Practice Exam Questions on Spinal Cord and Spinal Nerves

Topics: Spinal cord, Nervous system, Cranial nerves Pages: 20 (2678 words) Published: October 6, 2013
Practice Exam #4 – Chapters 12, 13, 14 & 15

1) What would normally be found within the central canal of the spinal cord? a) Blood
b) Myelin
c) Cerebrospinal fluid
d) Air
e) Gray matter

2) The filum terminale is
a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral column b) An indentation on the dorsal side of the spinal cored
c) The tapered end of the spinal cord
d) An extension of the pia mater that anchors the spinal cord to the coccyx e) Where the cell bodies of sensory neurons are located

3) The cauda equina is
a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral column b) An indentation on the dorsal side of the spinal cored
c) The tapered end of the spinal cord
d) An extension of the pia mater that anchors the spinal cord to the coccyx e) Where the cell bodies of sensory neurons are located

4) The dorsal root ganglion is
a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral column b) An indentation on the dorsal side of the spinal cored
c) The tapered end of the spinal cord
d) An extension of the pia mater that anchors the spinal cord to the coccyx e) Where the cell bodies of sensory neurons are located

5) The part of a spinal nerve that contains only efferent fibers is the a) Dorsal root
b) Ventral root
c) Dorsal ramus
d) Ventral ramus
e) Plexus

6) To do a lumbar puncture, the needle is inserted into the
a) Central canal
b) Sacral plexus
c) Nucleus pulposus
d) Subarachnoid space
e) Gray commissure

7) The nerve that stimulates the diaphragm to contract is the a) Median nerve
b) Phrenic nerve
c) Sciatic nerve
d) Radial nerve
e) Second intercostals nerve

8) All of the following arise from the brachial plexus except the a) Axillary nerve
b) Phrenic nerve
c) Radial nerve
d) Ulnar nerve
e) Median nerve

9) The endoneurium is the
a) Lining of the central canal of the spinal cord
b) Space between the pia mater and the spinal cord
c) Connective tissue surrounding an individual axon
d) Connective tissue surrounding an entire nerve
e) Group of neurons forming a spinal tract

10) The spinal cord is suspended in the middle of its dural sheath by a) Ascending spinal tracts
b) The cauda equine
c) Cerebrospinal fluid
d) Denticulate ligaments
e) Epidural fat

11) The Subdural space normally contains
a) Fat
b) Interstitial fluid
c) Cerebral spinal fluid
d) Blood
e) Air

12) Neurons that transmit impulses from the receptors to the central nervous system are called a) Motor neurons
b) Association neurons
c) Bipolar neurons
d) Sensory neurons
e) Efferent neurons

13) The innermost layer of the Meninges is the
a) Dura mater
b) Arachnoid
c) Pia mater
d) Gray commissure
e) Conus medullaris

14) Ascending tracts contain
a) Motor neurons
b) Sensory neurons
c) Cerebrospinal fluid
d) Only cell bodies
e) Only Unmyelinated axons

15) The spinal cord is continuous with the
a) Occipital bone
b) Cerebral cortex
c) Medulla oblongata
d) Thalamus
e) Coccyx

16) All of the following would be examples of autonomic reflexes except a) Rising heart rat as blood pressure drops
b) Contraction of smooth muscle in the wall of the gastrointestinal tract to p7uch food along c) Secretion of hormones from the adrenal medulla during stress d) Contraction of the quadriceps femoris with the patellar tendon is stretched e) Dilation of blood vessels in the skin when body temperature increases

17) The contra lateral reflex that helps you maintain your balance when the flexor reflex is initiated is the a) Stretch reflex
b) Tendon reflex
c) Crossed extensor reflex
d) Abdominal reflex
e) Patellar reflex

18) Slight stretching of the skeletal muscle spindles will initiate a (n) a) Autonomic reflex
b) Somatic reflex arc
c) Muscle contraction
d) Visceral reflex
e) All answers are correct

19) Stepping on a tack...
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