Which of the following terms identifies the point of contact between the nerve ending and the muscle fiber?
Insertion site
Origin site
Neuromuscular junction
interneuron
The Correct Answer is C
a: Insertion site - This refers to the attachment point of a muscle tendon to a bone, not the point of contact between nerve and muscle.
b: Origin site - This refers to the attachment point of a muscle tendon to a stationary bone, not the neuromuscular junction.
c. Neuromuscular junction: The neuromuscular junction is the specialized synapse between a motor neuron and a muscle fiber. It is where the nerve impulse is transmitted from the motor neuron to the muscle fiber, resulting in muscle contraction
d: Interneuron - Interneurons are neurons that transmit signals between other neurons; they are not directly involved in the neuromuscular junction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
a. Sebaceous: Sebaceous glands are located near hair follicles and produce sebum, an oily substance that lubricates the hair and skin, preventing dryness and keeping it supple.
b. Eccrine: Eccrine glands are sweat glands located throughout the skin and help regulate body temperature through sweating.
c. Ceruminous: Ceruminous glands are located in the ear canal and produce cerumen (earwax) which protects the inner ear from dust, debris, and insects.
d. Apocrine: Apocrine glands are sweat glands located in areas like the armpits and groin. They produce a thicker sweat that takes on an odor when broken down by bacteria.
Correct Answer is D
Explanation
a. Blood clot formation: This is one of the later stages of hemostasis, involving the formation of a fibrin clot to seal the wound.
b. Platelet aggregation: This occurs after the initial vasoconstriction and is part of the platelet plug formation phase.
c. Activation of prothrombin: This occurs in the coagulation phase where prothrombin is converted to thrombin, leading to the formation of a fibrin clot.
d. Constriction of smooth muscle in blood vessels: This is the first response, known as vascular spasm or vasoconstriction, which reduces blood flow to the area and minimizes blood loss.
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