This figure shows a detail of the spinal cord, meninges, and spinal nerves.. A reflex where the sensory input and motor output are on opposite sides of the spinal cord is called an _____
Trang 216 The upper motor neurons that control skeletal muscles begin with a soma in
A the posterior horn of the spinal cord
B the anterior horn of the spinal cord
C the motor association cortex of the cerebrum
D the postcentral gyrus of the cerebrum
E the precentral gyrus of the cerebrum
17 The signals that control your handwriting travel down the spinal cord in
A the tectospinal tracts
B the corticospinal tracts
C the lateral vestibulospinal tracts
D the medial vestibulospinal tracts
E the spinocerebellar tracts
18 Many upper motor neurons synapse with lower motor neurons in
A the posterior horns
B the anterior horns
C the posterior column
D the anterior column
E the posterior root ganglion
19 Which of the following sensory functions involves neurons in the posterior root ganglia?
21 The following are all functions associated with the spinal cord except
A to protect neurons in both the ascending and descending tracts
B to mediate a reflex such as the withdrawal of a hand from pain
C to conduct sensory information up to the brain
D to conduct motor information down the cord
E to coordinate the alternating contraction of several muscle groups associated with locomotion
22 Which of the following fractures would be the least likely to cause a spinal cord injury?
Trang 323 This figure shows a detail of the spinal cord, meninges, and spinal nerves What does "1" represent?
A anterior horn
B anterior root of a spinal nerve
C posterior root of a spinal nerve
A dural sheath and dura mater
B dural sheath and vertebral bones
C dura mater and arachnoid mater
D arachnoid mater and pia mater
E dura mater and pia mater
26 This figure shows a cross section of the spinal cord What does "3" represent?
A anterior horn
B posterior horn
C anterior column
D posterior column
E anterior root of spinal cord
27 Cerebrospinal fluid fills in the space between the
A dural sheath and dura mater
B dural sheath and vertebral bones
C dura mater and arachnoid mater
D arachnoid mater and pia mater
E dura mater and pia mater
Trang 428 Which of the following structures is the richest in lipid content?
29 Gray matter contains
A glial cells, axons of motor neurons, and Schwann cells
B glial cells and myelinated fibers
C neurosomas, dendrites, and proximal parts of axons of neurons
D the distal part of axons of lower order motor neurons
E glial cells only
30 _ carry motor commands from the brain along the spinal cord
A Both anterior and posterior roots
A bundle of axons in the CNS
B cluster of dendrites in either the CNS or the PNS
C cluster of neurosomas in the PNS
D bundle of axons in the PNS
E cluster of neurosomas in the CNS
35 There are pairs of spinal nerves
Trang 536 This figure shows the anatomy of a nerve What does "3" represent?
38 This figure shows the posterior aspect of spinal nerve roots and plexuses What does "2" represent?
A the medulla oblongata
B a bundle of spinal nerves
C a bundle of cranial nerves
D the cervical enlargement
E the brachial enlargement
Trang 639 The ventral rami of the spinal nerves form nerve plexuses in all regions except
A the thoracic region
B the brachial region
C the cervical region
D the lumbar region
E the sacral region
40 The cervical plexus gives origin to the _ nerve(s)
43 Which of these is an ascending tract of the spinal cord?
A the lateral tectospinal tract
B the medial reticulospinal tract
C the ventral corticospinal tract
D the vestibulospinal tract
E the gracile fasciculus
Trang 744 A mixed nerve consists of both
A myelinated and unmyelinated fibers
B glial cells and nerve cells
C afferent and efferent fibers
D association and integration neurons
E spinal and cranial fibers
45 Which of the following branches of a spinal nerve have somas of solely sensory neurons?
A posterior (dorsal) root
B anterior (ventral) root
47 Somatosensory refers to these sensory signals except the sensory signals from
A bones and muscles
A posterior root ganglion; gray matter
B posterior root ganglion; white matter
C gray matter; white matter
D posterior root; anterior root
E white matter; gray matter
49 A _ is a cordlike organ composed of numerous _
A nerve fiber; nerves
B nerve fiber; axons
C nerve; axons
D nerve fiber; neurosomas
E nerve; neurosomas
50 Which one of the following best describes the order of a somatic reflex?
A somatic receptor → interneuron → afferent nerve fiber → efferent nerve fiber → skeletal muscle
B somatic receptor → efferent nerve fiber → interneuron → afferent nerve fiber → skeletal muscle
C somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → skeletal muscle
D somatic receptor → efferent nerve fiber → afferent nerve fiber → interneuron → skeletal muscle
E somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → smooth muscle
51 Which of the following groups of muscles have the most muscle spindles?
A muscles of the hand
B muscles of the back
C muscles of the thigh
D muscles of the middle-ear
E muscles of the torso
Trang 852 These are all properties of reflexes except
A reflex responses are very predictable
B reflexes are responses to sensory inputs
C reflexes are quick responses of the nervous system
D reflexes are not voluntary
E reflexes are spontaneous actions of the nervous system
53 A muscle spindle contains mostly
B stretch (myotatic) reflex
C flexor (withdrawal) reflex
D tendon reflex
E crossed extension reflex
55 The quickest reflex arcs involve only two neurons, thus forming reflex arcs
56 The flexor (withdrawal) reflex employs a , which maintains a sustained contraction
A parallel after-discharge circuit
B alpha motor neurons
C gamma motor neurons
D anulospiral endings
E secondary afferent (group II) fibers
59 The fibers that carry action potentials to cause skeletal muscle to contract are
A gamma motor neurons
Trang 960 You go to the movies after a long day and you begin to nod off as soon as the movie starts Your head starts to lower a little but this reflex causes your head to rise This is called the
A tendon reflex
B crossed extension reflex
C withdrawal reflex
D stretch (myotatic) reflex
E flexor (withdrawal) reflex
61 In the patellar tendon reflex arc, the patellar ligament is stretched, which stretches the quadriceps femoris muscle of the thigh This reflex will cause the quadriceps femoris to
A contract and the antagonist muscles, the hamstrings, to relax
B contract and the hamstrings also to contract
C relax and the hamstrings to contract
D relax and the hamstrings also to relax
E relax without any effect on the hamstrings
62 A reflex where the sensory input and motor output are on opposite sides of the spinal cord is called a(n) _ reflex arc
63 The tendon reflex
A causes a muscle that is being stretched to contract
B makes the contralateral motor neurons contract
C makes the ipsilateral motor neurons relax
D prevents overcontraction of a muscle
E causes a tendon to contract
64 This reflex shows the least synaptic delay
Trang 102 Cervical and lumbar enlargements are wide points in the spinal cord marking the emergence of motor
3 Each portion of the spinal cord served by a spinal nerve is called a segment of the cord
TRUE
Blooms Level: 1 Remember Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #3 Section: 13.01 Topic: Nervous System
4 Nerve fibers in a given tract in the white matter are similar in origin, destination, and function
TRUE
Blooms Level: 1 Remember Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #4 Section: 13.01 Topic: Nervous System
5 Motor signals typically begin in an upper motor neuron in the thalamus
FALSE
Blooms Level: 2 Understand Learning Outcome: 13.01.c Trace the pathways followed by nerve signals traveling up and down the spinal cord.
Saladin - Chapter 13 #5 Section: 13.01 Topic: Nervous System
6 Most nerves are motor nerves
FALSE
Blooms Level: 2 Understand Learning Outcome: 13.02.a Describe the anatomy of nerves and ganglia in general.
Saladin - Chapter 13 #6 Section: 13.02 Topic: Nervous System
7 A nerve fiber is enclosed in its own fibrous sleeve called perineurium
FALSE
Blooms Level: 1 Remember Learning Outcome: 13.02.a Describe the anatomy of nerves and ganglia in general.
Saladin - Chapter 13 #7 Section: 13.02 Topic: Nervous System
8 A ganglion is a swelling along a nerve containing cell bodies of peripheral neurons
TRUE
Blooms Level: 1 Remember Learning Outcome: 13.02.a Describe the anatomy of nerves and ganglia in general.
Saladin - Chapter 13 #8 Section: 13.02 Topic: Nervous System
Trang 119 A dermatome is a nerve innervating a specific region in the skin
FALSE
Blooms Level: 3 Apply Learning Outcome: 13.02.c Trace the branches of a spinal nerve distal to its attachments.
Saladin - Chapter 13 #9 Section: 13.02 Topic: Nervous System
10 Posterior root ganglia contain somas of unipolar neurons
11 Somatic reflexes are responses of skeletal, smooth, and cardiac muscles
12 The stretch reflex is a tendency of a muscle to stretch when it is overcontracted
13 A stretch reflex is often accompanied by reciprocal inhibition
14 The tendon reflex is the inhibition of a muscle contraction that occurs when its tendon is excessively
15 The cross extension reflex is the contraction of the extensors on one side of the body when the flexors
are contracted on the other side
16 The upper motor neurons that control skeletal muscles begin with a soma in
A the posterior horn of the spinal cord
B the anterior horn of the spinal cord
C the motor association cortex of the cerebrum
D the postcentral gyrus of the cerebrum
E the precentral gyrus of the cerebrum
Blooms Level: 1 Remember Learning Outcome: 13.01.c Trace the pathways followed by nerve signals traveling up and down the spinal cord.
