Lecture on Neuroglia in the CNS

These flashcards cover key concepts related to neuroglia in the central nervous system (CNS), including types of glial cells and their functions.

What are the primary functions of astrocytes in the central nervous system (CNS)?

Astrocytes provide structural support, regulate blood flow, and contribute to the blood-brain barrier.

What type of glial cell is responsible for myelinating axons in the CNS?

Oligodendrocytes myelinate axons in the central nervous system.

What is the role of ependymal cells?

Ependymal cells line the central canal of the spinal cord and ventricles of the brain, helping to circulate cerebrospinal fluid.

What distinguishes white matter from gray matter in the CNS?

White matter is composed of myelinated axons, while gray matter consists of neuronal cell bodies and unmyelinated axons.

What are microglia and what is their function?

Microglia are the immune cells of the CNS that respond to injury and disease by clearing debris and dead cells.

What is the definition of the axolemma?

The axolemma is the plasma membrane of an axon.

Define the term 'Basal-lamina' in the context of neuroglia.

The basal-lamina is a thin layer of extracellular matrix that supports and anchors cells, including those in the nervous system.