digestive organs pt. 2 test 3

Question 1

what is the small intestine

Answer 1

long tube from stomach to large intestine, bunched up in lower abdomen and it does chemical absorption and digestion of nutrients

Question 2

what is the first 10 inches of the small intestine that produces enzymes contains hepatopancreatic ampulla?

Answer 2

duodenum

Question 3

what is the middle 10 feet of the small intestine?

Answer 3

jejunum

Question 4

what is the ilium of the small intestine?

Answer 4

it is the end of the small intestine about 12 feet or so
it meets at the large intestine at the iliocecal sphincter. (a circular muscle at juncture of small intestine and large intestine)

Question 5

what is the term for the ridges in the wall inside of small intestine, they help mix food with enzymes by causing intestine contents to spinas it goes forward?

Answer 5

circular folds (small intestine)

Question 6

what is the mucosa of the small intestine modified to do??

Answer 6

to secrete enzymes and absorb nutrients

Question 7

what are extensions of mucosa into lumen, increase surface area of intestine mucosa and contains blood capillaries and a lacteal (lymphatic capillary)

Answer 7

vili of the small intestine

Question 8

what is microvili? (small intestine)

Answer 8

projections of apical surface of epithelial cells, increases surface area to absorb nutrients.

Question 9

what is the intestinal glands of the small intestine?

Answer 9

some epithelial cells, secrete enzymes.

Question 10

what is the term for multi-cellular glands in submucosa of duodenum, have ducts that lead to lumen and secretes alkaline mucus?

Answer 10

duodenal glands (intestinal glands of sm. intestine)

Question 11

what are panath cells (intestinal glands of the small intestine)?

Answer 11

secretes lysozyme to kill bacteria

Question 12

what is the large intestine?

Answer 12

thick tube from small intestine to anus, upside down “U” shape sits around small intestine

Question 13

what is the iliocecal sphincter (valve)?

Answer 13

smooth muscle at juncture of small and large intestine.

Question 14

what is the term for the pouch like structure at the beginning of the large intestine?

Answer 14

cecum

Question 15

what is a closed tube attached to cecum?

Answer 15

appendix

Question 16

what is the teniae coli?

Answer 16

reduced muscularis of the large intestine. it is 3 strips of the smooth muscle running the length of the large intestine and the teniae coli pulls teh wall of the large intestine into pouches called haustra

Question 17

what is the term for the most of the length of the large intestine?

Answer 17

the colon

Question 18

what part of the large intestine goes up right side of body turns toward midline at right colonic flexure?

Answer 18

the ascending colon

Question 19

what is the transverse colon of the large intestine?

Answer 19

goes right to left across upper abdomen turns down at left colonic flexure

Question 20

what part of the large intestine goes down on left side of abdomen and enters the pelvis?

Answer 20

descending colon

Question 21

what is the sigmoid colon of large intestine?

Answer 21

the colon turns toward midline and posterior

Question 22

what is the rectum?

Answer 22

muscular sack to hold poop, leads to anus

Question 23

what is the opening to the outside ?

Answer 23

the anus

Question 24

what is the internal anal sphincter?

Answer 24

its to close the anus, it is made of smooth muscle( not voluntary)

Question 25

what is the external anal sphincter?

Answer 25

its to help close the anus. it surrounds the internal anal sphincter. it is skeletal muscle (voluntary control)

Question 26

what is the tube like opening of the anus through both anal sphincters?

Answer 26

anal canal