EXSS 256: Digestive System Exam Questions With Correct Answers

EXSS 256: Digestive System Exam Questions With
Correct Answers


Upper GI - ANSWER mouth, pharynx, esophagus, stomach



Lower GI - ANSWER intestines, anus



Functional segments - ANSWER mouth, pharynx, esophagus, stomach, intestines



Accessory organs - ANSWER teeth, tongue, salivary glands, liver, gallbladder, pancreas



Order of transport - ANSWER mouth, pharynx, esophagus, stomach, SI (duodenum,
jejunum, ileum), LI (cecum, ascending colon, transverse colon, descending colon,
sigmoid colon), rectum, anus



Functions of the digestive system - ANSWER ingestion, secretion, mixing and
propulsion, digestion, absorption, defacation



Ingestion - ANSWER - intake of food

- mouth



Secretion - ANSWER - release of water, acids, buffers and enzymes into the GI tract

- aid in digestion

- mainly in the mouth, but also esophagus, stomach and intestines



Mixing and Propulsion - ANSWER - churning and propelling of food thorough the GI tract

- swallowing in the mouth

- peristalsis in the esophagus, stomach and intestines

, Mechanical Digestion - ANSWER - physical movements through the GI tract that aid in
chemical digestion

- chewing in the mouth

- churning in the stomach

- segmentation in small intestine



Chemical Digestion - ANSWER - catabolic reactions to break down large molecules into
smaller, usable ones

- mainly in SI



Absorption - ANSWER -passage of nutrients from GI tract to blood or lymph for
distribution to cells

- mainly in SI, but also in LI



Defecation - ANSWER - elimination of feces

- rectum and anus



Gingiva - ANSWER gums



Palates - ANSWER roof of the mouth



Hard palate - ANSWER - anterior

- maxilla and palatine bones

- bony separation between oral and nasal cavities



Soft palate - ANSWER - posterior

- muscular arch