Emma, a 25-year-old athlete, undergoes a physical exam. During deep inspiration, which muscle is primarily responsible for increasing the vertical dimensions of her thoracic cavity?
Transversus thoracis
Internal intercostals
Diaphragm
External intercostals
The Correct Answer is C
A. Transversus thoracis is involved in expiration rather than inspiration.
B. Internal intercostals primarily aid in forced expiration.
C. The diaphragm contracts and moves downward during inspiration, increasing the vertical dimensions of the thoracic cavity and allowing air to enter the lungs.
D. External intercostals help elevate the ribs during inspiration but do not contribute significantly to increasing the vertical dimensions of the thoracic cavity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Wearing sunglasses is not relevant to the side effects or precautions associated with ciprofloxacin.
B. Ciprofloxacin does not cause artificial tanning.
C. Ciprofloxacin can increase sensitivity to sunlight, leading to sunburn. Using sunscreen with a high SPF can help prevent sunburn while taking this medication.
D. Sun exposure does not typically affect the effectiveness of ciprofloxacin, but it can increase the risk of sunburn due to photosensitivity.
Correct Answer is B
Explanation
A. Lithotomy position requires the patient to lie on his back with his legs raised and spread apart, which may be difficult for a nonambulatory patient and may cause pressure on his lower back and pelvis.
B. This position allows for easy access to the rectum and prostate without causing discomfort or strain to the patient or examiner. The patient lies on his left side with his right leg flexed at the hip and knee and his left leg slightly flexed at the hip and straight at the knee.
C. Bent forward with hips flexed requires the patient to stand up and lean over a table or chair, which may also be challenging for a nonambulatory patient and may cause dizziness or loss of balance.
D. Standing position requires the patient to stand up straight with his feet apart, which may not provide adequate exposure or comfort for the examination.
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