The terms inversion and eversion pertain to the:
Arms only
Hands only
Feet only
Hands and feet
Neck only
The Correct Answer is C
Choice A reason: Arms do not perform inversion or eversion. Their movements include flexion, extension, abduction, and rotation, but not these specific terms.
Choice B reason: Hands perform movements such as flexion, extension, abduction, adduction, and opposition, but inversion and eversion are not applicable.
Choice C reason: Feet only is the correct answer. Inversion refers to turning the sole of the foot inward, while eversion refers to turning it outward. These movements occur at the subtalar joint and are essential for balance and gait.
Choice D reason: Hands and feet is incorrect because inversion and eversion are exclusive to the feet. Hands do not perform these motions.
Choice E reason: The neck performs flexion, extension, rotation, and lateral bending, but inversion and eversion are not associated with cervical movement.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Cross bridges are formed between actin and myosin during contraction. T tubules do not hold them in place; their role is electrical, not structural.
Choice B reason: While T tubules are embedded in the muscle fiber, their function is not to provide structural support. That role is fulfilled by connective tissues like endomysium and cytoskeletal proteins.
Choice C reason: G and F actin are stabilized by proteins like tropomyosin and nebulin, not T tubules. T tubules are involved in electrical signaling.
Choice D reason: This is the correct answer. T tubules are invaginations of the sarcolemma that conduct action potentials deep into the muscle fiber. This ensures that the signal for contraction reaches all parts of the muscle simultaneously, triggering calcium release from the sarcoplasmic reticulum.
Choice E reason: Glucose synthesis occurs in the liver and other tissues via gluconeogenesis. Muscle cells use glucose for energy but do not synthesize it through T tubules.
Correct Answer is B
Explanation
acromion is a projection of another bone.
Choice B reason: The scapula is the correct answer. The acromion is a bony process on the scapula that extends laterally over the shoulder joint and articulates with the clavicle to form the acromioclavicular joint.
Choice C reason: The ulna is a forearm bone and does not have an acromion. It forms part of the elbow joint.
Choice D reason: The scaphoid is a carpal bone in the wrist and is unrelated to the shoulder girdle or the acromion.
Choice E reason: The pollex refers to the thumb and is not associated with the acromion or shoulder anatomy.
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