Gastrointestinal Anatomy Flashcards
what is movement/activity of the GIT regulated by
enteric nervous system
what nerve allows for function of the enteric nervous system
vagus nerve
two types of effector systems for GIT and what do they do
parasympathetic-stimulates movement
sympathetic-inhibits movement
where do you listen for gut sounds? why?
right flank. the colon is located there
size of stomach
2-4 gallons
8% of GIT
size of SI(length, diameter, volume, and % of GIT)
70 ft long
3-4 inch diameter
12 gallons
30% of GIT
size of cecum(length, volume, and % of GIT)
4 ft long
8 gallons
15% of GIT
what does blind sac mean when referring the the cecum
ingesta enters and exits at the same place
size of large colon(length, diameter, volume, and % of GIT)
12 ft long
4-10 inch diameter
20 gallons
39% of GIT
what digestive segment is described as overlapping horseshoe shapes
large colon
4 segments of large colon
right ventral colon
left ventral colon
right dorsal colon
left dorsal colon
3 flexures of large colon
sternal flexure
pelvic flexure
diaphragmatic flexure
why is horses rolling when collicky so bad
it causes intestines to twist cutting off blood flow leading to tissue death
what feed causes impaction at illeal junction
coastal hay
T/F horses on coastal hay have higher instances of colic impaction
FALSE. location changes not intensity or frequency of impaction
size of small colon(length, diameter, volume, and % of GIT)
10 ft long
2-4 inch diameter
5 gallons
10% of GIT
function of small colon
water absorption
formation of fecal balls
what is the rectum
last 1 foot of colon
accessory organs
pancreas
liver
job of pancreas
digestive enzymes
buffer
insulin/glucagon
job of liver
bile synthesis
nutrient metabolism
effect of lack of gallbladder
-bile is continuously secreted from the liver
-struggle digesting large amounts of fat
