Multiple Choice
ring of muscle that controls the opening of a tubular organ
A) Z line
B) ATP
C) mitochondria
D) actin
E) sarcomeres
F) phosphate group
G) myofibrils
H) smooth muscle
I) thick filaments
J) myosin
K) Sphincter
Correct Answer:

Verified
Correct Answer:
Verified
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Q48: Figure 35.5<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2278/.jpg" alt="Figure 35.5
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