Lecture 29

Question 1

2 types of nephrons

Answer 1

Cortical and juxtamedullary nephrons

Question 2

Where are cortical nephrons located?

Answer 2

Mainly in the cortex

Question 3

Where are juxtamedullary nephrons located?

Answer 3

Deep in the medulla

Question 4

What are nephrons comprised of?

Answer 4

• A glomerular capsule
• Renal tubules
• Collecting duct

Question 5

Glomerular capillaries are specialized for

Answer 5

Filtration

Question 6

Glomerular capillaries are…

Answer 6

Thin-walled, and have a single layer of fenestrated endothelial cells

Question 7

Peritubular capillaries

Answer 7

Specialized for absorption

Question 8

Peritubular capillaries wrap around _____

Answer 8

Renal tubules

Question 9

Peritubular capillaries receive filtered blood from the _______via _____arterioles

Answer 9

Glomerulus, efferent

Question 10

What are vasa recta

Answer 10

Extensions that follow loops of Henle deep into the medulla. Only found with juxtamedullary nephrons

Question 11

The glomerulus has two layers

Answer 11

1. Outer parietal layer of simple squamous cells

2. Inner visceral layer of podocytes

Question 12

Podocytes

Answer 12

Very branched form foot processes called pedicels.

Question 13

Proximal convoluted tubule

Answer 13

• Bulk reabsorption

- surrounded by peritubular capillaries

Question 14

Epithelium of DCT

Answer 14

Cuboidal epithelium but thinner than the PCT

Question 15

Structure of the DCT

Answer 15

• Few microvilli
• Few mitochondria
• Reabsorption influenced mainly by aldosterone

Question 16

The juxtaglomerular apparatus is located where the afferent arteriole sits alongside the _____

Answer 16

DCT

Question 17

One pyramid and all of the cortex that surrounds it is called a _______

Answer 17

Lobe

Question 18

Where is the renal corpuscle located?

Answer 18

The cortex