Question 1

A depolarized neuron has

Accepted Answer

A)  high potassium and high sodium ion concentration inside the cell membrane. 
B)  high potassium ion concentration on the outside of the cell membrane and high sodium ion concentration on the inside of the cell membrane. 
C)  high sodium and high potassium ion concentrations outside the cell membrane. 
D)  high sodium ion concentration on the outside of the cell membrane and high potassium ion concentration on the inside of the cell membrane. 
A)  high potassium and high sodium ion concentration inside the cell membrane. 
B)  high potassium ion concentration on the outside of the cell membrane and high sodium ion concentration on the inside of the cell membrane. 
C)  high sodium and high potassium ion concentrations outside the cell membrane. 
D)  high sodium ion concentration on the outside of the cell membrane and high potassium ion concentration on the inside of the cell membrane.

Question 2

Many excitatory neurotransmitters usually cause __ influx so that the postsynaptic membrane moves toward threshold and depolarization can begin a new nerve impulse.

Accepted Answer

A)  calcium ion 
B)  chloride ion 
C)  potassium ion 
D)  sodium ion 
A)  calcium ion 
B)  chloride ion 
C)  potassium ion 
D)  sodium ion

Question 3

Which clinical sign is characteristic of the parasympathetic nervous system stimulation?

Accepted Answer

A)  bronchodilation 
B)  reduced digestion 
C)  reduced heart rate 
D)  vasodilation 
A)  bronchodilation 
B)  reduced digestion 
C)  reduced heart rate 
D)  vasodilation

Question 4

Afferent nerve fibers carry sensations

Accepted Answer

A)  away from the CNS. 
B)  through axons. 
C)  through motor nerve fibers. 
D)  toward the CNS. 
A)  away from the CNS. 
B)  through axons. 
C)  through motor nerve fibers. 
D)  toward the CNS.

Question 5

How many cranial nerves are there?

Accepted Answer

A)  12 
B)  18 
C)  20 
D)  24 
A)  12 
B)  18 
C)  20 
D)  24

Question 6

Many neurotransmitters are broken down by

Accepted Answer

A)  enzymes. 
B)  hormones. 
C)  potassium. 
D)  sodium. 
A)  enzymes. 
B)  hormones. 
C)  potassium. 
D)  sodium.

Question 7

A repolarized neuron has

Accepted Answer

A)  high potassium and high sodium ion concentration inside the cell membrane. 
B)  high potassium ion concentration on the outside of the cell membrane and high sodium ion concentration on the inside of the cell membrane. 
C)  high sodium and high potassium ion concentrations outside the cell membrane. 
D)  high sodium ion concentration on the outside of the cell membrane and high potassium ion concentration on the inside of the cell membrane. 
A)  high potassium and high sodium ion concentration inside the cell membrane. 
B)  high potassium ion concentration on the outside of the cell membrane and high sodium ion concentration on the inside of the cell membrane. 
C)  high sodium and high potassium ion concentrations outside the cell membrane. 
D)  high sodium ion concentration on the outside of the cell membrane and high potassium ion concentration on the inside of the cell membrane.

Question 8

Hypermetria results from injury to the

Accepted Answer

A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon. 
A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon.

Question 9

A ganglion is a

Accepted Answer

A)  cluster of CNS neuronal axon terminals. 
B)  cluster of CNS neuronal dendrites. 
C)  cluster of neuronal cell bodies in the CNS. 
D)  cluster of neuronal cell bodies outside the CNS. 
A)  cluster of CNS neuronal axon terminals. 
B)  cluster of CNS neuronal dendrites. 
C)  cluster of neuronal cell bodies in the CNS. 
D)  cluster of neuronal cell bodies outside the CNS.

Question 10

The part of the CNS that contains the corpus callosum is the

Accepted Answer

A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon. 
A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon.

