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Chapter 13: The Spinal Cord and Nerves

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1) The spinal cord is part of the
A) peripheral nervous system.
B) somatic nervous system.
C) central nervous system.
D) autonomic nervous system.
E) afferent nervous system.
C) central nervous system.
2) The ________ is a strand of fibrous tissue that
provides longitudinal support as a component of the
coccygeal ligament.
A) conus medullaris
B) filum terminale
C) cauda equina
D) dorsal root
E) ventral root
B) filum terminale
3) Spinal nerves are
A) purely sensory.
B) purely motor.
C) both sensory and motor.


D) interneuronal.
E) involuntary.

C) both sensory and motor.
4) The spinal cord consists of five regions
and ________ segments.
A) 5
B) 12
C) 25
D) 31
E) The number varies widely among individuals.
D) 31
5) The dorsal root ganglia mainly contain
A) axons of motor neurons.
B) axons of sensory neurons.
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C) cell bodies of motor neurons.
D) cell bodies of sensory neurons.
E) synapses.

D) cell bodies of sensory neurons.
6) The dorsal root of a spinal nerve contains
A) axons of motor neurons.
B) axons of sensory neurons.
C) cell bodies of motor neurons.
D) cell bodies of sensory neurons.
E) interneurons.
B) axons of sensory neurons.
7) The ventral root of a spinal nerve contains
A) axons of motor neurons.
B) axons of sensory neurons.
C) cell bodies of motor neurons.
D) cell bodies of sensory neurons.
E) interneurons.
A) axons of motor neurons.
8) The tough, fibrous, outermost covering of
the spinal cord is the
A) arachnoid.
B) pia mater.
C) dura mater.
D) epidural block.
E) periosteum.
C) dura mater.
9) After age ________ the vertebral column continues to elongate, but the spinal cord itself does not.
A) 8
B) 12
C) 18
D) 4
E) 1
D) 4
10) If the dorsal root of a spinal nerve is severed,
A) output to skeletal muscles would be blocked.
B) output to visceral organs would be blocked.
C) the spinal cord would not be able to process information at that level.
D) the brain would not be able to communicate with that level of the spinal cord.
E) sensory input would be blocked.
E) sensory input would be blocked.
11) The subdural space lies between
A) the arachnoid mater and the pia mater.
B) the pia mater and the dura mater.
C) the dura mater and the arachnoid mater.
D) the pia mater and the subarachnoid space.
E) the endosteum and the periosteum.
C) the dura mater and the arachnoid mater.
12) The layer of the meninges in direct contact with the spinal cord is
the
A) dura mater.
B) subarachnoid space.
C) arachnoid.
D) pia mater.
E) choroid plexus.
D) pia mater.
13) A dorsal and ventral root of each spinal segment unite to form a
A) cervical enlargement.
B) lumbar enlargement.
C) spinal nerve.
D) spinal meninx.
E) spinal ganglion.
C) spinal nerve.
14) In meningitis,
A) inflammation of the meninges occurs.
B) bacteria can be the cause.
C) viruses can be the cause.
D) CSF flow can be disrupted.
E) All of the answers are correct.
E) All of the answers are correct.
15) Which of the following is true regarding an epidural block?
A) It is commonly used as a method of pain control during labor and delivery.
B) It affects only the spinal nerves in the immediate area of the injection.
C) It can provide sensory and motor anesthesia, depending on the anesthetic selected.
D) It can provide mainly sensory anesthesia, depending on the anesthetic selected.
E) All of the answers are correct.
E) All of the answers are correct.
16) Cerebrospinal fluid flows within the
A) filum terminale.
B) subarachnoid space.
C) dura mater.
D) pia mater.
E) arachnoid mater.
B) subarachnoid space.
17) The spinal cord continues to elongate until about age
A) 20 years.
B) 10 years.
C) 4 years.
D) 6 months.
E) 2 months.
C) 4 years.
18) The specialized membranes that surround the spinal cord are termed the
A) cranial meninges.
B) cranial mater.
C) spinal meninges.
D) spinal mater.
E) epidural membranes.
C) spinal meninges.
19) Blood vessels that supply the spinal cord run along the surface of the
A) pia mater.
B) dura mater.
C) epidural space.
D) subdural space.
E) subarachnoid space.
A) pia mater.
20) Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the
A) dura mater.
B) arachnoid mater.
C) epidural space.
D) subarachnoid space.
E) cerebral ventricles.
D) subarachnoid space.
21) In an adult, the conus medullaris is found at about
A) T6.
B) T10.
C) L1.
D) L5.
E) C1.
C) L1.
22) Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a result, which of the following would you expect?
A) loss of sensation in his torso
B) inability to breathe
C) problems with moving his arms
D) uncontrollable sweating of his feet
E) problems with moving his legs
A) loss of sensation in his torso
23) The white matter of the spinal cord is mainly
A) unmyelinated axons.
B) neuroglia.
C) Schwann cells.
D) myelinated and unmyelinated axons.
E) nodes of Ranvier.
D) myelinated and unmyelinated axons.
24) The gray horns of the spinal cord contain mainly
A) nerve tracts.
B) columns.
C) meninges.
D) nerve cell bodies.
E) funiculi.
D) nerve cell bodies.
25) The posterior horns of the spinal cord contain mainly
A) sensory nuclei.
B) somatic motor nuclei.
C) autonomic motor nuclei.
D) nerve tracts.
E) sympathetic nuclei.
A) sensory nuclei.
26) The anterior horns of the spinal cord contain mainly
