Histology of the Kidney

Question 1

Why not actively select what molecules to filter, rather than filter everything and reabsorb later?

Answer 1

It’s good to have ‘default excretion,’ so unknown toxins are eliminated.

Question 2

Interlobular arteries branch off of the ______ arteries.

Answer 2

Arcuate

Question 3

Afferent arterioles branch off the _____ arteries

Answer 3

Interlobular

Question 4

T/F: The renal viscera has its own perfusing blood supply.

Answer 4

F. Unlike the lung, the kidneys get their oxygen and metabolic fuel through the blood upon which the act.

Question 5

The thin medullary portion of the Loop of Henle is composed of ____ epithelium.

Answer 5

Squamous

Question 6

Several collecting ducts join at the location of the ____

Answer 6

Renal papilla.

Question 7

How much glucose is reabsorbed in the proximal tubule?

Answer 7

All of it

Question 8

Why are nephrons arranged in parallel

Answer 8

So that we can create hypertonic urine.

Question 9

What is the major molecular filtration layer?

Answer 9

The basal lamina.

Question 10

The proximal tubule is composed of _____ cells

Answer 10

Cuboidal (They are also very full of mitochondria, and have microvilli)

Question 11

The Na/K ATPase in the proximal tubule functions to pull _____ out of the tubule lumen

Answer 11

Sodium

Question 12

The distal tubule is composed of ____ cells

Answer 12

Cuboidal (Smaller microvilli than proximal, fewer mitochondria)