MEDICAL
GALLBLADDER AND EXCRETORY SYSTEM OF THE LIVER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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absorption of nutrients
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movement of food to the stomach
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secretion of enzymes
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mechanical breakdown of food
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Detailed explanation-1: -Waves of muscle contractions called peristalsis (per-uh-STALL-sus) force food down through the esophagus to the stomach. A person usually isn’t aware of the muscle movements that push food through the digestive tract. The stomach: At the end of the esophagus is a muscular ring or valve called a sphincter (SFINK-ter).
Detailed explanation-2: -Peristalsis squeezes your esophageal muscles from top to bottom. This pushes food and liquid along. If you could see peristalsis, it would look like a wave passing down your esophagus. To keep food and liquids moving in the right direction, your digestive tract has special muscles along its course called sphincters.
Detailed explanation-3: -The main function of the esophagus is to propel swallowed food or fluid into the stomach. This occurs through sequential or “peristaltic” contraction of circular muscle in the esophageal body, in concert with appropriately timed relaxation of the upper and lower esophageal sphincters.