Topic 5- 4-Excretory System & Osmoregulation

Question 1

What is the waste product produced by the breakdown of Amino Acids

Answer 1

Urea

Question 2

What system is responsible for producing storing and removing urine from our bodies

Answer 2

Urinary system

Question 3

What does urine contain

Answer 3

It contains urea and any excess water

Question 4

What is the function of the kidneys

Answer 4

To filter wastes such as urea and excess ions from the blood

Question 5

What is the function of the ureter

Answer 5

Allows urine to pass from the kidneys to the bladder

Question 6

What is the function of the bladder

Answer 6

Stores urine until it is voluntarily passed from the body, due to the relaxation of the sphincter muscles

Question 7

What is the function of the urethra

Answer 7

The tube that connects the bladder to the exterior of the animal

Question 8

In the kidneys what is the function of the renal artery

Answer 8

Supplying blood to the kidney from the left hand side of the heart

Question 9

In the kidneys what is the function of the renal vein

Answer 9

Caring blood away from the kidney and back to the right hand side of the heart

Question 10

In the kidneys what is the function of the cortex

Answer 10

To filter the blood

Question 11

In the kidneys what is the function of the medulla

Answer 11

This is where the amount of salt and water in your urine is controlled

Question 12

In the kidneys what is the function of the renal pelvis

Answer 12

This is where urine collects

Question 13

How is water gained in the body

Answer 13

Intake of food & drink

Production of water by respiration

Question 14

How is water lost in the body

Answer 14

When we exhale
When we sweat
Urine produced by the kidneys

Question 15

Where is the receptor that detects changes in the blood water balance found

Answer 15

In the brain it is called the hypothalamus

Question 16

What is the hormone called that regulates water balance and where is it produced

Answer 16

The hormone is called ADH (Anti Diuretic Hormone) and it it produced by the Pituitary Gland

Question 17

What happens when water content is too high

Answer 17

The brain detects the increase in water concentration and produces less ADH, this causes the kidneys to reabsorb a low volume or water. Due to this a large volume of dilute urine is expelled, and the water content returns to normal levels

Question 18

What happens when the water content is too low

Answer 18

The brain detects the decrease in water concentration and produces more ADH, this causes the kidneys to reabsorb a large volume or water. Due to this a small volume of concentrated urine is expelled, and the water content returns to normal levels