A&P Chapter 10 Flashcards
A hormone produced by the endocrine cells of the stomach that increases stomach secretions as well as the rate of gastric emptying
Gastrin
Two muscular rings (upper and lower) that regulate the movement of material into and out of the esophagus
Esophageal Sphincters
A pancreatic enzyme that digests proteins
Carboxypeptidase
A hormone produced in the intestine that stimulates the production of pancreatic secretions and gallbladder contractions and inhibits gastric motility
Cholecystokinin
A specialized portion of the circulatory system that directs blood from the stomach and intestine through the liver for processing
Hepatoportal System
The name given to the substance that leaves the stomach once food is digested; it is a combination of all of the eaten foods with added stomach acids
Chyme
Digestion of food by enzymes in the stomach and small bowel
Chemical Digestion
The presence of gallstones
Cholelithiasis
Related to digestion, it is a thick liquid that binds food particles and lubricates them during swallowing
Mucus
Rings of muscle that surround an opening, allowing for contraction or closing
Sphincters
Weakened areas (outpouchings) in the walls of the colon
Diverticuli
The innermost lining of the lumen of each portion of the alimentary canal; rich in glands, lymphatic tissue, and blood vessels
Mucosa
The muscular layer of the wall of the alimentary canal
Adventitia
An appendage attached to the end of the cecum that contains large numbers of lymph nodules
Vermiform Appendix
The primary enzyme in saliva
Salivary Amylase
One pair of the three sets of salivary glands; located beneath the tongue
Sublingual Glands
The enzyme formed from the exposure of pepsinogen to hydrochloric acid in the stomach that is important in the initial breakdown of proteins
Pepsin
Numerous pits in the stomach mucosa; also called invaginations
Gastric Pits
The duct through which digestive enzymes pass on their way through the common hepatic duct to the duodenum at the ampulla of Vater
Pancreatic Duct
The chemical substance produced by parietal cells in the stomach that is important in the absorption of vitamin B 12
Intrinsic Factor
A cavity created by a double fold of mesentery, which extends inferiorly from the stomach
Omental Bursa
The body system that carries out the processes of mechanical and chemical digestion; also called the gastrointestinal system
Digestive System
One of four portions of the colon; it extends from the hepatic flexure across the abdomen to the splenic flexure
Transverse Colon
Recesses in the colon caused by contractions of the teniae coli
Haustra
The mechanical and chemical breakdown of foods and the absorption of resulting nutrients by the body’s cells
Digestion
The bottom of a hollow organ. In the stomach, it is the portion that balloons superior to the cardiac portion to act as a temporary storage area
Fundus
A pancreatic enzyme that AIDS in the digestion of proteins
Trypsin
Intermittent patches of lymph nodes located in the ileum
Peyer Patches
The motion that results in the passage of substances through the digestive tract
Motility
A weakening in the esophageal hiatus that allows the stomach to move above the diaphragm and may result in acid reflux, causing heartburn
Hiatal Hernia
Alternating contraction and relaxation of smooth muscle in nonadjacent segments of the small intestine
Segmentation
Parts of the peritoneum that hold the abdominal organs in place and provide a passageway for blood vessels and nerves to the organs
Mesenteries
A smooth membrane of connective tissue that lines the abdominal cavity
Parietal Peritoneum
Sensation often caused by the backflow of stomach acid into the esophagus; also called reflux esophagitis
Heartburn
Opening in the duodenum into which the common bile duct and the pancreatic duct drain
Ampulla of Vater
A portion of the gastrointestinal system that extends from the small intestine to the rectum and maintains water balance by absorbing and excreting water; also called the colon
Large Intestine
Thick folds of the stomach wall
Rugae
The distal orifice of the alimentary canal, where stool passes from the body
Anus
A portion of the gastrointestinal system extending from the small intestine to the rectum that maintains water balance by absorbing and excreting water; also called the large intestine
Colon
The last portion of the small intestine, which extends from the jejunum to the ileocecal valve at the beginning of the large intestine
Ileum
The short tube at the end of the rectum that contains two circular sphincters (internal and external), which help regulate the passage of stool
Anal Canal