ANPH - Peripheral Nervous System Ch 21 Flashcards
1
Q
- Which of the following is an incorrect statement?
a. There are 7 cervical nerve pairs.
b. There are 12 thoracic nerve pairs.
c. There are 5 lumbar nerve pairs.
d. All of the above are correct statements.
A
- a. There are 7 cervical nerve pairs.
2
Q
- The spinal root that has a noticeable swelling is the:
a. ventral root.
b. anterior root.
c. dorsal root.
d. none of the above.
A
- c. dorsal root.
3
Q
- The dorsal root ganglion contains:
a. sensory neuron cell bodies.
b. motor neuron cell bodies.
c. both sensory neuron and motor neuron cell bodies.
d. motor neuron fibers.
A
- a. sensory neuron cell bodies.
4
Q
- The phrenic nerve innervates the:
a. spleen.
b. diaphragm.
c. chest muscles.
d. none of the above.
A
- b. diaphragm.
5
Q
- The femoral nerve arises from the:
a. lumbar plexus.
b. sacral plexus.
c. coccygeal plexus.
d. brachial plexus.
A
- a. lumbar plexus.
6
Q
- ______ The lower end of the spinal cord is called the cauda equina.
True or False
A
- True
7
Q
- ______ There are 31 pairs of spinal nerves, all of which are composed of both motor and sensory fibers.
True or False
A
- True
8
Q
- ______ Herpes zoster is a unique bacterial infection that almost always affects the skin of a single dermatome.
True or False
A
- False
9
Q
- ______ Dermatome is a term referring to a skeletal muscle group innervated by motor neuron axons from a given spinal nerve.
True or False
A
- False
10
Q
- ______ The brachial plexus is found deep within the shoulder.
True or False
A
- True
11
Q
- Somatic effectors are:
a. smooth muscle.
b. skeletal muscle.
c. cardiac muscle.
d. glands.
A
- b. skeletal muscle.
12
Q
- When the outer sole of the foot is stimulated, a normal infant will extend the great toe. This is called the:
a. Babinski reflex.
b. plantar reflex.
c. tendon reflex.
d. corneal reflex.
A
- a. Babinski reflex.
13
Q
- Which is the neurotransmitter in a somatic motor pathway?
a. acetylcholine
b. amines
c. amino acids
d. neuropeptides
A
- a. acetylcholine
14
Q
Applying What You Know!
- Ethan had difficulty swallowing and he noticed his mouth was extremely dry. The doctor advised him that the problem may be related to a nerve.
Question a. What two nerves might possibly be causing the problem?
Question b. These nerves are mixed nerves. What is meant by that statement?
A
- (a) The two nerves that might possibly be involved are cranial nerve IX (glossopharyngeal) and cranial nerve X (vagus).
(b) Both nerves are mixed, meaning that they contain axons of sensory and motor neurons.
15
Q
Applying What You Know!
- Mason is under great stress from trying to advance in his career, pursue graduate school, and raise two small children. After a particularly stressful event, he noticed a burning sensation in his axillary and pectoral regions. Days later he experienced an eruption of red swollen plaques in the same area.
Question a. What condition is he experiencing?
Question b. What is the name of the responsible pathogen?
Question c. Why did he experience the symptoms that he did?
Question d. What may be the reason that the pathogen was capable of breaching his immune system?
A
- (a) Herpes zoster, or shingles.
(b) Varicella zoster virus, or chickenpox.
(c) It attacks a dermatome (T-4) and symptoms occur in that region.
(d) His immunologic protective mechanism may have become diminished due to the stress.
16
Q
- Which one of the following doesn’t have a sensory function?
a. abducens
b. trigeminal
c. facial
d. vagus
A
- a. abducens
