heart is to serve as a muscular pump propelling blood into and through vessels to and from all parts of the body. The arteries, which receive this blood at high pressure and velocity and conduct it throughout the body, have thick walls that are composed of elastic fibrous tissue and muscle cells. The arterial tree—the branching system of arteries—terminates in short, narrow, muscular vessels called arterioles, from which blood enters simple endothelial tubes (i.e., tubes formed of endothelial, or lining, cells) known as capillaries. These thin, microscopic capillaries are permeable to vital cellular nutrients and waste products that they receive and distribute. From the capillaries, the blood, now depleted of oxygen and burdened with waste products, moving more slowly and under low pressure, enters small vessels called venules that converge to form veins, ultimately guiding the blood on its way back to the heart.
The Cardiovascular System Essay
The Circulatory System
The Circulatory System Essay
Circulatory System Essay
The Circulatory System Essays
Circulatory System
The Circulatory System
The Circulatory System
The Cardiovascular System Essay
Human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart. Two circuits, the pulmonary and the systemic, consist of arterial, capillary, and venous components.
The primary function of the heart is to serve as a muscular pump propelling blood into and through vessels to and from all parts of the body. The arteries, which receive this blood at high pressure and velocity and conduct it throughout the body, have thick walls that are composed of elastic fibrous tissue and muscle cells. The arterial tree—the branching system of arteries—terminates in short, narrow, muscular vessels called arterioles, from which blood enters simple endothelial tubes (i.e., tubes formed of endothelial, or lining, cells) known as capillaries. These thin, microscopic capillaries are permeable to vital cellular nutrients and waste products that they receive and distribute. From the capillaries, the blood, now depleted of oxygen and burdened with waste products, moving more slowly and under low pressure, enters small vessels called venules that converge to form veins, ultimately guiding the blood on its way back to the heart.
IT WILL BE HELPFUL FOR IRREGULAR STUDENTS LIKE ME. YOU MAY COPY AND PASTE IT.
The circulatory system is an organ system that permits blood and lymph circulation to transport nutrients, oxygen, carbon dioxide, hormones, blood cells, etc. to and from cells in the body to nourish it and help to fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood, and the lymphatic system, which returns excess filtered blood plasma from the interstitial fluid (between cells) as lymph. While humans, as well as other vertebrates, have a closed cardiovascular system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open cardiovascular system. The more primitive, diploblastic animal phyla lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood.
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.
Describe the difference between a. The pulmonary and systemic circula.pdfcalderoncasto9163
Describe the difference between a. The pulmonary and systemic circulation b. An artery and a
vein c. An atrium and a ventricle
Solution
a. Pulmonary and systemic circulation
The cardiovascular system comprise of two circulatory pathsways namely pulmonary and
sytemic circulation.The pulmonary circulation circuits through the lungs carrying the oxygenated
blood whereas the systemic circulation circuit through the rest of the body to provide oxygenated
blood to various body parts.
In the pulmonary circulation, blood travels through capillaries on the alveoli, air sacs in the lungs
allowing the gas exchange. Here, as blood flows, the size of the vessel decreases from artery to
arteriole, from vein to venuleand finally to capillaries,which serve as vessels for gas and nutrient
exchange.In the systemic circulation,the movement of blood takes place from the heart through
the body providing oxygen and nutrients to the tissues of the body while bringing back the
deoxygenated to the heart. Systemic and pulmonary circulation transition to the opposite to each
other. Systemic circulation is a much larger and higher pressure system than pulmonary
circulation.
Thus systemic circulation is the larger path that blood takes on, routing oxygenated blood around
the tissues of the body and deoxygenated blood from them back to the heart , while pulmonary
circulation is the smaller loop that blood takes in the lungs.
b. An artery and a Vein
Blood is circulated in the body through arteries, veins and capillaries in a closed circulatory
system.
All blood vessels leading from heart carrying oxygenated blood (except pulmonary artery) to
various organs of the body are called as arteries.
Whereas, vessels which carry deoxygenated blood (except pulmonary vein) from various organs
of the body to the heart are called as veins.
Arteries have thick elastic muscular walls and valves are absent, whereas, Veins have thin non-
elastic valves and valves are present to prevent bacl flow of blood.
c. An atrium and a Ventricle
There are 4 chambers in the heart; the atria refer to the upper chambers while the ventricles refer
to the lower chambers.
Atria (atrium) refers to the upper chambers of the heart that receive the impure blood from the
veins to send it to the ventricles.
Ventricles are small cavities or chambers that are present within the left chamber of the heart that
accepts blood from the arteries (left atrium) and then contracts to force into the aorta. Both right
and the left part of our heart has an atrium and one ventricle.
The walls of the ventricles are thicker, while that of the atria are thinner. They ventricles contain
valves to pump the blood in and out of the heart..
IT WILL BE HELPFUL FOR IRREGULAR STUDENTS LIKE ME. YOU MAY COPY AND PASTE IT.
