Complete Question Bank

ATI LPN · Anatomy and Physiology · Questions for Muscular System

Full Question & Rationale Repository

Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

When preparing a patient for electromyography (EMG), the nurse will instruct the patient to:

A. cease smoking for 12 hours before the test

B. refrain from caffeine drinks for 3 hours before the test

C. take muscle relaxants before the test

D. prepare for a lengthy testing time (usually about 2 hours)

Correct Answer: refrain from caffeine drinks for 3 hours before the test

Question 2 of 5

What type of epithelium is found in the lining of the esophagus?

A. Simple cuboidal

B. Stratified squamous

C. Simple columnar

D. Transitional

Correct Answer: Stratified squamous

Question 3 of 5

What shortens the sarcomere during muscle contraction?

A. The binding of acetylcholine at the neuromuscular junction

B. The myosin heads binding to actin filaments and pulling them toward the center of the A-band

C. The release of calcium ions from the sarcoplasmic reticulum

D. The breakdown of ATP by the sarcoplasmic reticulum

Correct Answer: The myosin heads binding to actin filaments and pulling them toward the center of the A-band

Question 4 of 5

Which muscle extends the forearm?

A. biceps brachii

B. triceps brachii

C. brachialis

D. deltoid

Correct Answer: triceps brachii

Question 5 of 5

What characteristic of a smooth muscle cell distinguishes it from cardiac and from skeletal muscle?

A. being branched

B. being under involuntary control

C. lack of striations

D. being uninucleate

Correct Answer: lack of striations

Ready to Guarantee Your Result?

Start Your ATI LPN Preparation Journey Today

Access over 300,000 verified practice questions, comprehensive subject diagnostic exams, and timed clinical simulations engineered for success.