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
Explanation
Step 1 is to calculate the rate of fluid replacement. The formula for this is: Rate (mL/hr) = Total volume (mL) ÷ Time (hr) So, for this question: Rate (mL/hr) = 1000 mL ÷ 10 hr = 100 mL/hr.
Correct Answer is C
Explanation
Choice A rationale
Minimal assistance implies that the patient needs some help but can do most of the task on their own. In this case, the patient is able to stand up from a seated position using a cane for support, which suggests that they do not need assistance.
Choice B rationale
Moderate assistance implies that the patient needs more help to perform the task. The patient in the scenario is able to perform the task independently with the help of a cane.
Choice C rationale
No assistance means that the patient can perform the task independently. This is the most fitting answer because the patient is able to stand up from a seated position using a cane for support.
Choice D rationale
Maximum assistance implies that the patient is unable to perform the task without substantial help. This does not apply to the patient in the scenario as they are able to stand up independently with the help of a cane.
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