Tubular Reabsorotion And Secretion

Question 1

Makes largest contribution for Reabsorption

Answer 1

PCT

Question 2

The transfer of material from blood and tubule cells into filtrate

Answer 2

Secretion

Question 3

Two important out comes from secretion

Answer 3

Secretion of H ions help control blood pH

Secretion of other items help eliminate them from the body

Question 4

The top of soda cans

Answer 4

Apical

Question 5

Bottom and sides of soda cans

Answer 5

Basolateral

Question 6

Apical membrane contacts what type of fluid

Answer 6

Tubular fluid

Question 7

Basolateral membrane contacts what type of fluid

Answer 7

Interstitial

Question 8

Two types of Reabsorption routes

Answer 8

Paracellular

Transcellular

Question 9

Water and solutes return to blood stream by moving between tubule cells

Answer 9

Paracellular

Question 10

Water and solutes in tubular fluid pass through a tubule cell to return to blood stream

Answer 10

Transcellular

Question 11

Function of tight junctions in tubule cells

Answer 11

Allows solutes to diffuse across them to return to peri tubular capillary

Question 12

Why does renal tubules have a low concentration of Sodium ions in their cytosol

Answer 12

Na/K pump

Question 13

Where are Na-K pumps located in the renal tubule cells?

Answer 13

The Basolateral portion

Question 14

Lack of Na/K pump in the apical surface ensures what

Answer 14

Reabsorption of Na is one way process

Question 15

Primary active transport

Answer 15

ATP is used to pump a substance across a membrane

Question 16

Secondary active transport

Answer 16

Energy stored in an ions electrochemical gradient drives substance across a membrane

Question 17

Membrane proteins that move two or more substances in the same direction across a membrane

Answer 17

Symporters

Question 18

Move two or more substances in opposite direction across a membrane

Answer 18

Anti porters

Question 19

The upper limit on how fast a transporter can work

Answer 19

Transport maximum

Question 20

Obligatory water Reabsorption

Answer 20

Water is obliged to follow the solutes that are absorbed

Question 21

Facultative water Reabsorption

Answer 21

The last 10 percent of water Reabsorption that may be needed

Question 22

Regulates facultative water Reabsorption

Answer 22

ADH

Question 23

Most solute Reabsorption in the PCT involves this ion

Answer 23

Na

Question 24

How does sodium transport occur in the PCT

Answer 24

Symport

Antiport mechanisms

Question 25

Na glucose Symporters

Answer 25

Two Na ions One glucose Bind to the protein

Question 26

How does glucose molecules leave tubular cell

Answer 26

Diffusion

Question 27

When the glucose diffuses it heads to what in the interstitial fluid

Answer 27

Peri tubular capillaries.

Question 28

Na/H antiporters

Answer 28

H ions are secreted into lumen Na ions are Reabsorbed to bloodstream

Question 29

Role of carbonic anhydrase

Answer 29

Catalyze carbon dioxide and water to make carbonic acid

Question 30

What happens when a secreted H is secreted into tubule

Answer 30

It reacts with HCO3 to form carbonic acid

Question 31

Carbonic acid dissociates to form

Answer 31

Hydrogen and HCO3

Question 32

What Happens when HCO3 levels rise in cytosol

Answer 32

It is diffused back into the blood stream

Question 33

For every H ion secreted into tubular fluid

Answer 33

One HCO3 and one Na ion is Reabsorbed

Question 34

Solute Reabsorption of PCT promotes

Answer 34

Osmosis

Question 35

Aquaporin

Answer 35

Protein in plasma | Membrane that increase rate of water movement across the apical and Basolateral membrane

Question 36

Symporters of thick ascending limb of loop of henle

Answer 36

Na , K and two Cl

Question 37

Cells in thick ascending limb of the loop of henle allow for the simultaneous Reabsorption of

Answer 37

One K One Na Two Cl

Question 38

The distal convuluted tube allows for Reabsorption of

Answer 38

Na

Question 39

The DCT allows for secretion of

Answer 39

K

Question 40

How is Na Reabsorbed back to the blood stream of DCT

Answer 40

Na K pump

Question 41

The return of filtered water and solutes to the blood

Answer 41

Reabsorption

Question 42

what is secreted when blood volume and pressure drop

Answer 42

Renin

Question 43

what happens to the arterioles when blood volume and pressure drop

Answer 43

they are stretched less

Question 44

Renin clips off what from angiotensin

Answer 44

angiotensin I

Question 45

Converts angiotensin I to angiotensin II

Answer 45

ACE

Question 46

How does Angiotensin II affect renal physiology

Answer 46

decreases filtration enhances reabsorption of Na and Cl stimulates the release of aldosterone

Question 47

what is aldosterone

Answer 47

hormone released by adrenal cortex

Question 48

what is the purpose of aldesterone

Answer 48

Causes more reabsorption of Na and CL

Question 49

What is the purpose of more reabsorption of Na and Cl

Answer 49

more water is reabsorbed, allowing blood volume and pressure to increase.

Question 50

Releases ADH

Answer 50

Pituitary gland

Question 51

Purpose of ADH

Answer 51

Increases facultative reabsorption of water decreases osmolarity of bodily fluids

Question 52

What triggers ADH

Answer 52

High blood osmolarity decreased blood volume

Question 53

Promotes ANP

Answer 53

High blood volume

Question 54

Produces ANP

Answer 54

Stretching of atrium

Question 55

Purpose of ANP

Answer 55

Suppresses​ reabsorption of Na and water in PCT, decrease blood volume and pressure

Question 56

ANP inhibits

Answer 56

Aldosterone and ADH

Question 57

Promotes release of PTH

Answer 57

Decreased level of Calcium

Question 58

Releases PTH

Answer 58

Posterior Pituitary

Question 59

What does PTH do?

Answer 59

Causes reabsorption of Calcium