Ch11 Dr Mon

Front

What is grey matter in the context of the nervous system?

Back

Grey matter refers to the regions of the brain and spinal cord that contain the cell bodies of neurons, as opposed to white matter, which contains myelinated axons.

Front

What is the role of ependymal cells in the central nervous system?

Back

Ependymal cells line the ventricles of the brain and the central canal of the spinal cord, playing a crucial role in the production and circulation of cerebrospinal fluid (CSF).

Front

What is the function of aquaporin channels in the generation of cerebrospinal fluid (CSF)?

Back

Aquaporin channels facilitate the movement of water across cell membranes, which is essential for the production of CSF.

Front

What are tight junctions and their significance in the neurovascular unit?

Back

Tight junctions are connections between endothelial cells that prevent the passage of substances between them, maintaining the blood-brain barrier.

Front

What is the difference between a neuron and a nerve?

Back

A neuron is a single nerve cell that transmits information, while a nerve is a bundle of axons from multiple neurons, surrounded by connective tissue.

Front

What type of cells produce myelin in the central nervous system (CNS)?

Back

Oligodendrocytes are the cells responsible for producing myelin in the CNS, which insulates axons and enhances signal transmission.

Front

What is the role of astrocytes in the nervous system?

Back

Astrocytes provide structural support, regulate blood flow, maintain the blood-brain barrier, and assist in neurotransmitter recycling.

Front

What are the main components of the neurovascular unit?

Back

The neurovascular unit consists of neurons, astrocytes, endothelial cells, and pericytes, all of which work together to maintain brain homeostasis.

Front

How do red blood cells differ from other cells in the context of cerebrospinal fluid (CSF) production?

Back

Red blood cells are not involved in the production of CSF; instead, they are primarily responsible for oxygen transport in the blood.

Front

What is the significance of the basal lamina in the neurovascular unit?

Back

The basal lamina provides structural support and regulates interactions between cells in the neurovascular unit, contributing to the integrity of the blood-brain barrier.