Excreatory System Review

Question 1

What is the main function of the excretory system?

Answer 1

The excretory system is responsible for the elimination of wastes produced by homeostasis

Question 2

List the organs associated with the excretory system and the substances that each excretes.

Answer 2

Lung, liver

Kidney, ureter, urinary bladder, urethra - urine, urea, excess water, sodium

Question 3

Draw and label the three parts of the kindney

Answer 3

From the inside first

Pelvis, medulla, cortex

Question 4

In biology, what words refers to the kidney?

Answer 4

Renal

Question 5

Approximately what size is one kidney and where in the human body are they located?

Answer 5

The size of your palm

Located near lower abdomen

Question 6

Do #6 on the review

Answer 6

Do #6 on the review

Question 7

Describe the pathway of the filtrate and blood thorough the kidney and the nephron and the specific substances associated along the pathway.

Answer 7

Renal artery - glomerulus -capillaries - renal vein = blood

Bowmans capsule - loop of Henley - collecting duct = filtrate

Question 8

Describe Filtration

Answer 8

A process in which the blood is filtered in the glomerulus so that the substances that are important can be retained and selectively reabsorbed by the body

Question 9

Describe Reabsorption

Answer 9

The process by which water and dissolved substances are put back into the blood

Question 10

Describe Excretion

Answer 10

The process by which these metabolic wastes are eliminated to maintain homeostasis

Question 11

Look at question number 9

Answer 11

Look at question number the on the review

Question 12

Define homeostasis

Answer 12

Means to maintain a balance in the body

Question 13

How does the urinary system maintain homeostasis?

Answer 13

• waste management
• regulates water and liquids in the blood
• regulates a pit

Question 14

What are the functions of the urinary system?

Answer 14

Their function is to remove liquid wastes from the blood in the form of urine and keep a stable balance of salts and other substances in the blood

Question 15

What is micturition?

Answer 15

Fancy science terminology for “urination”

Question 16

Describe the ureters?

Answer 16

• collapsible tubes that allow urine to flow though it

- valves to prevent backflow

Question 17

Describe the bladder?

Answer 17

• muscle sac for the temporary storage of urine
• has fold (reggae) different sizes
• can hold 500ml of liquid comfortably and a maximum of 1000ml in an adult

Question 18

Describe the urethra?

Answer 18

Short tube with an involuntary controlled sphincter leading urine out of the body

Question 19

Describe the colour, odour, and turbidity of normal urine

Answer 19

• Transparent or clear
• slightly aromatic
• light yellow to amber

Question 20

Blue urine

Answer 20

Consumed food with blue dye, such as frosting or candy

Question 21

Brown or black urine

Answer 21

Eating certain beans like fava beans causes darkening of the urine because of their dopamine content.

Question 22

Cloudy or white urine

Answer 22

Indicates a bacterial infection or sometimes in happens after sex

Question 23

Why might a healthcare professional take a urine sample?

Answer 23

Colour, odour, drugs

Question 24

Describe dialysis?

Answer 24

Usually ya use dialysis when your kidneys fail.

It removes water, salt, and extra water to prevent them from building up in the body.

Question 25

Describe kidney stones

Answer 25

Substances such as calcium, magnesium, or uric acid salts in the urine crystallize and form kidney stones.

Question 26

Where does a transplanted kidney get replaced?

Answer 26

The transplanted kidney gets placed into your lower abdomen.

Question 27

Describe ADH and how it controls kidney function

Answer 27

An anti-divertic hormone is released by the pituitary gland (in the brain) directly into the blood.
It cause kidneys to absorb water and excrete less urine

Question 28

What are the effects of excessive caffeine and/or alcohol consumption on kidney function.

Answer 28

It’s leads to less water being reabsorbed and more frequent urination.