Describe Two Central Reflexes Triggered by Stimulation of the Stretch

question 250

Multiple Choice

Describe two central reflexes triggered by stimulation of the stretch receptors in the stomach wall.

• A)The cephalic reflex opens the esophagus during swallowing and the gastric reflex opens the cardiac sphincter.
• B)The gastric reflex opens the cardiac sphincter and the enteric reflex opens the pyloric sphincter.
• C)The enterogastric reflex closes the pyloric sphincter and the gastroenteric reflex stimulates motility and secretion in the small intestine.
• D)The gastroenteric reflex stimulates motility and secretion in the small intestine and the gastroileal reflex opens the ileocecal valve.
• E)The gastroileal reflex opens the ileocecal valve and the colonic reflex closes the ileocecal valve.

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Definitions:

Sensory Threshold

The minimum level of stimulus intensity needed to detect a stimulus or cause a sensory response.

Method of Incremented Stimuli

A technique in psychophysical research where stimuli are gradually increased in intensity to determine the threshold at which a sensation is detected.

Opponent-Process Theory

The Opponent-Process Theory is a psychological and neurological model that explains how the perception of colors is controlled by the operation of opposing neural systems.

Trichromatic Theory

A theory of color vision that proposes three types of color receptor cells in the eye, corresponding to three primary colors.