Exam 2 – Lecture 19: Urinary 2

Question 1

Describe the proximal convoluted tubule

Answer 1

Cuboidal
Brush border (microvilli)
Contains tight junctions
Very active (mitochondria)
Basal striations
Responsible for modifying ultrafiltrate

Question 2

What happens as fluid passes through the Loop of Henle?

Answer 2

A lot of water is retained

Question 3

How can you determine where an animal lives based on the urinary system?

Answer 3

Its renal morphology

Desert living animals have a deep medulla

Question 4

What is the Loop of Henle lined by?

Answer 4

Some squamous, some cuboidal

Question 5

What is the permeability of Loop of Henle like?

Answer 5

Highly permeable

Question 6

What is found within the Loop of Henle?

Answer 6

Microvilli

Organelles

Question 7

What does the distal convoluted tubule do?

Answer 7

Save Na and HCO3

Clear K and NH4

Question 8

Describe the collecting tubules

Answer 8

Have light and dark cells
Single cilia
Variable microvilli

Question 9

What is the solute concentration like in Henle/collecting tubules?

Answer 9

High solute concentration

Question 10

What is the medulla primarily made of?

Answer 10

Loop of Henle

Question 11

What are vasa recta?

Answer 11

Specialized capillaries in the medulla

Question 12

When does fluid in the renal system become urine?

Answer 12

When it drops out of the medulla and into the renal pelvis

Question 13

How much of cardiac output does the renal artery get?

Answer 13

25%

Question 14

What is the location of renal arteries and veins?

Answer 14

Lateral to the aorta

Question 15

Why is renal infarct seen?

Answer 15

Because of the arcuate vessels being blocked

Question 16

What are the ureters, bladder, and urethra lined by?

Answer 16

Transitional epithelium