Saladin - Chapter 13 #16
Section: 13.01 Topic: Nervous System
Trang 1217 The signals that control your handwriting travel down the spinal cord in
A the tectospinal tracts
B the corticospinal tracts
C the lateral vestibulospinal tracts
D the medial vestibulospinal tracts
E the spinocerebellar tracts
Blooms Level: 2 Understand Learning Outcome: 13.01.c Trace the pathways followed by nerve signals traveling up and down the spinal cord.
Saladin - Chapter 13 #17
Section: 13.01 Topic: Nervous System
18 Many upper motor neurons synapse with lower motor neurons in
A the posterior horns
B the anterior horns
C the posterior column
D the anterior column
E the posterior root ganglion
Blooms Level: 1 Remember Learning Outcome: 13.01.c Trace the pathways followed by nerve signals traveling up and down the spinal cord.
Saladin - Chapter 13 #18
Section: 13.01 Topic: Nervous System
19 Which of the following sensory functions involves neurons in the posterior root ganglia?
20 The spinal cord is divided into all of the following regions except
21 The following are all functions associated with the spinal cord except
A to protect neurons in both the ascending and descending tracts
B to mediate a reflex such as the withdrawal of a hand from pain
C to conduct sensory information up to the brain
D to conduct motor information down the cord
E to coordinate the alternating contraction of several muscle groups associated with locomotion
Blooms Level: 3 Apply Learning Outcome: 13.01.a State the three principal functions of the spinal cord.
Saladin - Chapter 13 #21
Section: 13.01 Topic: Nervous System
Trang 1322 Which of the following fractures would be the least likely to cause a spinal cord injury?
Saladin - Chapter 13
23 This figure shows a detail of the spinal cord, meninges, and spinal nerves What does "1" represent?
A anterior horn
B anterior root of a spinal nerve
C posterior root of a spinal nerve
D posterior horn
E spinal nerve
Blooms Level: 1 Remember
Figure: 13.02b Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #23
Section: 13.01 Topic: Nervous System
24 This figure shows a detail of the spinal cord, meninges, and spinal nerves What does "4" represent?
Saladin - Chapter 13 #24
Section: 13.01 Topic: Nervous System
25 Epidural anesthesia is introduced in the epidural space between the _ to block pain signals during
pregnancy
A dural sheath and dura mater
B dural sheath and vertebral bones
C dura mater and arachnoid mater
D arachnoid mater and pia mater
E dura mater and pia mater
Blooms Level: 3 Apply Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #25
Section: 13.01 Topic: Nervous System
Trang 14E anterior root of spinal cord
Blooms Level: 1 Remember
Figure: 13.02b Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #26
Section: 13.01 Topic: Nervous System
27 Cerebrospinal fluid fills in the space between the
A dural sheath and dura mater
B dural sheath and vertebral bones
C dura mater and arachnoid mater
D arachnoid mater and pia mater
E dura mater and pia mater
Blooms Level: 1 Remember Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #27
Section: 13.01 Topic: Nervous System
28 Which of the following structures is the richest in lipid content?
29 Gray matter contains
A glial cells, axons of motor neurons, and Schwann cells
B glial cells and myelinated fibers
C neurosomas, dendrites, and proximal parts of axons of neurons
D the distal part of axons of lower order motor neurons
E glial cells only
Blooms Level: 3 Apply Learning Outcome: 13.01.b Describe its gross and microscopic structure
Saladin - Chapter 13 #29
Section: 13.01 Topic: Nervous System
30 _ carry motor commands from the brain along the spinal cord
A Both anterior and posterior roots
Trang 1531 Second-order neurons synapse with third-order neurons in the
32 _ keep(s) nerve fibers insulated from one another
33 _ fibers innervate eyes and ears
34 A ganglion is a
A bundle of axons in the CNS
B cluster of dendrites in either the CNS or the PNS
C cluster of neurosomas in the PNS
D bundle of axons in the PNS
E cluster of neurosomas in the CNS
Blooms Level: 1 Remember Learning Outcome: 13.02.a Describe the anatomy of nerves and ganglia in general.
Saladin - Chapter 13 #34
Section: 13.02 Topic: Nervous System
35 There are pairs of spinal nerves
Trang 16Saladin - Chapter 13 #36
Section: 13.02 Topic: Nervous System
Saladin - Chapter 13