Coordination in Life Processes — Flashcards

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Coordination in life processes means different organs and systems working together in a proper order so that the body can function smoothly. For example, digestion needs the mouth, stomach, intestines…

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A fall in blood glucose level triggers hunger pangs. The stomach starts emptying, ghrelin is secreted, and hunger signals reach the brain. This creates the sensation of hunger and motivates food intak…

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Ghrelin is a hunger-stimulating hormone secreted from certain cells in the wall of the stomach when the stomach is empty. It causes hunger pangs and increases the desire to eat.

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Leptin is a hunger-suppressing hormone secreted when the stomach is full. It reduces the feeling of hunger and tells the body that food is no longer needed immediately.

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The diencephalon in the forebrain and the vagus nerve, which is the 10th cranial nerve, help carry hunger signals from the stomach to the brain.

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The vagus nerve, also called the 10th cranial nerve, carries hunger signals from the stomach to the brain. It also controls muscular contractions during belching under the autonomic nervous system.

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The 5th cranial nerve controls the movement of muscles in the jaw during mastication. It helps in chewing food properly before swallowing.

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Mastication is the process of chewing food in the mouth. It involves the surface muscles of the jaw, which move the jaw up, down, forward, and backward to break food into small pieces.