The Following Events Are Associated with Muscle Contraction

question 77

Multiple Choice

The following events are associated with muscle contraction. Which one of the following best describes the order in which these events occur, following the initiation of a contraction by a nerve impulse?
1) T tubules transmit electrical impulses throughout the muscle cell.
2) Myosin contacts actin and pulls it toward the center of the sarcomere.
3) Acetylcholine binds to receptors on the muscle.
4) Troponin-tropomyosin complex shifts to expose myosin binding sites.
5) Calcium is released from the sarcoplasmic reticulum.

• A) 3, 1, 5, 4, 2
• B) 1, 3, 5, 2, 4
• C) 3, 5, 1, 2, 4
• D) 4, 2, 1, 3, 5
• E) 3, 5, 1, 4, 2

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Budget Line

An illustration showing all the potential combinations of two products that someone can buy, considering their wealth and the price points of the items.

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The percentage at which an individual or corporation is taxed on their income or profits.

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A representation in economics that maps a set of goods and services into a level of utility or satisfaction.

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