Anatomy CH 22.15-22.24

The small, slender structure that is attached to the large intestine and is suffused with lymphoid nodules is the __________.

appendix

The reflex that occurs in the large intestine and promotes the movement of feces toward the anus is the __________. a. haustral reflex b. defecation reflex c .micturition reflex d. cephalic reflex

defecation reflex

The bile duct and the pancreatic duct both enter the duodenum at the _____________. a. central vein b. bile canaliculi c. duodenal papilla d. portal triad

duodenal papilla

What are the 3 regions of the small intestine?

duodenum, jejunum, ileum

When two fluids are separated by a selectively permeable membrane, water tends to flow into the fluid that has the __________.

higher concentration of solutes

In the oral cavity, the digestive enzyme __________ is found in saliva and begins the digestion of __________.

salivary amylase; starch

What are the pouches that give the colon its typical appearance?

Haustra

Which of the following does NOT digest proteins? a. Nuclease b. Enteropeptidase c. Pepsin d. Trypsin

Nuclease

Which of the following does NOT digest carbohydrates? a. Sucrase b. Pancreatic lipase c. Lactase d. Pancreatic alpha-amylase

Pancreatic lipase - that helps with digestion of lipids

What is the correct sequence of parts in the colon moving from the small intestine to the anus?

Cecum - ascending colon - transverse colon - descending colon - sigmoid colon - rectum

There are some obvious bends in the colon that you don't see in the small intestine. What are the names of these bends? a. Villi b. Taenia coli c. Flexures d. Haustra

Flexures

What is perhaps the most important function of the large intestine?

Water reabsorption

Which of the following are NOT absorbed in the large intestine? a. Organic wastes, such as urobilinogens b. Water c. Certain vitamins, such as vitamin K d. All of the listed substances are absorbed in the large intestine.

All of the listed substances are absorbed in the large intestine.

Why is diarrhea potentially life threatening?

Dehydration - loss of water and electrolytes

What is the main stimulus that triggers the defecation reflex?

Distension of the rectum