Nervous System

Question 1

Axon

Answer 1

The part of a nerve cell that usually send signals to other nerves or structures

Question 2

Blood-brain barrier

Answer 2

The barrier that exists between the blood and the cerebrospinal fluid, which prevents the passage of various substances from the bloodstream to the brain

Question 3

Carpal tunnel

Answer 3

Space under a ligament in the wrist, through which the median nerve enters the palm of the hand

Question 4

Cauda equina

Answer 4

The bundle of spinal nerve roots arising from the end of the spinal cord, and filling the lower part of the spinal canal

Question 5

Cerebellum

Answer 5

The lower part of the brain that is beneath the posterior portion of the cerebrum it regulates, unconscious coordination of movement

Question 6

Cerebrospinal fluid

Answer 6

Water like fluid that circulates around and protects the brain and spinal cord

Question 7

Cerebrum

Answer 7

The principal portion of the brain which occupies the major portion of the interior of the skull and controls, conscious movement sensation, and thought

Question 8

Cortex

Answer 8

The external layer of gray matter covering the hemispheres of the cerebrum and cerebellum

Question 9

Cranium

Answer 9

The part of the skull that holds the brain

Question 10

Dura Mater

Answer 10

A tough fibrous membrane that covers the brain and spinal cord, but is separated from them by a small space. It is the outermost layer of the three membranes

Question 11

Epidural

Answer 11

Layer of connective tissues immediately outside the dura mater

Question 12

Glia (also termed neuroglia)

Answer 12

The major support cells of the brain these cells are involved in the nutrition and maintenance of the nerve cells

Question 13

Hemorrhage

Answer 13

Bleeding due to the escape of blood from a blood vessel

Question 14

Hypothalamus

Answer 14

A collection of specialized nerve cells at the base of the brain that controls the anterior and posterior pituitary secretions and is involved in other basic regulatory functions, such as as temperature control and attention

Question 15

Innervation

Answer 15

This is the connection between nerves and the body part they control

Question 16

Meninges

Answer 16

The three membranes covering the spinal cord and brain termed dura mater

Question 17

Myelin

Answer 17

The fat like substances, that surround the axon of nerve fibers and forms and insulating material

Question 18

Pituitary

Answer 18

Gland at the base of the brain that secrete hormones into the bloodstream

Question 19

Thalamus

Answer 19

Brain cells which lie in the upper part of the brainstem

Question 20

Ventricle

Answer 20

The cavities or chambers within the brain that contain the cerebrospinal fluid

Question 21

Vermis

Answer 21

Middle part of the cerebellum between the two hemispheres

Question 22

Cranial nerve

Answer 22

Nerves that exit the brain directly; there are 12 of them

Question 23

Femoral nerve

Answer 23

Peripheral nerve that innervates the anterior part of the leg

Question 24

Median nerve

Answer 24

The nerve formed from the brachial plexus that supplies muscle in the anterior forearm and thumb

Question 25

Radial nerve

Answer 25

Peripheral nerve that innervates the posterior part of the hand

Question 26

Sciatic nerve

Answer 26

Peripheral nerve that innervates the posterior part of the leg

Question 27

Spinal nerve

Answer 27

Nerves that exit the spinal column

Question 28

Tibial nerve

Answer 28

Peripheral nerve branch off of the sciatic nerve

Question 29

Ulnar nerve

Answer 29

Peripheral nerve that innervates the lateral aspect of the hand