excretory system

Question 1

how the system maintains homeostasis

Answer 1

remove metabollic wastes (water, salt, nitrogenous wastes)

Question 2

skin and associated glands (O.E.)

Answer 2

removes heat and salts

Question 3

lungs (O.E.)

Answer 3

remove carbon dioxide

Question 4

kidneys (O.E.)

Answer 4

excrete metabolic waste, regulate water/salt concentration and acid/base concentration

Question 5

liver (O.E.)

Answer 5

detoxifies drugs or alcohol
converts ammonia into urea
breaks down red blood cells

Question 6

kidneys

Answer 6

filter blood to produce urine

Question 7

ureters

Answer 7

carry urine from kidneys to urinary bladder

Question 8

urinary bladder

Answer 8

stores urine until excretion

Question 9

urethra

Answer 9

carries urine from bladder to outside

Question 10

renal artery

Answer 10

carries contaminated blood to kidneys

Question 11

renal vein

Answer 11

carries purified blood from kidneys to inferior vena cava for circulation

Question 12

renal cortex

Answer 12

outer part of the kidney, where blood is filtered

Question 13

medulla

Answer 13

middle part of the kidney, contains collecting ducts

Question 14

pelvis

Answer 14

inner cavity of kidney, where urine collects

Question 15

urea

Answer 15

formed in the kidney from breakdown of ammonia

Question 16

uric acid

Answer 16

formed from breakdown of nucleic acids (DNA/RNA)

Question 17

creatinine

Answer 17

formed in the muscles

Question 18

nephron

Answer 18

tiny filtering unit in the cortex/medulla of kidney

Question 19

glomerulus

Answer 19

tight ball of capillaries that filter

Question 20

Bowman’s capsule

Answer 20

double walled structure that surrounds the glomerulus

Question 21

proximal tubule

Answer 21

where filtrate exits the Bowman’s capsule

Question 22

loop of Henle

Answer 22

u-shaped loop where water can be secreted