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 ["A","B","D","E"]
Explanation
Choice A rationale
As people age, the stiffness of the arterial system increases, leading to left ventricle hypertrophy, increased afterload on the left ventricle, and an increase in systolic blood pressure. This is a physiological change that occurs with aging.
Choice B rationale
With aging, the number of cells in the kidneys decreases markedly, which can affect the functioning of the urinary tract, including the bladder. This can lead to a reduced bladder capacity.
Choice C rationale
This statement is incorrect. As people age, they often experience a decrease in visual acuity and an increased sensitivity to glare. This can make it more difficult for older adults to see, especially in brightly lit environments.
Choice D rationale
Dehydration of intervertebral discs is a common occurrence with aging. This can lead to a decrease in height and changes in the curvature of the spine.
Choice E rationale
As people age, their cough reflex can become reduced. This can increase the risk of aspiration and pneumonia, especially in individuals with other health conditions that affect swallowing.
Correct Answer is C
Explanation
Choice A rationale
A wrist fracture is a physical stressor, not a psychological one. It involves damage to the body’s structures.
Choice B rationale
A burn injury, like a wrist fracture, is a physical stressor. It involves physical harm to the body.
Choice C rationale
Financial difficulties are a type of psychological stressor. They involve challenges and worries related to money, which can cause mental and emotional stress.
Choice D rationale
Hypothermia is a physical stressor. It involves a dangerously low body temperature and is a medical emergency.
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