A) sensory nuclei.
B) somatic motor nuclei.
C) autonomic motor nuclei.
D) nerve tracts.
E) sympathetic nuclei.
B) somatic motor nuclei.
27) Nerve tracts or fasciculi make up the
A) central canal.
B) posterior gray horns.
C) gray commissures.
D) white columns.
E) anterior gray horns.
D) white columns.
28) In the spinal cord, white matter is separated into ascending and descending tracts organized as
A) nuclei.
B) ganglia.
C) columns.
D) nerves.
E) horns.
C) columns.
29) The outward projections from the central gray matter of the spinal cord are called
A) wings.
B) horns.
C) pyramids.
D) fibers.
E) tracts.
B) horns.
30) Axons crossing from one side of the spinal cord to the other within the gray matter are found in the
A) anterior gray horns.
B) lateral gray horns.
C) posterior gray horns.
D) gray commissures.
E) white commissures.
D) gray commissures.
31) The white matter of the spinal cord contains
A) bundles of axons with common origins, destinations, and functions.
B) bundles of dendrites with common origins, destinations, and functions.
C) sensory and motor nuclei.
D) both axons and dendrites.
E) interneurons.
A) bundles of axons with common origins, destinations, and functions.
http://imgur.com/GWecRWw
32) Identify the structure labeled “1.”
A) anterior white column
B) lateral white column
C) lateral white horn
D) median commissure
E) posterior white column
E) posterior white column
http://imgur.com/GWecRWw
33) Identify the structure labeled “4.”
A) posterior gray column
B) dorsal gray ganglion
C) posterior white column
D) posterior gray horn
E) anterior gray horn
D) posterior gray horn
http://imgur.com/GWecRWw
34) Identify the structure labeled “10.”
A) anterior white commissure
B) anterior median fissure
C) anterior white column
D) anterior gray commissure
E) anterior white horn
D) anterior gray commissure
http://imgur.com/GWecRWw
35) What is the function of the structure labeled “12”?
A) control of skeletal muscle
B) somatic sensory receiving
C) visceral sensory receiving
D) control of visceral effectors
E) ascending pathway
B) somatic sensory receiving
http://imgur.com/GWecRWw
36) What is the function of the structure labeled “14”?
A) control of skeletal muscle
B) somatic sensory processing
C) control of visceral effectors
D) somatic motor control
E) visceral sensory processing
C) control of visceral effectors
http://imgur.com/GWecRWw
37) Where do somatic motor neurons reside?
A) 10
B) 12
C) 13
D) 14
E) 15
E) 15
http://imgur.com/GWecRWw
38) Where are the white columns of the spinal cord?
A) 4, 5, 6
B) 1, 2, 3
C) 7, 11
D) 12, 13
E) 8
B) 1, 2, 3
39) The outermost connective-tissue covering of nerves is the
A) endoneurium.
B) endomysium.
C) perineurium.
D) epineurium.
E) epimysium.
D) epineurium.
40) The preganglionic fibers that connect a spinal nerve with an autonomic ganglion in the thoracic and lumbar region of the spinal cord and carries visceral motor fibers that are myelinated form the
A) white rami communicantes.
B) gray rami communicantes.
C) dorsal ramus.
D) ventral ramus.
E) dermatomes.
A) white rami communicantes.
41) The postganglionic fibers that connect an autonomic ganglion in the thoracic or lumbar region with the spinal nerve and contain postganglionic fibers that innervate glands in the body wall or limbs are
A) white rami communicantes.
B) gray rami communicantes.
C) dorsal ramus.
D) ventral ramus.
E) dermatomes.
B) gray rami communicantes.
42) Postganglionic fibers of the autonomic nervous system that innervate internal organs do not rejoin the spinal nerve but form
A) dorsal rami.
B) ventral rami.
C) white rami.
D) gray rami.
E) sympathetic nerves.
E) sympathetic nerves.
43) Which of the following associations is incorrect?
A) 8 cervical spinal nerves
B) 11 thoracic spinal nerves
C) 5 lumbar spinal nerves
D) 5 sacral spinal nerves
E) 1 coccygeal spinal nerve
B) 11 thoracic spinal nerves
44) The ________ of each spinal nerve innervates the skin and muscles of the back.
A) white ramus communicantes
B) gray ramus communicantes
C) dorsal ramus
D) ventral ramus
E) dermatome
C) dorsal ramus
45) Muscles of the neck and shoulder are innervated by spinal nerves from the ________ region.
A) cervical
B) thoracic
C) lumbar
D) sacral
E) coccygeal
A) cervical
46) The ventral rami of spinal nerves C5 to T1 contribute fibers to the ________ plexus.
A) cervical
B) brachial
C) lumbar
D) sacral
E) thoracic
B) brachial
47) In which plexus does the ulnar nerve arise?
A) cranial
B) cervical
C) brachial
D) lumbar
E) sacral
C) brachial
48) In the condition ________, a virus infects dorsal root ganglia, causing a painful rash whose distribution corresponds to that of the affected sensory nerves as seen in their dermatomes.
A) myasthenia gravis
B) neuronal damage
C) shingles
D) chickenpox
E) Hodgkin’s disease
C) shingles
49) The layer of connective tissue that surrounds a fascicle within a peripheral nerve is the
A) perineurium.
B) epineurium.
C) endoneurium.
D) epimysium.
E) endosteum.
A) perineurium.
50) Spinal nerves from the sacral region of the cord innervate the ________ muscles.
A) shoulder
B) intercostal
C) abdominal
D) leg
E) facial
D) leg

Cite this Chapter 13: The Spinal Cord and Nerves

Chapter 13: The Spinal Cord and Nerves. (2017, Dec 06). Retrieved from https://graduateway.com/chapter-13-the-spinal-cord-and-nerves-essay/

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