Exercise Improves Physical Fitness by Contributing to All of the Following

question 51

Multiple Choice

Exercise improves physical fitness by contributing to all of the following except

• A)increased bone strength.
• B)increased heart and lung function.
• C)increased cholesterol.
• D)lower blood pressure.

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Definitions:

Inferior Vena Cava

The largest vein in the human body, which carries deoxygenated blood from the lower and middle body into the right atrium of the heart.

Pulmonary Vein

A vascular channel that transports blood enriched with oxygen from the lungs to the heart's left atrium.

Intercalated Disc

Specialized connections between cardiac muscle cells containing gap junctions and desmosomes, facilitating unified contractions of the cardiac tissue.

Cardiac Muscle Fiber

A type of involuntary striated muscle found in the walls of the heart, enabling it to contract and pump blood throughout the body.