Topic 5- 4-Excretory System & Osmoregulation Flashcards
What is the waste product produced by the breakdown of Amino Acids
Urea
What system is responsible for producing storing and removing urine from our bodies
Urinary system
What does urine contain
It contains urea and any excess water
What is the function of the kidneys
To filter wastes such as urea and excess ions from the blood
What is the function of the ureter
Allows urine to pass from the kidneys to the bladder
What is the function of the bladder
Stores urine until it is voluntarily passed from the body, due to the relaxation of the sphincter muscles
What is the function of the urethra
The tube that connects the bladder to the exterior of the animal
In the kidneys what is the function of the renal artery
Supplying blood to the kidney from the left hand side of the heart
In the kidneys what is the function of the renal vein
Caring blood away from the kidney and back to the right hand side of the heart
In the kidneys what is the function of the cortex
To filter the blood
In the kidneys what is the function of the medulla
This is where the amount of salt and water in your urine is controlled
In the kidneys what is the function of the renal pelvis
This is where urine collects
How is water gained in the body
Intake of food & drink
Production of water by respiration
How is water lost in the body
When we exhale
When we sweat
Urine produced by the kidneys
Where is the receptor that detects changes in the blood water balance found
In the brain it is called the hypothalamus
What is the hormone called that regulates water balance and where is it produced
The hormone is called ADH (Anti Diuretic Hormone) and it it produced by the Pituitary Gland
What happens when water content is too high
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
What happens when the water content is too low
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
