The Sequence of Events Leading from the Nerve Impulse to Muscle

question 30

Multiple Choice

The sequence of events leading from the nerve impulse to muscle contraction is called _____________.

• A)excitatory muscle contraction
• B)depolarization of the T-tubules
• C)excitation-contraction coupling
• D)None of the above answers are correct

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Definitions:

Sarcomere

A segment of a striated muscle cell located between adjacent Z lines that serves as a unit of contraction.

Exoskeleton

An exoskeleton is a rigid external covering for the body in some invertebrate animals, especially arthropods, providing protection and support for the organism.

Gastrovascular Cavity

A gastrovascular cavity is a single internal cavity in certain simple animals that acts both in digestion and the distribution of nutrients.

Pedal Disk

The base of a cnidarian, such as a sea anemone or coral, that attaches to a substrate.