CHAPTER 7 TEST 5

The part of the neuron that typically conducts nerve impulses away from the cell body is the_________.

axon

the term central nervous system refers to the_____________.

brain and spinal cord

the midbrain, pons, and medulla oblongata are housed in the________.

brain stem

Which of the following is one of the major functions of the pons?

breathing

what part of a neuron receives signals and sends a message to the cell body?

dendrite

Which of the following represents the correct sequence from outermost to innermost layers of the meninges?

dura mater, arachnoid mater, pia mater

Which cilitated neuroglial cell circulates cerebrospinal fluid?

ependymal cells

the neural processes that convey incoming messages toward the cell body are indicated by_______

label A

the axon is indicated by

label B

The axon terminals are indicated by

label C

Support cells in the central nervous system are collectively called________.

neuroglia

The gaps between Schwann cells are found at regular intervals in peripheral system neurons are called____________.

nodes of raniver

What is the name of the cranial nerve III?

oculomotor

Which of these lists the components of a reflex arc in the correct sequence?

receptor; afferent neuron; control center; efferent neuron; effector

Which branch of the autonomic nervous system (ANS) mobilizes the body during extreme situations, such as rage or fear?

sympathetic division

Ependymal cells beat their cilia to help circulate cerebrospinal fluid (CSF) T/F

true

what cells form the myelin sheaths around nerve fibers in the PNS?

Schwann cells

why is white matter "white"?

it contains a high concentration of myelin.

The gaps between Schwann cells are indicated by

label H

the blood-brain barrier is effective against the passage of?

metabolic wastes such as urea

what division of the autonomic nervous system is often called the "rest- and- digest" division?

parasympathetic

Which division of the peripheral nervous system activates skeletal muscles?

somatic nervous system

Gaps between adjacent Schwann cells of a myelin sheath are known as nodes of Ranvier. T/F

true

the parasympathetic and sympathetic nervous systems are subdivisions of the autonomic nervous system T/F

true

the primary motor area allows us to consciously move our skeletal muscles. T/F

true

How many pairs of spinal nerves emerge from the spinal cord?

31

What are the two main functional subdivisions of the nervous system?

sensory and motor

which of these contributes to reduced oxygen supply to the brain, potentially resulting in senility?

artiosclerosis

what cells of the nervous system are responsible for anchoring neurons to their blood vessels and controlling the extracellular fluid concentrations of potassium and neurotransmitters?

astrocytes