Question 11

Nerve fibers is another name for

Accepted Answer

A)  axons. 
B)  dendrites. 
C)  myelin sheaths. 
D)  oligodendrocytes. 
A)  axons. 
B)  dendrites. 
C)  myelin sheaths. 
D)  oligodendrocytes.

Question 12

White matter is made up of

Accepted Answer

A)  myelinated axons. 
B)  neuroglia. 
C)  neuron cell bodies. 
D)  sensory receptors. 
A)  myelinated axons. 
B)  neuroglia. 
C)  neuron cell bodies. 
D)  sensory receptors.

Question 13

The largest part of the brain is the

Accepted Answer

A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon. 
A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon.

Question 14

A reflex arc originates from the/a

Accepted Answer

A)  brainstem. 
B)  gray matter. 
C)  motor neuron. 
D)  sensory receptor. 
A)  brainstem. 
B)  gray matter. 
C)  motor neuron. 
D)  sensory receptor.

Question 15

A terminal bouton is found

Accepted Answer

A)  at the end of the telodendron. 
B)  at the neurotransmitter receptors. 
C)  on the node of Ranvier. 
D)  on the postsynaptic neuron. 
A)  at the end of the telodendron. 
B)  at the neurotransmitter receptors. 
C)  on the node of Ranvier. 
D)  on the postsynaptic neuron.

Question 16

The parasympathetic nervous system nerves are also known as the

Accepted Answer

A)  cranial-sacral system. 
B)  cranio-lumbar system. 
C)  thoracolumbar system. 
D)  thoraco-sacral system. 
A)  cranial-sacral system. 
B)  cranio-lumbar system. 
C)  thoracolumbar system. 
D)  thoraco-sacral system.

Question 17

Which one of the following neurotransmitters is inhibitory only?

Accepted Answer

A)  acetylcholine 
B)  dopamine 
C)  gamma-aminobutyric acid 
D)  norepinephrine 
A)  acetylcholine 
B)  dopamine 
C)  gamma-aminobutyric acid 
D)  norepinephrine

Question 18

The centers of higher learning and intelligence are found in the

Accepted Answer

A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon. 
A)  brainstem. 
B)  cerebellum. 
C)  cerebrum. 
D)  diencephalon.

Question 19

What keeps many drugs from readily passing from the blood into the brain?

Accepted Answer

A)  anti-assimilation barrier 
B)  blood-brain barrier 
C)  cerebrospinal barrier 
D)  meninges 
A)  anti-assimilation barrier 
B)  blood-brain barrier 
C)  cerebrospinal barrier 
D)  meninges

Question 20

The three catecholamine neurotransmitters are

Accepted Answer

A)  acetylcholine, glycine, and epinephrine. 
B)  dopamine, acetylcholine, and glycine. 
C)  norepinephrine, epinephrine, and dopamine. 
D)  norepinephrine, epinephrine, and glycine. 
A)  acetylcholine, glycine, and epinephrine. 
B)  dopamine, acetylcholine, and glycine. 
C)  norepinephrine, epinephrine, and dopamine. 
D)  norepinephrine, epinephrine, and glycine.

Exam 9: Nervous System

A depolarized neuron has

Many excitatory neurotransmitters usually cause __ influx so that the postsynaptic membrane moves toward threshold and depolarization can begin a new nerve impulse.

Which clinical sign is characteristic of the parasympathetic nervous system stimulation?

Afferent nerve fibers carry sensations

How many cranial nerves are there?

Many neurotransmitters are broken down by

A repolarized neuron has

Hypermetria results from injury to the

A ganglion is a

The part of the CNS that contains the corpus callosum is the

Nerve fibers is another name for

White matter is made up of

The largest part of the brain is the

A reflex arc originates from the/a

A terminal bouton is found

The parasympathetic nervous system nerves are also known as the

Which one of the following neurotransmitters is inhibitory only?

The centers of higher learning and intelligence are found in the

What keeps many drugs from readily passing from the blood into the brain?

The three catecholamine neurotransmitters are

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