Ring of Muscle That Controls the Opening of a Tubular

Question

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

Accepted Answer

A sphincter is a ring of muscle that controls the opening of a tubular organ.

Answer: H
 Smooth muscle is a type of muscle tissue that includes sphincters and is responsible for involuntary movement in organs like the intestines and blood vessels.

Answer: K
 A sphincter is a ring of muscle that controls the opening of a tubular organ.

Answer: J
 Myosin is a protein involved in muscle contraction and is found in thick filaments in muscle cells.

Answer: K
 A sphincter is a ring of muscle that controls the opening of a tubular organ.