large intestine

Question 1

ileocecal sphincter opens in response to

Answer 1

CCK and gastrin

Question 2

what can cause appendicitis

Answer 2

faecalith blocking the appendiceal orifice

Question 3

goblet cells secrete

Answer 3

mucus

trefoil proteins

Question 4

glycosaminoglycans

Answer 4

form barrier between gut and faecal matter

Question 5

trefoil proteins

Answer 5

promote epithelial repair

Question 6

mass movements

Answer 6

1-3 times/day

drives faeces into distal regions

Question 7

haustration

Answer 7

non-propulsive segmentation

allows time for fluid and electrolyte reabsorption

Question 8

defecation reflex

Answer 8

mass movement (rectum fills)
> activation of rectal stretch receptors
> activation of pelvic nerve, activates parasympathetic efferents
> contraction of smooth muscle of colon and rectum
(internal anal sphincter)

Question 9

control of defecation

Answer 9

pudendal nerve (S2,3,4 keeps ur guts off the floor)

Question 10

pudendal nerve vertebrae

Answer 10

S2,3,4 (KEEPS UR GUTS OFF THE FLOOR)

Question 11

valves of houston

Answer 11

separates gas from solids

Question 12

constipation

Answer 12

presence of dried hard faeces in colon as faeces is too long and too much h2o has been absorbed

Question 13

causes for constipation

Answer 13

ignoring urge to poo
decreased colonic motility (bad diet/drugs/old age)
obstruction of movement
paralytic ileus post surgery