The Digestive Questions

Digestive Questions
1. What is digestive tract?Answer: a long continuos tube with food first entering it at the mouth.

What happens to undigested materials in the digestive tract?Answer: continues along the tube until it exits at the anus.

What is the function of the mouth in the digestion process?Answer: food enters through the mouth

What is the term for the small mass of food that enters into the esophagus?Answer: bolus

What triggers peristalsisAnswer: the presence of the bolus in the esophagus triggers peristalsis.

What is the function of the cardiac sphincter?Answer: closes the entrance to the stomach and prevents its contents from reentering the esophagus

What is the mucous membrane?Answer: digestive tract

How long is the small intestineAnswer: 20 feet long

Where does most digestion and absorption of nutrients take place?Answer: small intestine

What increase the surface area of the small intestine?Answer: villi

What is the first section of the small intestine? What is its function?Answer: duodenum, the duodenum is very sensitive area of the digestive tract. Its receptors can detect the presence of hypo and hypertonic solutions.

Where is vile storedAnswer: gallbladder

What is segmentation?Grabbing a tube tightly at various places around the middle and squeezing so that its contents are broken into smaller pieces.

When does the ileocecal sphincter open?Answer: when the amount of food in the small intestine begins to build up, the sphincter opens to let it through.

What is the function of the anal sphincter?Answer: stops waste from leaving the body until you want it to.

What is the function of the appendix in humans?Answer: serves no apparent function in man and which sometimes becomes infected and must be removed.

Where does digestion begin?Answer: in the mouth

What is gastric juice made of?Answer: hydrochloric acid, and enzymes

Where are enzymes released in the small intestine produced?Answer: Pancreas

What is the function of the following enzymes, anaylase, lactose, maltase, etcAnswer: they break apart lactose, maltose and sucrose respectivelyThere are two ways that nutrients get into the blood stream.Answer: diffuse across the intestinal membrane and into the blood simply by flowing along the concentration gradient.