Urine formation 2

Question 1

Loop of Henle Descending loop:

Answer 1

*low permiability to ions
*HIGH permiability to water
*draws water out of filtrate and into the paratubular capillaries (REabsortion)

Question 2

Loop of Henle Ascending loop:

Answer 2

*low permiability for H20 and ions
*HIGH permiability to Na+
*Na+ gets ACTIVELY pumped in medulla
-further concentrates urine

Question 3

What is countercurrent multiplication?

Answer 3

when one side of the loop of Henle drives the concentratipn gradient of the other side

Question 4

The length of the loop matters! Dessert mammels have ___ loops
Sea mammels have ____ loops

Answer 4

Dessert mammels have LONG loop
Sea mammel have SHORT loop

Question 5

DCT

Answer 5

-where mineral and salts get reabsorbed
-waste products are ACTIVELY Secreted here

Question 6

The collecting duct is _______ _____ to H20

Answer 6

selectively permiable

Question 7

What is urination known as?

Answer 7

Microtation

Question 8

As bladder fills up, mechanoreceptors send APS to the ____ and ____

Answer 8

Pons and cerebrum

Question 9

when choice to urinate occurs, the ______ iniates motor nerve impulse to get the baldder to contract

Answer 9

PONS!!

Question 10

How does breathing affect PH?

Answer 10

*quick but small change
-rapid breathing results in more Co2 given off which INCREASED pH
-Slow breathing resukts in less Co2 given off which DECREASES pH

Question 11

How do the kidneys affect pH?

Answer 11

*excrete or absorb H+ and bicarobonate to adjust the pH through the DCT

Question 12

when blood pH is low the kidneys…

Answer 12

excrete H+ into the DCT and HCO3- gets reabsorbed into the blood

Question 13

when blood pH is high the kidneys…

Answer 13

excrete LESS H+ into DCT and less Na+ and HCO3 get reabsorbed in the blood