ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
A 40 year old man suffered a whiplash injury to his neck and now complains of pain along the lateral aspect of his left forearm, and there is weakness of his left biceps. What is the most likely cause of his symptoms?
Correct Answer: C
Rationale: C6 root (C5-C6 disc prolapse) supplies the lateral forearm (dermatome) and biceps (myotome via musculocutaneous nerve). C5 affects shoulder, C7 the middle finger, and C4 is higher.
Question 2 of 5
The infratrochlear nerve supplies the
Correct Answer: C
Rationale: The infratrochlear nerve (V1) supplies sensation to the bridge of the nose and medial eyelid.
Question 3 of 5
The fifth cranial nerve supplies
Correct Answer: A
Rationale: The trigeminal nerve (CN V) supplies the temporalis (V3 motor). The external nasal is V1, earlobe is C2-C3, and occiput is C2.
Question 4 of 5
The human nervous system is capable of a wide range of functions. What is the basic unit of the nervous system?
Correct Answer: C
Rationale: The neuron is the basic functional unit of the nervous system, responsible for transmitting signals. Glial cells support neurons, meninges protect the CNS, and cerebrospinal fluid cushions it, but only neurons conduct electrical impulses.
Question 5 of 5
Certain metabolic diseases can affect the nervous system. For instance, people with diabetes can develop a nervous system problem called diabetic neuropathy. What are the symptoms of diabetic neuropathy?
Correct Answer: D
Rationale: Diabetic neuropathy (peripheral nerve damage from diabetes) can cause constipation/diarrhea (autonomic), rapid heartbeat (autonomic), and pain in feet (sensory). 'All of the above' encompasses these common symptoms.