Nervous System In-Class Exercise
1. List the two types of motor neurons:
____________________________________
____________________________________
2. Which of the following is classified as a “visceral” structure?
A.
B.
C.
D.
E.
Bone
Skeletal muscle
Dermis of skin
Smooth muscle
C&D
3. Which of the following is classified as a “somatic” structure?
A.
B.
C.
D.
E.
Carotid artery
Liver
Sternum
Sweat gland
None of the above
4. Which nerve fibers carry sensation of a mosquito bite on the back, just lateral to the spinous process
of the T4 vertebra?
A.
B.
C.
D.
Somatic afferent
Somatic efferent
Visceral afferent
Visceral efferent
5. The cell bodies of preganglionic sympathetic neurons are located exclusively in the
A.
B.
C.
C.
E.
brain.
C1-C5 spinal cord.
dorsal horn of the spinal cord.
paravertebral (chain) ganglia.
T1-L2/L3 spinal cord.
6. The diagram to the right illustrates which of the following spinal nerves?
A.
B.
C.
D.
E.
C5
T3
L4
S1
Can’t tell
7. Using the diagram below, place the correct letter of the labeled structure in the spaces below.
________ spinal nerve
________ dorsal horn
________ dorsal root
________ ventral root
________ ventral horn
________ paravertebral (chain) ganglion
________ ventral primary ramus
________ dorsal primary ramus
________ dorsal root ganglion
________ lateral horn
8. In the diagram, structure “D” contains
A.
B.
C.
D.
E.
F.
Somatic motor fibers
Visceral motor fibers
Somatic sensory fibers
A&B
A&C
A, B & C
9. In the diagram, structure “H” contains
A.
B.
C.
D.
E.
F.
Somatic motor fibers
Visceral motor fibers
Somatic sensory fibers
A&B
A&C
A, B & C
10. A 38-year-old male is admitted to the emergency department after a car collision. During physical
examination several lacerations in the abdomen are discovered. Pain from lacerations or irritations of
the skin of the abdomen is conveyed to the central nervous system by which of the following?
A.
B.
C.
D.
Dorsal primary rami
Communicating rami
Ventral primary rami
Ventral roots
11. The cell bodies of sympathetic neurons that synapse on the arrector pili muscles in the skin are
located in the
A.
B.
C.
D.
dorsal horn of the spinal cord.
dorsal root ganglion.
sympathetic chain ganglion.
ventral horn of the spinal cord.
12. A chordoma compressing the L5 ventral root in the vertebral canal may result in loss of
A.
B.
C.
D.
cutaneous sensation in the lower limb and lower back.
cutaneous sensation and sweating in the lower limb and lower back.
muscle strength in the lower limb and lower back.
muscle strength and sweating in the lower limb and lower back.