How Would a Calcium Deficiency Affect the Process of Skeletal

question 6

Multiple Choice

How would a calcium deficiency affect the process of skeletal muscle contraction?

• A) Myosin heads would not bind to actin efficiently.
• B) Skeletal muscles would not be able to utilize ATP as a source of fuel.
• C) The myosin heads would remain attached to actin molecules.
• D) The action potential would be blocked from entering the muscle fiber.

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Definitions:

Thoracic Cavity

The part of the body located between the neck and the abdomen, housing the heart and lungs within the rib cage.

Spiracle

An external respiratory opening found in some animals, including insects and some amphibians, used for breathing.

Partial Pressure

The pressure exerted by a single component of a mixture of gases, proportionate to its percentage in the mixture.

Pulmonary Capillaries

Tiny blood vessels in the lungs where gas exchange between the air and blood occurs.