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Question
Peristaltic movements found in different parts of alimentary canal. In which one of these there is least peristalsis?
Peristaltic movements found in different parts of alimentary canal. In which one of these there is least peristalsis?
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Solution
The correct option is C Rectum
Peristalsis is the series of involuntary movements in the digestive tract. It is characterized by waves of alternate circular contraction and relaxation of the longitudinal smooth muscle of tube by which the contents are propelled onward. Medulla is responsible for the peristaltic movement of food. Muscle contraction also mixes food with the digestive juices. They also act as valves preventing back flow in the tract. The control allows time for digestion and absorption to take place. The rectum is a slightly dilated section of the colon about 13 cm long. It leads from the sigmoid colon and terminates in the anal canal. The large intestine does not exhibit peristaltic movement as it is seen in other parts of the digestive tract.
Peristalsis is the series of involuntary movements in the digestive tract. It is characterized by waves of alternate circular contraction and relaxation of the longitudinal smooth muscle of tube by which the contents are propelled onward. Medulla is responsible for the peristaltic movement of food. Muscle contraction also mixes food with the digestive juices. They also act as valves preventing back flow in the tract. The control allows time for digestion and absorption to take place. The rectum is a slightly dilated section of the colon about 13 cm long. It leads from the sigmoid colon and terminates in the anal canal. The large intestine does not exhibit peristaltic movement as it is seen in other parts of the digestive tract.
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