psych

Glial cells whose function most closely resembles that of the immune system are called

microglia

What leads to Korsakoff's syndrome?

thiamine deficiency due to chronic alcoholism

As compared to dendrites, axons usually___

are covered with myelin

What is the main sources of nutrition for vertebrate neurons

glucose

The membrane of a neuron is composed of ____ with ____ embedded in them.

Fat molecules; proteins

What happens to a virus that happens to cross the blood brain barrier and enter the brain?

It remains there and may cause negative effects several years later

A presynaptic terminal is also known as

an end bulb

Dendrites__

are branching fibers that get narrower near their ends

What type of glia helps to synchronize the activity of axons?

astrocytes

Neurons typically have one ____, but many ____.

axon and dendrites

Water, oxygen and ____ most freely flow across a cell membrane.

carbon dioxide

The cell membrane is composed of two layers of

fat

Nodes of Ranvier are

gaps in the myelin of axons

What type of neuron in the pons receives information only from the other cells in the pons and sends information only to the other cells in the pons

intrinsic

Korsakoff's syndrome

is marked by severe memory impairments

The insulating material that covers many vertebrate axons is called the

myelin sheath

What types of glia builds myelin sheaths around the axons in the periphery of the body?

schwann cells

Ribosomes are the part of a cell that:

synthesizes new proteins