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