The circulatory system is an organ system that permits blood and lymph circulation to transport nutrients, oxygen, carbon dioxide, hormones, blood cells, etc. to and from cells in the body to nourish it and help to fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood, and the lymphatic system, which returns excess filtered blood plasma from the interstitial fluid (between cells) as lymph. While humans, as well as other vertebrates, have a closed cardiovascular system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open cardiovascular system. The more primitive, diploblastic animal phyla lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood.
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.
Describe the difference between a. The pulmonary and systemic circula.pdfcalderoncasto9163
Describe the difference between a. The pulmonary and systemic circulation b. An artery and a
vein c. An atrium and a ventricle
Solution
a. Pulmonary and systemic circulation
The cardiovascular system comprise of two circulatory pathsways namely pulmonary and
sytemic circulation.The pulmonary circulation circuits through the lungs carrying the oxygenated
blood whereas the systemic circulation circuit through the rest of the body to provide oxygenated
blood to various body parts.
In the pulmonary circulation, blood travels through capillaries on the alveoli, air sacs in the lungs
allowing the gas exchange. Here, as blood flows, the size of the vessel decreases from artery to
arteriole, from vein to venuleand finally to capillaries,which serve as vessels for gas and nutrient
exchange.In the systemic circulation,the movement of blood takes place from the heart through
the body providing oxygen and nutrients to the tissues of the body while bringing back the
deoxygenated to the heart. Systemic and pulmonary circulation transition to the opposite to each
other. Systemic circulation is a much larger and higher pressure system than pulmonary
circulation.
Thus systemic circulation is the larger path that blood takes on, routing oxygenated blood around
the tissues of the body and deoxygenated blood from them back to the heart , while pulmonary
circulation is the smaller loop that blood takes in the lungs.
b. An artery and a Vein
Blood is circulated in the body through arteries, veins and capillaries in a closed circulatory
system.
All blood vessels leading from heart carrying oxygenated blood (except pulmonary artery) to
various organs of the body are called as arteries.
Whereas, vessels which carry deoxygenated blood (except pulmonary vein) from various organs
of the body to the heart are called as veins.
Arteries have thick elastic muscular walls and valves are absent, whereas, Veins have thin non-
elastic valves and valves are present to prevent bacl flow of blood.
c. An atrium and a Ventricle
There are 4 chambers in the heart; the atria refer to the upper chambers while the ventricles refer
to the lower chambers.
Atria (atrium) refers to the upper chambers of the heart that receive the impure blood from the
veins to send it to the ventricles.
Ventricles are small cavities or chambers that are present within the left chamber of the heart that
accepts blood from the arteries (left atrium) and then contracts to force into the aorta. Both right
and the left part of our heart has an atrium and one ventricle.
The walls of the ventricles are thicker, while that of the atria are thinner. They ventricles contain
valves to pump the blood in and out of the heart..
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
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A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
2. What is the
cardiovascular
system?
The cardiovascular system consists of a network of
vessels that circulates blood throughout the body,
motored by the action of the heart. We’ll be talking
about specifics of the heart in a separate lesson, so
will concentrate here on the circulatory system.
3. Tracing the flow of
blood…pulmonary circulation
The inferior vena cava is
the largest vein of the body.
It carries de-oxygenated
blood back from the lower
part of the body to the right
atrium of the heart. This
blood is carrying carbon
dioxide.
The superior vena cava is above the heart and
carries de-oxygenated blood from the head and
arms to the right atrium of the heart.
4. Tracing the flow of
blood…pulmonary circulation
From the right
atrium, the blood
flows through the
tricuspid valve to
the right ventricle
and then onto the
lungs through the
pulmonary valve
and pulmonary
artery.
5. In the lungs, the blood exchanges the carbon
dioxide it is carrying for oxygen.
Tracing the flow of
blood…pulmonary circulation
6. Tracing the flow of
blood…pulmonary circulation
The fully oxygenated
blood now flows
BACK to the left
atrium of the heart
through the
pulmonary veins.
7. Tracing the flow of
blood…systemic circulation
The oxygenated
blood leaves the
left atrium through
the mitral
(bicuspid) valve
into the left
ventricle, gets
pumped from the
left ventricle
through the aortic
valve to the aorta.
8. Tracing the flow of
blood…systemic circulation
The aorta is the
largest artery of the
body. The
ascending aorta
leaves the heart,
curves in an
inverted ‘U’ shape
making an arch,
and then descends
downward.
9. Tracing the flow of
blood…systemic circulation
At the arch of the aorta, 3
branches extend upward…
1. The brachiocephalic
artery (or innominate
artery) quickly divides into
the right subclavian artery
that supplies blood to the
right arm and upper torso
AND the right common
carotid artery that supplies
the head and neck.
10. Tracing the flow of
blood…systemic circulation
At the arch of the aorta, 3
branches extend upward…
2. The left common carotid
artery supplies the head
and neck.
3. The left subclavian
artery supplies the left
arm and upper torso.
