Pacemaker Activity That Establishes the Rhythmicity of Breathing Resides in the

question 67

Multiple Choice

Pacemaker activity that establishes the rhythmicity of breathing resides in the

• A) lung tissue.
• B) respiratory muscles.
• C) Pre-Botzinger complex
• D) phrenic nerve.
• E) reciprocal relationship between the inspiratory and expiratory neurons of the ventral respiratory group.

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Definitions:

Intrinsic Factor

A protein produced by cells in the stomach lining that is essential for the absorption of vitamin B12 in the small intestine.

Pepsinogen

is the inactive form of pepsin, an enzyme in the stomach that breaks down proteins in food.

Stomach

A digestive organ in the gastrointestinal tract that plays a key role in digestion by secreting stomach acids and enzymes.

Gastric Motility

The movements of the stomach muscles that mix and propel contents through the digestive system.