structure of excretory system

Question 1

renal arteries

Answer 1

branch of descending aorta
blood to kidneys

Question 2

ureter

Answer 2

waste filtered by blood is urine that’s transfers from from the kidney to the bladder

Question 3

urinary sphincter

Answer 3

valve like and permits storage of urine

Question 4

what happens when enough urine is collected in the urinary sphincter

Answer 4

sphincter relaxes -> urine enters urethra -> gets released from body

Question 5

nephrons

Answer 5

functional unit of kidney

Question 6

afferent artioles

Answer 6

supplies nephrons with blood

Question 7

what do afferent artioles branch from

Answer 7

renel artery

Question 8

what do afferent artioles branch into

Answer 8

capillary bed -> glomerulus for filteration

Question 9

where does the blood from glomerulus go to

Answer 9

efferent artioles -> net of capillary beds -> peritubular capillaries that wrap around kidney tubule

Question 10

where does blood leave nephron through

Answer 10

venule that joins renal vein

Question 11

glomerulus

Answer 11

helps filters waste products and excess water from blood

Question 12

glomerulus is surrounded by what

Answer 12

bowman’s capsule

Question 13

cortex contains

Answer 13

Afferent artiole, Efferent artiole, glomerulus

Question 14

fluid becoming urine enters where

Answer 14

bowman’s capsule from blood

Question 15

where does urine go after entering BC

Answer 15

proximal tube -> thin tubule -> loop if henle-> medulla of kidney urine -> distal tube -> collecting duct -> renal pelvis of kidney

Question 16

collecting duct

Answer 16

collects urine from many nephrons

Question 17

What moves from GL to BC

Answer 17

small molecules ex. water, NACL, amino acids, H+

Question 18

what is too big to move from GL to BC

Answer 18

plasma proteins, blood cells, platelets

Question 19

bowman’s capsule

Answer 19

catches good stuff that needs to be filtered out

Question 20

efferent artiole

Answer 20

blood vessel that carries blood away from glomerulus
helps maintain blood flow and pressure

Question 21

proximal tubule

Answer 21

reabsorbs important subtances to put back into bloodstream
ex. water, glucose, amino acids

Question 22

distal tubule

Answer 22

helps regulate balance of electrolytes

Question 23

peritubular capillaries

Answer 23

tiny blood vessels around P/D tubules
help exchange nutrients, waste products between tubules and blood

Question 24

loop of henle

Answer 24

reabsorbe water and sodium chloride