Lesson 2B - Introduction to the Digestive System Flashcards
absorption
Passage of materials through the walls of the intestine into the blood stream
anus
Opening of the digestive tract to the outside of the body
appendix
Blind pouch hanging from the cecum
bile
Digestive juice made in the liver and stored in the gallbladder. It breaks up large fat globules.
bilirubin
Pigment released by the liver in the bile
cecum
First part of the large intestine
colon
Large intestine (ascending, transverse, descending colon)
defecation
Expulsion or passage of feces from the body through the anus
diarrhea
Watery stools
digestion
Breakdown of complex foods to simpler forms
duodenum
First part of the small intestine
elimination
Removal of waste material from the body
feces
Solid wastes; stools
gallbladder
small sac under the liver; stores bile
gastrointestinal tract (GI)
Consists of three functions; digestion, absorption, and elimination of food
ileum
Third part of the small intestine
jejunum
Second part of the small intestine
large intestine/bowel
Extends from the ileum to the anus. Six sections, cecum, ascending colon, transverse colon, descending colon, sigmoid colon, and rectum
liver
A large organ located in the RUQ of the abdomen. The liver secretes bile; stores sugar, iron and vitamins; produces blood proteins; and destroys worn out red blood cells.
mastication
Chewing
perisalsis
Rhythm-like contractions of the tubes of the gastrointestinal (GI) tract and other tubular structures
pyloric sphincter
Ring of muscle fibers at the distal region of the stomach, where it joins the duodenum
rectum
Last section of the colon
sigmoid colon
Lower part of the colon, shaped like an S
small intestine/bowel
The small intestine has three parts, the duodenum, the jejunum and the ileum
sublingual
tissue under the tongue
uvula
Soft tissue hanging from the soft palate into the mouth