Match each term with its corresponding definition or description.
-name given to the plasma membrane of a muscle cell
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

Sarcolemma is the name given to the plasma membrane of a muscle cell.

Answer: C
 Contractility refers to the ability of a muscle to contract forcefully when stimulated by an action potential.

Answer: G
 T-tubules are invaginations of the sarcolemma that allow for the propagation of action potentials deep into the muscle fiber.

Answer: H
 Irritability refers to the ability of a muscle to respond to a stimulus such as an action potential.

Answer: I
 Sarcomere is the basic unit of muscle contraction, consisting of actin and myosin filaments arranged in a repeating pattern.

Answer: J
 Troponin is a regulatory protein that binds to calcium ions and controls the interaction between actin and myosin filaments during muscle contraction.

Answer: K
 Motor unit consists of a single motor neuron and all the muscle fibers it innervates, which work together to produce muscle contractions.

Match Each Term with Its Corresponding Definition or Description