CH. 14

Question 1

The brain is protected by?

Answer 1

Cranial bones

Question 2

How many layers is the cranial dura mater composed of?

Answer 2

2 layers

Question 3

The brain stem is composed of the:

Answer 3

Medulla oblongata, pons, and midbrain.

Question 4

What are the two types of nerve cells?

Answer 4

Neurins and neuroglia

Question 5

conduct nerve impulses; form complex processing networks

Answer 5

Neurons

Question 6

support and maintain neurons; more numerous

Answer 6

Neuroglia

Question 7

Produces myeline in the CNS

Answer 7

Oligodendrocytes

Question 8

What spinal cord feature

Question 9

What spinal cord feature is the area where the nerves that supply the lower limb emerge?

Answer 9

lumbar enlargement

Question 10

which of the following is NOT a type of channel used in production of electrical signals in neurons?

Answer 10

lon- gated channel

Question 11

What part of the reflex arc receives sensory information and decides how to respond to a change in the body’s condition?

Answer 11

Integration center

Question 12

What structure cintains cerebrospinal fluid?

Answer 12

subarachnoid space

Question 13

Gray matter is myelinated; white matter is unmyelinated. True or false?

Answer 13

False

Question 14

The diameter of an axon has no affect on the speed of nerve transmission. True or false?

Answer 14

False

Question 15

The most common type of synapses are chemical. True or false?

Answer 15

True

Question 16

What part is a reflec arc that monitors body conditions?

Answer 16

sensory receptor

Question 17

Which of the three spinal meninges is the most superficial?

Answer 17

dura mater

Question 18

This type of neurin has one dendrite and one axon emerging from the cell body.

Answer 18

Bipolar neuron

Question 19

Faster communication and synchronization are two advantages of?

Answer 19

electrical synapses

Question 20

Which layer of protective connective tissue is the outermost covering surrounding a spinal nerve?

Answer 20

Epineurium