comparative GI tract anatomy: equine + porcine Flashcards
areas where torison can occur and result in colic
cecolic fold
nephrosplenic ligament
phrenicosplenic ligament
The stomach of the horse is divided into 2 forms of mucosa
glandular and non-glandular portions
What is the margus plicatus?
The line that divides the stomach in non-glandular and glandular portions
parts of the horse stomach
saccus caecus
cardia with sphincter
fundus
pylorus with sphincter
Instead of having a margo plicatus, pigs have a
gastric diverticulum
In pigs, the area that extends from the cardia into the diverticulum is the
non-glandular portion of the stomach
t/f in pigs, the non-glandular area is particularly susceptible to ulceration with certain management/disease conditions.
true
present in pigs and ruminants
An enlarged area of the pyloric region of the stomach that narrows the pyloric orifice
torus pyloricus
name the parts of the small intestine
duodenum
jejunum
ileum
name all the parts of the duodenum
- cranial duodenum
- cranial flexure
- descending duodenum
- caudal flexure
- ascending colon (with its duodenocolic fold)
- duodenojejunal flexure
The ileocecal fold attaches the
cecum to ileum
Ileal papilla with ileocecal orifice are found at the
beginning of ascending colon
At the beginning of the duodenum, there are two protuberances before the creanial flexure
duodenal ampulla
sigmoid flexure
t/f Imbalances in the contractions of the cecum and the jejunum are one of the causes of colic
true
name the parts of the large intestine
cecum
A,D,T colon
rectum
Ingesta courses from the ileum to the cecum through the ileocecal orifice and then travels within the cecum before passing through the
cecocolic orifice to the ascending colon
The large intestine is divided in 2 sections
large and small colon
The small colon is composed of
T and D colon
The large colon is composed of
cecum and ascending colon
The cecum is divided in 3 parts
base, body, and apex
local thickenings of the longitudinal stratum of the tunica muscularis
bands or teniae
how many bands does the cecum have
4
name the order of route of bolus of food in large intestine WITH ALL IT’S PARTS
cecum
RVC
sternal flexure
LVC
pelvic flexure
LDC
diaphragmatic flexure
RDC
T colon
D colon
3 flexures assoc. with the large colon
Sternal
Pelvic
diaphragmatic
the large colon composed of cecum and ascending colon has
sacculations or haustra
the RVC has how mmany bands
4
the LVC has how many bands
4
LDC has how many bands
1
RDC has how many bands
3
the T colon has how many bands
2
the D has how many bands
2
the ascending colon in pigs has a
spiral part
how many centripetal loops does the ascending colon has? are they sacculated?
3 1/2
sacculated
describe the centrifugal spirals
on the inside of the centripetal
in dogs, the colic branch of the ileocolic a. supplies the
A colon
in horses, the Colic br. of the ileocolic a. supplies the
RVC and LVC v
in pigs, the Colic br. of the ileocolic a. supplies the
proximal and centripetal loop
in dogs, the right colic a. supplies the
aboral part of A. colon
in horses, the right colic a. supplies the
LDC and RDC
in pigs, the right colic a. supplies the
centrifugal and distal loop
in dogs, horses and ruminants the middle colic a. supplies the
T colon
in dogs, horses and ruminants the left colic a. supplies the
D colon
