Neuroglia of the PNS

Question 1

What’s another name for neurolemmocytes?

Answer 1

Schwann cells

Question 2

What covers peripheral axons in two different ways and repairs after an injury?

Answer 2

Schwann cells

Question 3

What do myelinating Schwann cells form?

Answer 3

They form a sheath around peripheral axons.

Question 4

What is the outer surface of a Schwann cell called?

Answer 4

Its called a neurilemma

Question 5

What dies Schwann cells do?

Answer 5

It prevents contact from interstitial fluid.

Question 6

Describe how myelinating Schwann cells myelinates an axon.

Answer 6

Step 1- A Schwann cell surrounds a portion of the axon with a groove of its cytoplasm
Step 2- The Schwann cell then begins to rotate around the axon
Step 3- As the Schwann cell rotates, myelin is wound around the axon in multiple layers, forming a tightly packed membrane.

Question 7

What does nonmyelinating Schwann cell do?

Answer 7

It encloses segments of many unmyelinated axons. The axons then come to lie in separate membrane folds at the periphery of the cell.

Question 8

What do nonmyelinating Schwann cells stabilize and isolates?

Answer 8

Schwann cells stabilize the positions of the axons and isolate them from chemicals in the surrounding fluid.