Match each term with its corresponding definition or description.
-The ability of a muscle to stretch

Question

Quizplus · Accepted Answer

Extensibility refers to the ability of a muscle to stretch.

Answer: A 
 Actin is a protein that forms the thin filaments in muscle cells.

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

Answer: D 
 Tropomyosin is a protein that is part of the thin filaments in muscle cells and helps regulate muscle contraction.

Answer: F 
 Myosin is a motor protein that forms the thick filaments in muscle cells.

Answer: G 
 T-tubules are invaginations of the sarcolemma that allow for the spread 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 a nerve impulse.

Answer: I 
 Sarcomeres are the functional units of muscle tissue and are composed of repeating units of actin and myosin filaments.

Answer: J 
 Troponin is a protein that is part of the thin filaments in muscle cells and helps regulate muscle contraction.

Answer: K 
 A motor unit consists of a motor neuron and the muscle fibers it innervates.

Match Each Term with Its Corresponding Definition or Description