GENERAL HISTOLOGY

SMALL INTESTINE

BODY OF STOMACH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
On average, how long does it take for materials to pass from the duodenum to the end of the ileum?
A
4 hours
B
4.5 hours
C
3 hours
D
5 hours
Explanation: 

Detailed explanation-1: -It takes 3–5 hours from entry to the duodenum to exit from the ileum. The small intestine’s structure of folds, villi and microvilli increases the absorptive surface area and allows maximum exposure to enzymes and complete absorption of the end products of digestion.

Detailed explanation-2: -After you eat, it takes about six to eight hours for food to pass through your stomach and small intestine. Food then enters your large intestine (colon) for further digestion, absorption of water and, finally, elimination of undigested food.

Detailed explanation-3: -The duodenum is the shortest section, on average measuring from 20 cm to 25 cm in length. Its proximal end is connected to the antrum of the stomach, separated by the pylorus, and the distal end blends into the beginning of the jejunum.

Detailed explanation-4: -Normal Results The average transit time through the colon in someone who is not constipated is 30 to 40 hours. Up to a maximum of 72 hours is still considered normal, although transit time in women may reach up to around 100 hours.

Detailed explanation-5: -The normal range for transit time includes the following: gastric emptying (2 to 5 hours), small bowel transit (2 to 6 hours), colonic transit (10 to 59 hours), and whole gut transit (10 to 73 hours). Your digestion rate is also based on what you’ve eaten. Meat and fish can take as long as 2 days to fully digest.

There is 1 question to complete.