A nurse is teaching a class about skeletal muscles.
Which of the following should the nurse identify as a function of skeletal muscles?
Skeletal muscles enable the heart to contract with each heartbeat
Skeletal muscles enable the bladder to contract during voiding
Skeletal muscles enable the bronchioles to dilate in the lungs
Skeletal muscles enable a hand to contract and form a fist
Skeletal muscles enable a hand to contract and form a fist
The Correct Answer is D
Choice A rationale
Skeletal muscles do not enable the heart to contract with each heartbeat. The heart has its own specialized muscle tissue known as cardiac muscle, which allows it to contract and pump blood throughout the body.
Choice B rationale
Skeletal muscles do not enable the bladder to contract during voiding. The detrusor muscle, a smooth muscle found in the wall of the bladder, contracts during urination to expel urine from the body.
Choice C rationale
Skeletal muscles do not enable the bronchioles to dilate in the lungs. The dilation and constriction of the bronchioles are controlled by the autonomic nervous system and the smooth muscles in the walls of the bronchioles.
Choice D rationale
Skeletal muscles do enable a hand to contract and form a fist. Skeletal muscles are responsible for all voluntary movements, including making a fist. When you want to make a fist, your brain sends a signal to the skeletal muscles in your hand and forearm, telling them to contract. This pulls on the tendons connected to your fingers, causing them to move and form a fist.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Academic pressure is a psychological stressor, not a physiological one. It involves mental or emotional strain or tension resulting from adverse or demanding circumstances, in this case, related to academic performance.
Choice B rationale
A burn injury is an example of a physiological stressor. Physiological stressors are related to physical or biological factors that strain the body’s resources. A burn injury places physical stress on the body as it tries to heal and recover.
Choice C rationale
Financial difficulties are a type of environmental stressor, not a physiological one. They involve external factors in a person’s environment that cause stress, such as financial problems or jobrelated stress.
Choice D rationale
A change in marital status is a type of psychosocial stressor, not a physiological one. It involves both psychological factors (such as emotions and behavior) and social factors (such as relationships and social interactions).
Correct Answer is A
Explanation
Choice A rationale
Before repositioning a patient, the nurse should first elevate the height of the patient’s bed. This allows the nurse to work at a comfortable height and reduces the risk of injury.
Choice B rationale
While tightening the abdominal muscles can help with lifting and moving, it is not the first action the nurse should take when preparing to reposition a patient.
Choice C rationale
Positioning the feet in line with the shoulders can provide a stable base of support when moving or lifting. However, this is not the first action the nurse should take when preparing to reposition a patient.
Choice D rationale
Pivoting the feet in the direction of the move can help with turning and moving. However, this is not the first action the nurse should take when preparing to reposition a patient.
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