From < ? q=structures+of+the+small+intesine&view=detailv2&&id=E7E92C1A0A74BDEFE5C000B91EAEF4A2338AE52F&selectedIndex=12 0&ccid=OFBeNeSb&simid=608010904687804987&thid=OIP.M38505e35e49b183ebb7bc04cc3fefa8cH0&mode=overlay > B. Large intestine
1. Extends from the end of the small intestine to the anus. About twice as wide as the small intestine, but only 1/4 as long. Where the waste products of digestion are processed in preparation for excretion through the anus. Major parts include cecum, colon, rectum, and anus. 1. Cecum. Pouch that lies on the right side of the abdomen. Extends from the end of the ileum to the beginning of the colon. 1. Ileocecal sphincter - ring-like muscle that controls the flow from the ileum of the small intestine into the cecum of the large intestine. 2. Vermiform appendix (appendix) hangs from the lower portion of the cecum. (vermiform refers to a worm-like shape). Consists of lymphoid tissue. 1. Colon - longest portion of the large intestine, subdivided into 4 parts. 1. Ascending colon - travels upwards from the cecum to the undersurface of the liver (ascending means upwards). 2. Transverse colon - passes horizontally from right to left towards the spleen (transverse means across). 3. Descending colon - travels down the left side of the abdominal cavity to the sigmoid colon. 4. Sigmoid colon - S-shaped structure that continues from the descending colon above and joins with the rectum below. (Sigmoid means curved like the letter S). 3. Rectum - widest portion of the large intestine. Makes up the last 4 inches of the large intestine and ends at the anus. D. Anus - lower opening of the digestive tract. Flow of waste through the anus is controlled by the internal anal sphincter and the external anal sphincter. E. Anorectal refers to the anus and rectum as a single unit (ano/rect/al)
From < ? q=structures+of+the+large+intesine&view=detailv2&&id=28EF3D4C4488B88C7CBC3FD0F398CEA825986FC1&selectedIndex=5& ccid=87gCPYPM&simid=607996873040856699&thid=OIP.Mf3b8023d83cc2bec5b9b1ba3f575e34co0&mode=overlay > Accessory Digestive Organs So named because they play an important role in the digestive system, but are not part of the gastrointestinal tract. A. The Liver A. Large organ located in the right upper quadrant of the abdomen. B. Important functions related to removing toxins from the blood and turning food into fuel and nutrients the body needs. C. Hepatic, pertaining to the liver (hepat - liver, ic - pertaining to).
A. Removes excess glucose, commonly known as blood sugar from the bloodstream and stores it as glycogen, which is a form of starch. When the blood sugar is low, liver converts glycogen back to glucose and releases it for use by the body. B. Destroys old erythrocytes (red blood cells), removes toxins from the blood, and manufactures some blood proteins. Bilirubin - pigment produced from the destruction of hemoglobin, related by liver in bile.
- Summer '16