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A&P 507 > Chapter 13 > Flashcards

Chapter 13 Flashcards

1
Q 
The \_\_\_\_\_\_\_\_\_\_ is part of the CNS and the \_\_\_\_\_\_\_\_\_\_ is part of the PNS.
	 spinal nerve; spinal cord
	 brain; spinal cord
	 spinal cord; spinal nerve
	 cranial nerve; spinal nerve
A

spinal cord; spinal nerve

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2
Q 
The spinal cord stops elongating at about \_\_\_\_\_\_\_\_\_\_ years of age.
	 4
	 15
	 2
	 10
A

4

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3
Q 
The spinal cord consists of \_\_\_\_\_\_\_\_\_\_ segments, each associated with two pairs of nerve roots.
	 5
	 29 to 31
	 12
	 31
A

31

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4
Q 
The cerebrospinal fluid (CSF) circulates within the \_\_\_\_\_\_\_\_\_\_.
	 dura mater
	 subdural space
	 subarachnoid space
	 pia mater
A

subarachnoid space

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5
Q 
The \_\_\_\_\_\_\_\_ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament.
	 ventral root
	 filum terminale
	 dorsal root
	 cauda equina
	 conus medullaris
A

filum terminale

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6
Q 
Spinal nerves are
	 purely sensory.
	 interneuronal.
	 purely motor.
	 both sensory and motor.
	 involuntary.
A

both sensory and motor.

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7
Q 
The dorsal root ganglia mainly contain
	 cell bodies of motor neurons.
	 axons of motor neurons.
	 cell bodies of sensory neurons.
	 synapses.
	 axons of sensory neurons.
A

cell bodies of sensory neurons.

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8
Q 
The tough, fibrous, outermost covering of the spinal cord is the
	 pia mater.
	 dura mater.
	 epidural block.
	 periosteum.
	 arachnoid.
A

dura mater.

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9
Q

The subdural space lies between
the pia mater and the subarachnoid space.
the dura mater and the arachnoid mater.
the pia mater and the dura mater.
the arachnoid mater and the pia mater.
the endosteum and the periosteum.

A

the dura mater and the arachnoid mater.

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10
Q 
The layer of the meninges in direct contact with the spinal cord is the
	 arachnoid.
	 choroid plexus.
	 subarachnoid space.
	 pia mater.
	 dura mater.
A

pia mater.

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11
Q 
A dorsal and ventral root of each spinal segment unite to form a
	 lumbar enlargement.
	 spinal ganglion.
	 spinal nerve.
	 cervical enlargement.
	 spinal meninx.
A

spinal nerve.

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12
Q 
In meningitis,
	 viruses can be the cause.
	 CSF flow can be disrupted.
	 inflammation of the meninges occurs.
	 bacteria can be the cause.
	 All of the answers are correct.
A

All of the answers are correct.

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13
Q

Which of the following is true regarding an epidural block?

1. It is commonly used as a method of pain control during labor and delivery.
2. It can provide mainly sensory anesthesia, depending on the anesthetic selected.
3. It affects only the spinal nerves in the immediate area of the injection.
4. It can provide sensory and motor anesthesia, depending on the anesthetic selected.
5. All of the answers are correct.
A
  1. All of the answers are correct.
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14
Q 
Cerebrospinal fluid flows within the
	 dura mater.
	 pia mater.
	 subarachnoid space.
	 arachnoid mater.
	 filum terminale.
A

subarachnoid space.

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15
Q 
Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the
	 arachnoid mater.
	 epidural space.
	 cerebral ventricles.
	 dura mater.
	 subarachnoid space.
A

subarachnoid space.

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16
Q 
The white matter of the spinal cord is mainly
	 Schwann cells.
	 nodes of Ranvier.
	 myelinated and unmyelinated axons.
	 unmyelinated axons.
	 neuroglia.
A

myelinated and unmyelinated axons.

17
Q 
Which nerve plexus innervates the pectoral girdle and upper limbs?
	 sacral plexus
	 brachial plexus
	 lumbar plexus
	 cervical plexus
A

brachial plexus

18
Q 
Which of these cervical plexus nerves innervates the diaphragm?
	 phrenic nerve
	 transverse cervical nerve
	 great auricular nerve
	 lesser occipital nerve
A

phrenic nerve

19
Q 
Which nerve does NOT belong to the sacral plexus?
	 sciatic nerve
	 obturator nerve
	 tibial nerve
	 fibular nerve
A

obturator nerve

20
Q

What area of the body does the obturator nerve serve?
abdominal muscles
skin over the medial surface of the leg
skin over the posterior surface of the leg
muscles of the posterior thigh

A

skin over the medial surface of the leg

21
Q 
The connective tissue layer that covers Schwann cells is the \_\_\_\_\_\_\_\_\_\_.
	 endoneurium
	 perineurium
	 epineurium
	 endomysium
A

endoneurium

22
Q 
The region of the body surface monitored by a pair of spinal nerves is known as a(n) \_\_\_\_\_\_\_\_\_\_.
	 segment
	 input domain
	 dermatome
	 dermal band
23
Q 
The brachial plexus gives rise to all of the following nerves, except the
	 musculocutaneous.
	 phrenic.
	 ulnar.
	 median.
	 radial.
24
Q

A reflex arc always includes a(n) __________.
sensory receptor
efferent axon
afferent axon
A reflex arc always includes all of these structures.

A

A reflex arc always includes all of these structures.

25
Q 
The reflex that limits muscle tension is the \_\_\_\_\_\_\_\_\_\_ reflex.
	 stretch
	 reciprocal
	 flexor
	 tendon
26
Q 
The \_\_\_\_\_\_\_\_\_\_ reflex involves activating muscles contralateral to the receptor.
	 crossed extensor
	 flexor
	 stretch
	 tendon
A

crossed extensor

27
Q

A distinction about the flexor reflex is that it __________.
prevents a muscle from overstretching
moves a limb away from a painful stimulus
prevents a muscle from generating excessive tension
is an example of a monosynaptic reflex

A

moves a limb away from a painful stimulus

28
Q

All of the following are true of polysynaptic reflexes, except that they
involve reciprocal innervation.
are intersegmental in distribution.
are arranged according to dermatomes.
have reverberating circuits that prolong the reflexive motor response.
involve pools of interneurons.

A

are arranged according to dermatomes.

29
Q

In which of the following would the delay between stimulus and response be greater?
a monosynaptic reflex
a polysynaptic reflex

A

a polysynaptic reflex

A&P 507 (12 decks)

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