21 Digestive System P2

Question 1

What kind of tissue is the small intestine lined with?

Answer 1

Simple columnar epithelium

Question 2

What are the three modifications that drastically increase surface area for absorption in the small intestine?

Answer 2

Circular Folds (plicae circulares)–macroscopic, slow chyme
Villi–microscopic
Microvilli–microscopic, folds on villi

Question 3

What structures keeps you from crapping when you fart?

Answer 3

Anal valves

Question 4

Mucus from what structure lubricates the passage of feces?

Answer 4

anal sinuses

Question 5

What are the exocrine functions of pancreas? Endocrine functions?

Answer 5

Exocrine: release of digestive enzymes
endocrine: production of glucagon and insulin

Question 6

What are the functions of the liver?

Answer 6

Production of bile
Detoxification of blood
Red blood cell recycling
Storage of excess nutrients
Production of blood proteins: albumin, globulin, fibrinogen

Question 7

What does the gall bladder do?

Answer 7

Stores and concentrates bile

Question 8

What organs are retroperitoneal?

Answer 8

Ascending/Descending colon
Kidneys
Pancreas
Rectum 
Duodenum

Question 9

What are the three structures of the primitive gut? What does each develop into?

Answer 9

Foregut: pharynx to duodenum

midgut: duodenum to transverse colon
hindgut: transverse colon to anus