Glossary

Question 0

Chemical substance secreted at the ends of many nerve fibres, esp in ANS and responsible for transmission of nervous impulses.

Answer 0

Acetylcholine

Question 1

Either of the 6th pair of cranial nerves that convey motor impulses to the rectus muscle on the lateral side of each eye.

Answer 1

Abducens

Question 2

A momentary change in electrical potential on the surface of a cell, especially of a nerve or muscle cell, that occurs when it is stimulated, resulting in an electrical impulse.

Answer 2

Action potential

Question 3

Wasting of muscles, caused by disease of the nerves supplying them

Answer 3

Amyotrophic

Question 4

Star shaped cell, especially a neuroglial cell of nervous tissue.

Answer 4

Astrocytes

Question 5

The usually long process of a nerve fibre that generally conducts impulses away from the brain

Answer 5

Axon

Question 6

A physiological mechanism that alters the permeability of brain capillaries so that some substances, such as certain drugs, are prevented from entering brain tissue, while other substances are allowed to enter freely.

Answer 6

Blood brain barrier