Nokea
Cell bodies for the motor supply of the trigeminal nerve lie
- A. Hypothalamus
- B. Midbrain
- C. Posterior to cerebral aqueduct
- D. Cerebral cortex
Correct Answer: B
Rationale: The motor nucleus of the trigeminal nerve is located in the midbrain. It supplies muscles of mastication, such as the masseter and temporalis.
You may also like to solve these questions
One of the most important functions of the autonomic nervous system is the following:
- A. regulation of homeostasis
- B. voluntary movements
- C. coordination of movements
- D. involuntary movements
Correct Answer: A
Rationale: Regulation of homeostasis is the correct answer because the autonomic nervous system controls vital functions such as heart rate, blood pressure, digestion, and temperature regulation. These processes are essential for maintaining the body's internal balance and ensuring survival.
A drug is called an agonist if it ________.
- A. blocks a receptor
- B. interferes with neurotransmitter reuptake
- C. acts like the endogenous neurotransmitter by binding to its receptor
- D. blocks the voltage-gated calcium ion channel
Correct Answer: C
Rationale: The correct answer is C because an agonist mimics the action of the endogenous neurotransmitter by binding to its receptor. This leads to activation of the receptor and physiological response. Choice A is incorrect as an agonist does not block a receptor. Choice B is incorrect as it describes a reuptake inhibitor, not an agonist. Choice D is incorrect as it refers to a calcium channel blocker, not an agonist. In conclusion, an agonist activates a receptor by binding to it, unlike the other choices which describe different mechanisms of action.
The area of the nervous system that is responsible for mediating reflexes is the:
- A. Medulla.
- B. Cerebellum.
- C. Spinal cord.
- D. Cerebral cortex.
Correct Answer: C
Rationale: The correct answer is C: Spinal cord. The spinal cord is responsible for mediating reflexes due to its role in transmitting sensory information to the brain and coordinating motor responses without involving higher brain centers. Reflex actions are quick, involuntary responses to stimuli that help protect the body. The medulla (A) controls vital functions like breathing and heartbeat, the cerebellum (B) coordinates movement and balance, and the cerebral cortex (D) is involved in higher cognitive functions like thinking and decision-making, but not reflex actions.
You are providing care for a patient with an acute hemorrhagic stroke. The patient's husband has been reading a lot about strokes and asks why his wife did not receive alteplase. What is your best response?
- A. Your wife was not admitted within the time frame that alteplase is usually given.
- B. This drug is used primarily for patients who experience an acute heart attack.
- C. Alteplase dissolves clots and may cause more bleeding into your wife's brain.
- D. Your wife had gallbladder surgery just 6 months ago and this prevents the use of alteplase.
Correct Answer: C
Rationale: Alteplase increases the risk of bleeding, making it contraindicated in hemorrhagic stroke.
What is the major focus for care today for a patient who is 1 day post-operative after a left below-the-knee amputation?
- A. To attain pain control for phantom pain.
- B. To monitor for signs of sufficient tissue perfusion.
- C. To assist the patient to ambulate as soon as possible.
- D. To elevate the residual limb when the patient is supine.
Correct Answer: B
Rationale: Ensuring adequate tissue perfusion is critical in the immediate post-operative period to prevent complications.