Of the Steps in Excitation-Contraction Below, Which Occurs Before the Others

question 43

Multiple Choice

Of the steps in excitation-contraction below, which occurs before the others?

• A) Exposed actin sites bind with myosin cross bridges.
• B) Sodium channels open in the fiber's membrane.
• C) Calcium is released from the sarcoplasmic reticulum.
• D) Troponin binds calcium.
• E) Attachment of ATP allows for cross bridge detachment.

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Definitions:

René Descartes

A French philosopher, mathematician, and scientist in the 17th century, known for his statement "Cogito, ergo sum" ("I think, therefore I am") and his contributions to the development of modern philosophy and analytical geometry.

Norman Cousins

An American political journalist, author, and professor known for his research on the biochemistry of human emotions and its effect on health.

Daniel David Palmer

The founder of chiropractic care, recognized for developing a system of treatment focused on the manipulation of the spine.

Alternative Medicines

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