38: GI Anatomy - Matz Flashcards
mouth is divided into
vestibule (between lips and teeth) and oral cavity proper (teeth, tongue)
division line is teeth
what salivary gland opens in vestibule?
parotid gland
palate to tongue arch
palate to pharynx arch
palatoglossal
palatopharyngeal
hallmark of oro and laryngopharynx
epiglottis
location of esophagus
posterior mediastinum
constrictions of esophagus
cervical (cricopharyngeus)
thoracic (behind aorta and bronchi)
diaphragmatic (through right crus of diaphragm)
where is the esophageal hiatus?
T10
right crus of the diaphragm
blood supply to esophagus
thoracic aorta
esophageal branches of l. gastric
parts of intestines associated with mesocolon
transverse and sigmoid colon
mesentery is associated with the small intestine (jejunum and ileum)
part of mesentery attaching to stomach and liver
omentum
falciform ligament
round ligament of the liver (ligamentum teres hepatis)
is ventral peritoneum!
epiploic foramen of winslow
entrance from greater to lesser sac
aka omental foramen
how many layers are in the visceral peritoneum? mesentery? greater omentum?
1
2
5
lesser sac is found?
behind stomach, towards spleen
regions of stomach
cardia
fundus (air bubble)
body
pylorus and pyloric sphincter
curvatures of stomach
greater
lesser
blood supply to stomach
left (from celiac trunk) and right gastric (from hepatic trunk) (lesser curvature)
left (from splenic) and right gastroepiploic (greater curvature)
short gastrics (fundus)
gastroduodenal (pyloric region)
parts of small intestine in order
duodenum (“c loop”)
jejunum (most absorption) (plicae circularis)
ileum
blood supply to small intestine
gastroduodenal (from common hepatic)
superior pancreaticoduodenal (from celiac trunk)
superior mesenteric
3 primary branches celiac trunk
left gastric
splenic
common hepatic
what part of duodenum is retroperitoneal?
2nd and 3rd (out of 4)
parts of lg. intestine in order
cecum ascending colon transverse colon descending colon sigmoid colon rectum
taenia coli
outer longitudinal layer of muscle in 3 strips in lg. intestine
causes haustrae
stops at beginning of rectum
blood supply to lg. intestine
superior (ileocecal, ascending colon, transverse colon) and inferior mesenteric (descending, sigmoid, superior rectal)
internal iliac (middle rectal) and internal pudendal (anal sphincter and inferior rectal)
transition pt for blood flow in lg. intestine
left colic flexure
if it crosses line it is marginal a.
fatty appendages on lg. intestine
appendices epiploica
differentiates from sm intestine
superior v. middle and inferior rectal vv.
lower drain into IVC
superior goes to portal v.
rectal veins and aa and also called
hemorrhoidal aa and vv
named for clinical part
blood supply to anus
internal pudendal
internal and external sphincter
internal is voluntary (pudendal n.) ??? (online internal is involuntary – makes more sense)
parasymps S234 are “pooping control”
pectinate line
above is autonomic
below is somatic (pudendal) (pain!_
hepatic portal v. recieves blood from
sup mesenteric
splenic
inf mesenteric (goes into splenic)
quadrate lobe of liver is near
gallbladder
tail of liver is caudate lobe
both are part of right lobe
main blood supply to pancreas
splenic a.
parasymp innervation up to l. colic flexure is …
vagus CN X
then S234 (pelvic splanchnic) after
promotes peristalis and secretion
symps are from T1-L2
appendicitis referred pain
T10 (belly button)
drains lymp from below diaphragm
thoracic duct
cisterna chyli = thoracic duct accumulation
