Schwann cell

A) Influence function of blood-brain barrier
B) Macrophages in CNS
C) Produce cerebrospinal fluid
D) Form myelin sheath around axons in CNS
E) Form myelin sheath around part of the axon in the PNS

Schwann Cell

A type of glial cell in the peripheral nervous system that wraps around nerve fibers, forming the myelin sheath, which helps in the rapid conduction of nerve impulses.

Myelin Sheath

The fatty layer that covers and insulates axons of many neurons, facilitating the rapid transmission of nerve impulses.

PNS

Abbreviation for Peripheral Nervous System, which encompasses all the nerves outside the brain and spinal cord and connects the CNS to the limbs and organs.