Nokea
Lobe that contains the primary motor area that enables voluntary control of skeletal muscle movements:
- A. parietal lobe
- B. temporal lobe
- C. occipital lobe
- D. frontal lobe
Correct Answer: D
Rationale: The frontal lobe contains the primary motor cortex, which is responsible for voluntary control of skeletal muscle movements. The parietal, temporal, and occipital lobes have different functions, and the diencephalon is not a lobe. Thus, D is the correct answer.
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Acetylcholine and norepinephrine are two well-known _________.
- A. postsynaptic receptors
- B. enzymes that rapidly inactivate neurotransmitters
- C. drugs of abuse
- D. neurotransmitters
Correct Answer: D
Rationale: Acetylcholine and norepinephrine are two well-known neurotransmitters that play critical roles in the nervous system. Acetylcholine is involved in muscle contraction, memory, and learning, while norepinephrine regulates attention, arousal, and stress responses. These neurotransmitters bind to specific receptors on postsynaptic neurons, triggering electrical signals that propagate neural communication. Their proper functioning is essential for normal brain and body activities.
A patient arrives in the ER with blurred and double vision, muscle weakness, and intolerance of temperature changes. The physician suspects multiple sclerosis. What test would you expect the physician to do in order to confirm his or her suspicions?
- A. CBC with a very low WBC count.
- B. MRI with gadolinium showing demyelination of nerve fibers.
- C. Endocrine function study with a low growth hormone and high T3 and T4.
- D. Fasting glucose test with a result over 300 mg/dL.
Correct Answer: B
Rationale: MRI with gadolinium is used to identify demyelination, which is characteristic of multiple sclerosis.
What important information should you provide to a post-operative CTS patient for discharge?
- A. The surgical procedure is a cure for CTS.
- B. Hand movements will be restricted for 4€”6 weeks after surgery.
- C. Frequent pain medication dosages will no longer be necessary.
- D. Notify the physician immediately for any pain or discomfort.
Correct Answer: B
Rationale: Restriction of hand movements is necessary for proper healing.
The poison curare is a(n) ________ for the neurotransmitter acetylcholine.
- A. antagonist
- B. protagonist
- C. agonist
- D. cure
Correct Answer: A
Rationale: Curare is an antagonist for the neurotransmitter acetylcholine, meaning it blocks acetylcholine receptors at the neuromuscular junction. This prevents acetylcholine from binding to its receptors and initiating muscle contraction, leading to paralysis. Curare has been used historically as a poison and in medical procedures to induce muscle relaxation. Its action highlights the importance of acetylcholine in muscle function and the effects of receptor blockade.
Which of the following measures should the nurse strongly recommend to a client recovering from a ruptured Achilles tendon to help regain mobility, strength, and the full range of motion?
- A. Regular use of NSAIDs
- B. Vigorous exercise
- C. Physical therapy
- D. Non-medical interventions, such as yoga
Correct Answer: C
Rationale: Physical therapy is essential for restoring function after tendon injuries.