TOPIC 11C. The hindgut of carnivores and horses, blood supply and innervation Flashcards
what is the hindgut
caudal part of embryonic gut:
cecum, colon and rectum
where does the hindgut start and end
ostium ileocecale to anus
where does the caecum lie in car
right half abdomen except in sus
is the caecum in direct communication with the ileum in car?
no - joins it via plica ileocaecalis
describe shape of caecum in car and feq
spiral and comma shapes
arrangement of colo in ca and fe
colon ascendens, right colic flexure transverse colon left colic flexure descending colon rectum
which part of colon connects with ascending duodenum and via what
descending colon - via plica duodenocolica
what artery supplies the caecum in car
a caecalis ex a ileocolica
which artery supplies the colon ascendens in car
r colicus ex a ileocoelica
a colica dextra ex a. mes cran
which artery supplies the transverse colon in car
a colica media (ex a mes cran)
which artery supplies the descending colon in car
a colica sinistra (ex a mes caud)
which artery supplies the rectum in car
a rectalis cran (ex a mes caud)
which nerves innervate the colon in car and eq
S - plpexus mesenterica cran and caud
PS - vagus and pelvic
caecum in horses
30 L
cellulose digestion
where does ileum open in eq
papilla ilealis - ostium ilealis
where does caecum open into colon in eq
ostium caecocolicum
what bands/sacs does eq caecum have
4 and 4
what are the bands in eq and what do they create
dorsal, ventral, medial and lateral
dorsal - plica ileocaecalis
lateral - plica caecocolica
how is the colon arranged in eq
2x U shaped loops - colon ascendens
transverse short and
desc long and thin
what does large colon consist of in eq
ascending and transverse
what does small colon consist of in eq
descending colon
how many taniae in ascending colon of eq
8
name parts of ascending colon in horse
right ventral colon sternal flexure left ventral colon pelvic flexure left dorsal colon diaphragmatic flexure right dorsal colon
what do the ventral parts of the eq colon do
digest and absorb
what do the dorsal parts of the eq colon do
transport ingesta
which direction does eq transverse colon travel
from right to left
colon descendens in eq
linger than in any other species
has 2x taenia and haustra
what artery supplies eq caecum
a caecalis med and lat
what artery supplies eq colon transverse
a colica dextra and media
what artery supplies eq colon ascendens
r colicus and a colica dextra
what artery supplies eq colon descendens
a colica sin
