28: Lower GI

colic

eq

problems in lower digestive system

belly ache

duodenum

first part: long, descends down the R side of abdomen (descending duoenum)

\-associated with pancreas

second part: passes L abdomen, cranially (ascending duodenum)

thrid part: reaches root of mesentery, anchored tightly to dorsal body wall

What is the last part of the duodenum?

mesentery

descending dudenum

ascending dudenum

root of mesentery

pancreas

stomach

ascending dudenum

transverse duodenum

ascending duodenum

root of the mesentery

stomach

pancreas

root of mesentery

descending dudenum

ascending dudenum

jejunum

jejunum

longest section of small intestines

moves freely in cavity

intial and final parts are most anchored

jejunum

jejunum

bladder

spleen

stomach

liver

diaphragm

what is the final part of the small intestines?

ileum

ileum

short, firmly anchored in abd (shorter mesentery)

less coiled

ileum

ileum

\

illocecal ligament

cecum

ascending colon

transverse colon

descending colon

jejunum

What structures are part of the large intestines?

cecum

colon (3 parts: ascending, descending, transverse)

rectum

where do most of the species differences occur in the large intestines?

ascending colon

ileocolic opening

where the ileum of the SA terminates

b/t ileum & large intestines

cecum

short, small

R side of abd

(SA)

cecocolic opening/orifice

b/t cecum & colon

where cecum opens into colon

ascending colon

ascends from cecum, short

transverse colon

where colon crosses from R to L

cranial to root of mesentery

descending colon

when colon descends alongt the L body wall

rectum

when colon moves into pelvic region

terminates at anal canal

rectum

anal canal

cecum

ascending colon

descending colon

transverse colon

rectum

anal sacs

empty into anal canal

located b/t inner and outer anal sphincters i

inner anal sphincters

smooth muscle

outer anal sphincters

skeletal muscle

anus

descending colon

rectum

anal sac

anal sac gland

large intestines, eq

ileum - ileocecal opening - cecum - cecocolic opening - colon

where is the eq cecum?

R abdomen

eq cecum

base, body, apex

How does the eq cecum attach to the ileum? ascending colon?

I: ileocecal fold

AC: cecolic fold

eq ascending colon

large, highly modified

what are the seven parts of the eq ascending colon?

R ventral colon

sternal flexure

L venteral collon

pelvic flexure

L dorsal colon

diaphragmatc flexure

R dorsal colon

cecum base

cecocolic orifice

cecum body

cecum apex

ileum

R ventral colon

cecocolic fold

R dorsal colon

root

small colon

transverse colon

diaphragmatic flexure

\

sternal flexure

L ventral colon

great, large colon

L dorsal colon

descending colon

What is the #1 site of impaction (eq)

pelvic flexure

R. ventral colon

connects to cecum via cecocolic fold

sternal flexure

where R colon passes over to the L

ventral, cranial, next to sternum

pelvic flexure

where L ventral colon turns dorsal

narrow

diaphragmatic flexure

where L dorsal colon crosses back to R side

dorsal, cranial, up against diaphragm

cecum body

cecum baes

R ventral colon

cecum apex

rectum

small colon

transverse colon

large colon

diaphragmatc flexure

sternal flexure

cecocolic fold

ileum