Excretory System

Question 1

What is the functions of the urinary system?

Answer 1

1. excrete waste
2. regulate volume and chemical composition of fluids
3. conduct urine from kidneys
4. secrete erythropoietin

Question 2

Define: PCV

Answer 2

packed cell volume

Question 3

60% total body water… 40% dry matter. 60% can be divided into two types, what are they?

Answer 3

ECF (extracellular fluid) - 20%
ICF (intracellular fluid) - 40%

Question 4

Define: Hilum

Answer 4

exit and entry point for blood vessels and nerves.

Question 5

What blood supply, supplies the kidneys?

Answer 5

the renal arteries

Question 6

Explain the difference between osmosis and diffusion

Answer 6

Diffusion - movement of particles from high concentration to low.
Osmosis - movement of solution towards a high concentration of molecules.

Question 7

The nephron works because of….:

Answer 7

osmosis, diffusion, reabsorption and secretion

Question 8

What are the 5 key components of the nephron?

Answer 8

1. glomerulus
2. proximal convoluted tubule
3. loop of henle
4. distal convoluted tubule
5. collecting ducts

Question 9

Breakdown the word RAAS

Answer 9

renin-angiotensin-aldosterone system

Question 10

Define: hypotension

Answer 10

low blood pressure