Match each description to its correct term.
-a mesh of cytoskeletal elements that attach the sarcomere to its surrounding components
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

Question

Quizplus · Accepted Answer

The mesh of cytoskeletal elements that attach the sarcomere to its surrounding components is called the Z line.

Answer: D
 Actin is a thin filament that is important in the contraction of muscles.

Answer: G
 Myofibrils are the specialized fibers found in muscle cells that contain sarcomeres and are responsible for muscle contraction.

Answer: I
 Thick filaments are composed of the protein myosin and are responsible for muscle contraction.

Answer: J
 Myosin is a protein found in thick filaments and is responsible for muscle contraction.

Answer: K
 A sphincter is a ring-like muscle that controls the opening and closing of a bodily passage, such as the anus or the opening of the stomach into the small intestine.

Match Each Description to Its Correct Term