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ATI LPN · Anatomy and Physiology · Multiple Choice Questions Muscular System

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

A collection of similar tissues that performs a specific function is an

A. organ

B. organelle

C. organism

D. organ system

Correct Answer: organ

Question 2 of 5

Which of the following muscles is NOT named after its location in the body?

A. biceps brachii

B. sternocleidomastoid

C. rectus abdominus

D. flexor carpi radialis

Correct Answer: sternocleidomastoid

Question 3 of 5

An injection of fluid directed into a muscle.

A. dileguilist

B. prime mover

C. intramuscular (IM) injection

D. fixators

Correct Answer: intramuscular (IM) injection

Question 4 of 5

The neurotransmitter that excites the muscle fiber is

A. GABA

B. NaÃ¢ÂÂº

C. CaÃ‚Â²Ã¢ÂÂº

D. Ach

Correct Answer: Ach

Question 5 of 5

A continuous, sustained contraction that shows no relaxation is called

A. complete tetanus

B. twitch

C. incomplete tetanus

D. wave summation

Correct Answer: complete tetanus