Question

what is a primary factor that determines the speed of stomach emptying after a meal?
(1 point)

the length of the persons small intestine.

the total amount of saliva produced in the mouth.

the activation of receptors from a large meal.

the number of vitamins present in the food.

Explanation:

To determine the primary factor for stomach emptying speed:

• The length of the small intestine (first option) is not a direct factor for stomach emptying speed; it relates more to nutrient absorption later.
• Saliva production (second option) occurs in the mouth and is for initial digestion, not stomach emptying.
• Receptors activated by a large meal (third option) sense the volume/contents of the stomach, triggering signals that regulate how quickly the stomach empties to ensure the small intestine can handle the chyme.
• The number of vitamins (fourth option) in food does not directly influence stomach emptying speed.

Answer:

C. The activation of receptors from a large meal.