Exam (elaborations)
Chapter 09 Nervous System
Chapter 09 Nervous System
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Chapter 09: Nervous SystemMULTIPLE CHOICE
1. The two principal divisions that make up the nervous system are the
a. central and sympathetic
b. sympathetic and parasympathetic
c. peripheral and central
d. peripheral and autonomic
ANS: C DIF: Memorization REF: p. 179
OBJ: 1 TOP: Organs and divisions of the nervous system
2. The two types of cells found in the nervous system are
a. motor neurons and sensory neurons
b. neurons and glia cells
c. glia cells and astrocytes
d. none of the above
ANS: B DIF: Memorization REF: p. 180
OBJ: 2 TOP: Cells of the nervous system
3. The part of the neuron that carries impulses to the neuron cell body is the
a. dendrite
b. axon
c. neurolemma
d. node of Ranvier
ANS: A DIF: Memorization REF: p. 180
OBJ: 2 TOP: Neurons
4. The part of the neuron that carries impulses away from the neuron cell body is the
a. dendrite
b. axon
c. neurolemma
d. node of Ranvier
ANS: B DIF: Memorization REF: p. 180
OBJ: 2 TOP: Neurons
5. The types of neurons that carry impulses to the brain and spinal cord are called
a. motor neurons
b. sensory neurons
c. efferent neurons
d. both b and c above
ANS: B DIF: Memorization REF: p. 181
OBJ: 2 TOP: Neurons
6. The types of neurons that carry impulses away from the brain and spinal cord are called
a. motor neurons
b. sensory neurons
, c. efferent neurons
d. both a and c above
ANS: D DIF: Memorization REF: p. 181
OBJ: 2 TOP: Neurons
7. Interneurons connect
a. efferent neurons to motor neurons
b. afferent neurons to sensory neurons
c. central neurons to afferent neurons
d. none of the above
ANS: D DIF: Memorization REF: p. 181
OBJ: 2 TOP: Neurons
8. Cells that produce myelin for the cells of the brain and spinal cord are the
a. Schwann cells
b. microglia
c. astrocytes
d. oligodendrocytes
ANS: D DIF: Memorization REF: p. 181
OBJ: 2 TOP: Glia
9. Cells that are important in the blood-brain barrier are the
a. Schwann cells
b. microglia
c. astrocytes
d. oligodendrocytes
ANS: C DIF: Memorization REF: p. 181
OBJ: 2 TOP: Glia
10. Cells that produce myelin for cells outside the brain and spinal cord are the
a. Schwann cells
b. microglia
c. astrocytes
d. oligodendrocytes
ANS: A DIF: Memorization REF: p. 182
OBJ: 2 TOP: Neurons
11. Glia cells that act as microbe-eating cells are the
a. Schwann cells
b. microglia
c. astrocytes
d. oligodendrocytes
ANS: B DIF: Memorization REF: p. 181
OBJ: 2 TOP: Glia
12. The tough fibrous sheath covering the whole nerve is called the
a. perineurium
, b. fascicles
c. epineurium
d. none of the above
ANS: C DIF: Memorization REF: p. 182
OBJ: 3 TOP: Nerves and tracts
13. Reflexes can be
a. a single neuron
b. two neurons
c. three neurons
d. both b and c above
ANS: D DIF: Memorization REF: p. 183
OBJ: 3 TOP: Reflex arcs
14. A synapse is
a. a gap between neurons
b. crossed by a chemical
c. separates the axon end of one neuron from the dendrite of the next
d. all of the above
ANS: D DIF: Memorization REF: p. 183
OBJ: 3 TOP: Reflex arcs
15. The difference between a three- and a two-neuron reflex is that a three-neuron reflex
a. passes through the dorsal root ganglion
b. includes an efferent neuron
c. includes an interneuron
d. includes an afferent neuron
ANS: C DIF: Application REF: p. 183 OBJ: 3
TOP: Reflex arcs
16. The resting neuron
a. has a slight negative charge on the exterior
b. has a slight positive charge on the exterior
c. has an excess of sodium inside the cell
d. both a and c above
ANS: B DIF: Memorization REF: p. 184
OBJ: 4 TOP: Nerve impulses
17. When a section of the resting neuron is stimulated
a. sodium ions rush into the cell
b. sodium ions rush out of the cell
c. the interior of the cell becomes slightly positive
d. both a and c above
ANS: D DIF: Memorization REF: pp. 184-185
OBJ: 4 TOP: Nerve impulses
18. When the nerve impulse encounters a myelin-covered section of neuron
, a. it moves more slowly than it would in nonmyelinated sections
b. it stops
c. it jumps over the myelin
d. none of the above
ANS: C DIF: Memorization REF: p. 185
OBJ: 4 TOP: Nerve impulses
19. A synapse includes
a. a very narrow synaptic cleft
b. a presynaptic neuron with neurotransmitter receptor sites on its membrane
c. a postsynaptic neuron that releases the neurotransmitter
d. all of the above
ANS: A DIF: Memorization REF: p. 187
OBJ: 4 TOP: The synapse
20. Neurotransmitters
a. are released by the postsynaptic neuron
b. are distributed randomly throughout the nervous system
c. can diffuse back into the synaptic knob
d. all of the above
ANS: C DIF: Memorization REF: p. 187
OBJ: 4 TOP: The synapse
21. The brainstem includes the
a. medulla oblongata, pons, and thalamus
b. medulla oblongata, midbrain, and hypothalamus
c. pons, midbrain, and medulla oblongata
d. medulla oblongata, pons, and cerebellum
ANS: C DIF: Memorization REF: p. 188
OBJ: 5 TOP: Divisions of the brain
22. The ―vital centersǁ (the cardiac, respiratory, and vasomotor centers) are located in the
a. pons
b. midbrain
c. thalamus
d. medulla oblongata
ANS: D DIF: Memorization REF: p. 188
OBJ: 5 TOP: Brainstem
23. The association of sensation with emotion occurs in the
a. hypothalamus
b. thalamus
c. medulla oblongata
d. cerebellum
ANS: B DIF: Memorization REF: p. 190
OBJ: 5 TOP: Diencephalon
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