We are experiencing high call volumes regarding COVID vaccination scheduling. Vaccine supplies are limited. Please do not call St. Luke’s clinics directly about COVID-19 vaccination. We have a new COVID vaccine registry; fill out a questionnaire in myChart if you wish to be vaccinated. We will reach out when appointments are open for you. We cannot accommodate walk-ins. Unless you need to call for an emergency, please use myChart for questions and appointments. Learn more.
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The small intestine is a winding, tightly folded tube about 20 ft (6 m) long in adults. It connects to the stomach on the top end and to the large intestine (colon) on the bottom end. Most of the food a person consumes is digested and absorbed in the small intestine. The lining of the small intestine has tiny, finger-shaped tissues (villi). These raised tissues greatly increase the surface area of the intestine, which absorbs calories and nutrients from food.
The small intestine consists of three parts. The first part, called the duodenum, connects to the stomach. The middle part is the jejunum. The third part, called the ileum, attaches to the colon.
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