The kidneys filter waste from the blood and regulate water and electrolyte balance. They remove urea, uric acid, and creatinine. The kidneys are supplied by blood from the renal arteries and drain into the ureters. They filter minerals, sugars, amino acids and waste from the blood and reabsorb useful substances while excreting waste like urea in the urine. Kidney failure requires dialysis or transplant to filter the blood.
A powerpoint on the Human Excretory System, intended for the SA Grade 11 Life Sciences Syllabus. Includes information on kidneys, osmoregulation, nephrons, excretion, etc. Hope it helps :)
Excretory Products and their Elimination Class XI Biology Chapter 19.
Based on NCERT Class XI Biology Text book content.
Includes flowcharts and illustrations.
A powerpoint on the Human Excretory System, intended for the SA Grade 11 Life Sciences Syllabus. Includes information on kidneys, osmoregulation, nephrons, excretion, etc. Hope it helps :)
Excretory Products and their Elimination Class XI Biology Chapter 19.
Based on NCERT Class XI Biology Text book content.
Includes flowcharts and illustrations.
The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body.
It is a powerpoint presentation that discusses about the lesson or topic: Respiratory System. It also talks about the definition, parts and the concepts about Respiratory System.
It has two videos which are not playing . If you want to add videos you can download it from the link given below.
For plants: http://www.youtube.com/watch?v=s44RQi_P7kQ
For animals: http://www.youtube.com/watch?v=EhnRhfFLyOg
The Human Blood Circulatory system
Humans and other vertebrates have a closed blood circulatory system:
This system consists of
the heart (pump),
series of blood vessels
the blood that flows through them.
This means that circulating blood is pumped through a system of vessels.
Functions of Human Blood Circulatory System
1. oxygen
2. carbon dioxide
3 nutrients
4. water
5. ions
6. hormones
7. antibodies
8. metabolic wastes
The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body.
It is a powerpoint presentation that discusses about the lesson or topic: Respiratory System. It also talks about the definition, parts and the concepts about Respiratory System.
It has two videos which are not playing . If you want to add videos you can download it from the link given below.
For plants: http://www.youtube.com/watch?v=s44RQi_P7kQ
For animals: http://www.youtube.com/watch?v=EhnRhfFLyOg
The Human Blood Circulatory system
Humans and other vertebrates have a closed blood circulatory system:
This system consists of
the heart (pump),
series of blood vessels
the blood that flows through them.
This means that circulating blood is pumped through a system of vessels.
Functions of Human Blood Circulatory System
1. oxygen
2. carbon dioxide
3 nutrients
4. water
5. ions
6. hormones
7. antibodies
8. metabolic wastes
The urinary system, components, the urine formation process, The gross structure of the kidney, Microscope structure of the kidney, Renin-Angiotensin Aldosterone System
The Excretory system is responsible for the elimination of wastes produced by homeostasis.
There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system. ... From there, urine is expelled through the urethra and out of the body.
This presentation provides a basic insight of Urine an important body fluid. This will help readers develop a basic concept about urine, its formation, urinalysis, composition, and all. It will help medical and biomedical students.
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The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
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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.
2. Chemical Processes in the
Use up
Body
Oxygen
Glucose
Amino Acids
Water
Nutrients
Water,
Produce Mineral salts,
Carbon dioxide Urea,
Water Carbon Dioxide,
Urea Heat
Heat
Toxic Chemicals
3. Excretory Organs in
Human
Urinary System Lungs Skin
Why waste products
must be excreted out of
the body???
Liver
9. Kidney Function
• Detoxify blood
• Increase calcium absorption
o calcitriol
• Stimulate RBC production
o erythropoietin
• Regulate blood pressure and electrolyte balance
o renin
10. Structure of the Urinary System
• Two
Kidneys
• Two
Ureters
• Bladder
• Urethra
16. Filtration system in the Kidney
Filtration
Mineral salts
Sugar
Amino Acids
Waste-Urea
Reabsorption
All Sugar
All amino acids
Mineral Salts
Water
17. Function of the Kidney
• Filter blood in order to remove
cellular waste products from the
body.
• Maintain chemical composition, pH
and water level
• At any given time, 20 % of blood is in
the kidneys. Humans can function
with one kidney.
• If one ceases to work, the other
increases in size to handle the
workload.
18. Cellular waste
• urea
o (a nitrogenous waste produced in the liver from the breakdown of
protein. It is the main component of urine)
• uric acid
o (usually produced from breakdown of DNA or RNA)
• creatinine
o (waste product of muscle action).
19. Composition of
Chemicals in the Body
Substance Blood in Kidney Urine
renal artery tubules
(filter
system)
Glucose 2.0 2.0 0
Mineral salts 10.0 10.0 17.0
Amino acids 0.9 0.9 0
Protein 88.0 0 0
Urea 0.5 20.0 20.0
RBC & WBC 47% 0% 0
22. Treatment of Kidney Failure
-Dialysis-
• ½ of patients with kidney disease
eventually require dialysis
• Diffuse harmful waste out of body
• Control BP
• Keep safe level of chemicals in body
• If dialysis cannot work, the patient has
to undergo kidney transplant
23. Hemodialysis
• 3-4 times a week
• Takes 2-4 hours
• Machine filters
blood and
returns it to
body