Which of the Following Statements Regarding Skeletal-Muscle Contraction Is True

question 76

Multiple Choice

Which of the following statements regarding skeletal-muscle contraction is true?

• A)The tension developed during the contraction of a muscle fiber is dependent upon the initial length of the fiber
• B)There is a positive correlation between muscle-fiber length at the beginning of a contraction and the tension that can be developed by the fiber: the longer the fiber, the greater the tension
• C)There is a positive correlation between the frequency of action potentials in a single muscle fiber and the tension it can develop: the greater the frequency, the greater the tension, up to a plateau
• D)Both the tension developed during the contraction of a muscle fiber is dependent upon the initial length of the fiber and there is a positive correlation between muscle-fiber length at the beginning of a contraction and the tension that can be developed by the fiber: the longer the fiber, the greater the tension are true
• E)Both the tension developed during the contraction of a muscle fiber is dependent upon the initial length of the fiber and there is a positive correlation between the frequency of action potentials in a single muscle fiber and the tension it can develop: the greater the frequency, the greater the tension, up to a plateau are true

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Definitions:

Apocrine Glands

Sweat glands located mainly in the underarm and genital areas that release sweat when the body is under stress or emotional excitement.

Cilia

Microscopic, hair-like structures on the surface of cells, which move in a wave-like fashion to transport substances.

Cranial Nerves

Nerves that emerge directly from the brain, in contrast to spinal nerves, and are numbered from I to XII, each with specific functions related to senses and movement.

Organ of Corti

The sensory organ located within the cochlea of the inner ear, critical for the process of hearing by converting sound vibrations into neural signals.