With Negative Pressure Breathing,the Muscles That Move the Ribs and Diaphragm

question 15

Multiple Choice

With negative pressure breathing,the muscles that move the ribs and diaphragm are distant from the absorptive alveolar surfaces.What difficulty(ies) could occur if the muscles were around each alveolus and had to expand each alveolus to suck in air?

• A)Muscle tissue would get in the way of absorption of gases across the air-to-capillary border.
• B)Interspersed muscle tissue would take up much space and the lung-muscle volume would have to be much larger.
• C)Since muscle cells only contract and relax,it would be difficult for a few cells to cause alveolar expansion.
• D)Adding a third tissue to the intimate alveolar-capillary complex would increase the problems with disorders and diseases.
• E)All of the choices are correct.

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Definitions:

Innervated

Supplied with nerves; often refers to how certain body parts receive nerve signals from the brain or spinal cord.

Abdominal Obesity

The accumulation of excess fat around the stomach and abdomen, posing significant health risks.

Catecholamines

Organic compounds that play a critical role as hormones or neurotransmitters in the body's stress response and help regulate heart rate, blood pressure, and blood sugar levels.

Cortisol

A hormone produced by the adrenal glands that regulates metabolism and the immune response, and is often associated with stress.