Excretory System

Question 1

what are the 3 main job of the kidney?

Answer 1

1. filter out waste from blood
2. maintain proper condition
3. excrete hormone (renin, epo)

Question 2

ureter

Answer 2

tubes that drain out kidneys

Question 3

bladder

Answer 3

store waste temporarily

Question 4

urethra

Answer 4

where waste exits

Question 5

nephrons

Answer 5

filtering units

Question 6

urinary sphincter

Answer 6

controls urine output

Question 7

where does unfiltered blood enter from?

Answer 7

comes from inferior vena cava, enters nephron thru renal arteriole

Question 8

what happens at glomerulus?

Answer 8

thin walls, high BP, plasma is forces out of blood cell, only blood cell and large proteins remain

Question 9

bowmans capsule

Answer 9

captures plasma

Question 10

promixal tubule

Answer 10

90% of plasma reabsorbed
- glucose, ions, amino acids

Question 11

descending loop of henle

Answer 11

high aquaporins conc, where h2o is reabsorbed into blood stream

Question 12

ascending loop of henle

Answer 12

high ion channels, na+ are reabsorbed into blood stream

Question 13

distal tubule

Answer 13

remaining h2o/na reabsorbed
drug/toxins enter urine thru here

Question 14

collecting duct

Answer 14

final touches
MIGHT reabsorb h2o (adh)