Match each term with its corresponding definition or description.
-the ability of a muscle cell to be stimulated or excited
A)Actin
B)Sarcolemma
C)Contractility
D)Tropomyosin
E)Extensibility
F)Myosin
G)T-tubule
H)Irritability
I)Sarcomere
J)Troponin
K)Motor unit

Question

Quizplus · Accepted Answer

Irritability refers to the ability of a muscle cell to be stimulated or excited.

Answer: C
 Contractility refers to the ability of a muscle to generate force and shorten.

Answer: F
 Myosin is a protein that interacts with actin to generate force during muscle contraction.

Answer: B
 Sarcolemma is the cell membrane surrounding a muscle fiber.

Answer: E
 Extensibility refers to the ability of a muscle to be stretched or lengthened without being damaged.

Answer: J
 Troponin is a protein complex that regulates the interaction between actin and myosin during muscle contraction.

Answer: G
 T-tubules are invaginations of the sarcolemma that allow the action potential to penetrate deep into the muscle fiber.

Answer: A
 Actin is a protein that interacts with myosin to generate force during muscle contraction.

Answer: D
 Tropomyosin is a protein that regulates the interaction between actin and myosin during muscle contraction.

Answer: K
 A motor unit is a motor neuron and all the muscle fibers it innervates.

Match Each Term with Its Corresponding Definition or Description