excretion

Question 1

what does urine contain?

Answer 1

water, urea and ions

Question 2

what is ADH?

Answer 2

a hormone

Question 3

where is ADH made?

Answer 3

in the brain

Question 4

how does ADH travel?

Answer 4

it travels to the kidneys through the blood

Question 5

what is volume of urine produced controlled by?

Answer 5

the collecting duct

Question 6

what is the permeability of the walls of the collecting duct controlled by?

Answer 6

ADH

Question 7

where is blood filtered under pressure?

Answer 7

bowman’s capsule

Question 8

what are forced out of capillaries into the nephron?

Answer 8

liquid and small molecules

Question 9

what are reabsorbed back into the blood?

Answer 9

glucose and amino acids

Question 10

why is glucose reabsorbed back into the blood?

Answer 10

it is needed for respiration

Question 11

why are amino acids reabsorbed back into the blood?

Answer 11

they are needed for growth and repair

Question 12

where does the reabsorption take place?

Answer 12

the proximal convoluted tubule

Question 13

what is a glomerulus?

Answer 13

a tangle of blood vessels in the bowman’s capsule

Question 14

what is the liquid forced out of the blood?

Answer 14

glomerular filtrate

Question 15

how is glomerular filtrate forced out?

Answer 15

ultrafiltration

Question 16

what is in glomerular filtrate?

Answer 16

water, glucose, amino acids, urea, hormones and ions

Question 17

what is in urine at the end?

Answer 17

water, ions, urea

Question 18

what do the kidneys control?

Answer 18

water balance

Question 19

what do the kidneys remove from the blood?

Answer 19

waste urea

Question 20

what is excretion?

Answer 20

removal of waste products made inside cells of the body

Question 21

how is urea made?

Answer 21

from the breakdown of amino acids that the body can’t use

Question 22

where is urea made?

Answer 22

in the liver

Question 23

what is the word equations for urea?

Answer 23

amino acids - urea + carbohydrate