‘Subclavian’ means it is
located below the
clavicle… or collarbone.
11. Tracing the flow of blood…systemic
circulation
The descending aortic
artery leads downward
through the diaphragm
and chest…and into the
abdomen. About 1/5 to 1/3
of the blood passes
through the renal artery
into the kidney. The
kidney is a filter, and takes
some water and waste
products out of the blood.
The kidneys excrete the waste products and
water out of the body as urine.
12. Tracing the flow of
blood…systemic circulation
The descending
aortic artery
continues downward
into the abdomen. It
then splits into two
major branches. This
split is called the
aortic bifurcation;
the two branches are
called iliac arteries.
13. Tracing the flow of
blood…systemic circulation
The left iliac
artery supplies
blood to the left
pelvis and leg;
the right iliac
artery supplies
blood to the right
pelvis and leg.
The iliac artery continues down
into the leg as the femoral artery
and its branches.
14. Tracing the flow of
blood… the arteries
Arteries are elastic tubes that carry
blood in pulsating waves. The blood
exerts pressure against the walls of
the arteries as it passes through. The
peak pressure occurs during the
heart’s contraction, and is called
systolic pressure. The minimum
pressure occurs between
contractions when the heart expands
and refills, and is called diastolic
pressure. This pressure variation
within the artery produces a pulse.
All arteries have a pulse.
15. Tracing the flow of blood… the
arteries
Common pulse sites used to
check circulation are:
1. TEMPORAL (TEM por ul) - side of
forehead
2 & 3. CAROTID (kuh RAH did) - neck
4. BRACHIAL (BRAY kee ul) - inside
the elbow
5. RADIAL - thumb side of wrist
6. FEMORAL (FEM er all) - groin
7. POPLITEAL (pah plah TEE ul) -
behind the knee
8 & 9. DORSALIS PEDIS (dor SAL us
PED iss) - upper surface of foot
16. Tracing the flow of blood… the
arteries
Count the number of beats for
15 seconds x 4 = pulsations per minute.
The average
pulse rate for a
person who is
‘resting’, would
be 70. During
exercise, that
number might
increase to
between 130
and 140 beats
per minute.
17. Systolic and diastolic
blood pressure can be
measured in the brachial
artery just above the
elbow with an instrument
called a
sphygmomanometer
(sfig mō mah MOM ah ter) and a
stethoscope. Two
measurements are taken,
and are expressed in
millimeters of mercury
(the chemical symbol for
mercury is Hg).
Tracing the flow of blood… the
arteries
The two blood
pressure
measurements are
written as a ratio…
systolic over diastolic.
18. In the average adult,
systolic pressure usually
ranges between 100 to
140 mm Hg. Diastolic
pressure usually ranges
between 60 to 90 mm Hg.
Tracing the flow of
blood… the arteries
A typical blood pressure
reading would be expressed as
120/80… 120 over 80. A reading
of 140/90 would be considered
‘high’ blood pressure, and may
pose health risks.
19. Arterioles act like adjustable
nozzles in the circulatory system,
so they have the greatest
influence over blood pressure.
Tracing the flow of blood… the
arterioles
The arteries
branch off
into even
smaller
vessels called
arterioles,
and then to
smaller
vessels yet
called
capillaries.
20. Tracing the flow of blood… the
capillaries
The capillaries are the
smallest of the blood
vessels, and the walls
are so thin that
molecules can pass
through them. They
branch out from the
arterioles, passing
next to the organs,
intestines, and
through all the
cellular tissue.
In the cellular tissue, the
capillaries provide the
means of exchange,
through the process of
absorption.
21. Tracing the flow of blood… the
capillaries
The capillaries
branching away
from the arteries in
the abdomen pass
by the liver and
intestines, picking
up nutrients and
water.
The capillaries in the cellular tissue exchange
their oxygen, nutrients, and water… and pick up
carbon dioxide and other wastes.
The capillaries
branching away
from the arteries in
the lungs absorb
oxygen.
22. Tracing the flow of blood… the
venules
The capillaries,
now carrying
carbon dioxide
and cell wastes,
start merging
into bigger vessels
called venules (VEEN
or VEN yoo als) The
venules widen
even further,
emptying into
veins.
23. The veins
have valves
that prevent
the backflow
of blood.
Veins lead
back to the
heart.
Tracing the flow of blood… the
veins
24. Veins are the vessels
that are used to
remove blood from
the body for analysis.
Tracing the flow of blood… the
veins
This procedure is called a
venipuncture (VEEN ah punk chur)
and the medical personnel
that specializes in this
procedure is called a
phlebotomist (flah BOTT ah mist).
25. The veins carry the
blood BACK toward the
heart. The blood still
carries a small amount
of oxygen along with
cellular waste, but has
fairly low pressure
compared to blood in
arteries. It finally travels
through the superior
and inferior vena cava,
and back into the right
atrium of the heart.
Tracing the flow of blood… the
veins
Circulation is complete, and starts over again.