Abdominal Cavity II Flashcards
What type of muscle is at pharyngeal end of esophagus
straited (voluntary)
What type of muscle is at gastric end of esophagus
smooth (involuntary)
Where does the esophagus go into the diaphragm
esophageal hiatus
level of T10
Lesser omentum
made by ventral mesentary
has 2 parts: gastrohepatic ligament, liver to duodenum
Duodenum
short, C-shaped
ducts carrying excretions from oliver, gallbladder, and pancreas enter duodenum
_____ part of duodenum are intraperitoneal
1st and 5th
_____ part of duodenum are secondarily retroperitoneal
2nd-4th
Jejununum
starts where sm. intestine is free from secondary adhesion to peritoneum
blends with ileum
intraperitoneal
Ileum
intraperitoneal
Characteristics of large intestine
taenia coli
haustra
epiploic appendages
Cecum
blind intestinal pouch
intraperitoneal
appendiz at lower pole
ascending colon
between cecum and right colic flexure
forms right paracolic gutter
secondarily retroperitoneal
Transverse colon
fuses with greater omentum
between right and left colic flexure
intraperitoneal
Descending colon
forms left paracelic gutter
secondarily retroperitoneal
sigmoid colon
s-shaped free portion
intraperitoneal
ends at rectosigmoid junction
rectum
pelvic, fixed portion
primarily retroperitoneal
anus
primarily retroperitoneal
Atery of the forgut
celiac trunk
L gastric a
goes to proximal portion of lesser curvature of stomach
splenic atery
goes to spleen
branches of splenic a
prancreatic
short gastric a
left gastro-omentum
branches of common hepatic a
gastroduodenal
right gastric
proper hepatic a
branches of gastroduodeal a
right gasto-omental a
superior pancreatic-duodenal a
supraduodenal a (sometimes absent)
right gastric a
goes to right lesser curvature of stomach
branches of poper hepatic a
right and left hepatic a
artery of the midgut
superior mesentery a (SMA)
branches of SMA
inferior pancreatic duodenal a intestinal branches ileocolic right colic a middle colic a marginal a
intestinal branches
go to jejunum and ileum
right colic a
go to ascending colon
middle colic a
go to transverse colon
marginal a
anastomotic a
circles colon
gives rise to vasae recta
What is the marginal a formed by
ileocolic, right colic, middle colic, and left colic
artery of hindgut
inferior mesenteric a (IMA)
branches of IMA
left colic a
sigmoid a
superior rectal a
left colic a
goes to descending colon
How do you get from the aorta to liver if common hepatic a is blocked?
celiac trunk splenic a left gastroepiploic a right fastroepiploic a gastrodudodenal a proper hepatic a left hepatic a
vein of forgut
splenic vein
vein of midgut
superior mesenteric v
vein of hindgut
inferior mesenteric v
inferior mesenteric v
doesnt’ come off of vena cava
goes back to splenic vein
portal hypertension causes
increased blood pressure
portal canal anastomoses
esophageal anastomosis causes
esophageal varices
rectqal anastomosis casues
hemorrhoids
umbilical anastomosis casues
caput medusa
colonic anastomosis casues
anastomoses between protal vein and body wall veins
Most blood from guts goes into what? What is the exception?
hepatic portal system
rectum
Portal system
circulatory system between 2 capillary beds
1st bed
all capillaries in guts
blood out of aorta into gut vessels
back up through venous system into hepatic portal vein
2nd bed
sinosoids
liver detoxes blood coming from guts
Properties fo blood flowing though cap bed
high pressure
low velocity
Upper rectum venous return goes through
inferior mesenteric vein
Lower rectum venous return goes through
interal iliac vein
What can cause backup in hepatic portal system
cirrhosis
hepatitis
tumors
Esophageal varices
if aggravated they can burst
can cause you to drown in your own blood
Hemorrhoids are caused by
liver problems
pushing/straining
pregnancy
caput medusa
umbilical veins get backed up
Innervation of foregut
celiac plexus
Symphatics of foregut
arise from T5-T9
presynapthic pass through sympathetic chain
pass through greater splanic nerve
synapse in celiac ganglion
post-synpatics follow branhes of celiac trunk to target organs
parasymphatetics of foregut
arise from brain/vagus
pass through celiac plexus
follow branches of celiac trunk to targets
synapse in ganglia in gut plexuses
postsynaptics reach targets via short post synaptic fibers
innervation of midgut
superior mesenteric plexus
sympathetics of midgut
arise from T10-T12
presynaptic pass through sympathetic trunk
pass through lesser splanic nerve or least splanic
synapse in superior mesenteric ganglion
post synpatic follow branches of SMA to largest organs
parasympathetics of midgut
arise from brain/vagus pass through SMA follow SMA to targets synapse in ganglia in gut plexus post synaptic reach targets via short post synaptic fibers
innervation of hindgut
inferior mesenteric plexus and hypogastric plesuses
sympathetics of hindgut
arise from L1-L2
pass through sympathetic trunk
pass through lumbar splanic nerves (L1-L2)
synapse in inferior mesenteric ganglion
post synaptics follow branch of IMA to target organs
parasympathetics of hindgut
arise from S2-S4
pass through sacral spinal nerves S2-S4
pass through pelvic splanic nerves
branches to colon pass cranially through hypogastric plexus and inferior mesenteric plexus
follow branches of IMA to targets
synapse in ganglia in gut plexus
postsynaptetics reach tragets via short post synaptic fibers
