Gut Development and Peritoneum Flashcards
left most organ in the abdominal cavity
spleen
The gut tube is divided into how many segments
3
The 3 segments of the gut tube
foregut, midgut, and hindgut
T/F: Innervation and blood supply to the gut tube segments is strongly patterned.
True
Accessory digestive organs
Spleen, pancreas, gall bladder, and liver
Which organ in the digestive system is a lymphoid organ not a part of digestion cut has same nerve supply as the gut?
Spleen
Where does the foregut to midgut transition occur?
Between second and third segment of duodenum
Where does the midgut to hindgut transition occur?
2/3 of the way through the transverse colon
Esophagus, stomach, duodenum (2/4), and accessory digestive organs (liver, gallbladder, spleen, and pancreas) are part of what gut segment?
Foregut
Duodenum (2/4), jejunum, ileum, cecum, appendix, ascending colon, and 2/3 of transverse colon are part of what gut segment?
Midgut
Transverse (1/3), descending colon, sigmoid colon, and rectum are all part of what gut segment?
Hindgut
Each gut segment is supplied by an _________
unpaired branch of the abdominal aorta
Foregut derivatives are supplied by branches of ______
the celiac artery
Midgut derivatives are supplied by branches of ______
superior mesenteric artery
Hindgut derivatives are supplied by branches of ______
inferior mesenteric artery
Which artery is the largest of the gut?
superior mesenteric artery
Which artery is the shortest and simplest of the gut?
inferior mesenteric artery
Which artery is the most complex of the gut?
celiac artery
parietal peritoneum will have _____ innervation
somatic
Peritoneum on organs of abdominal organs
visceral peritoneum
double layers of peritoneum: bridges between visceral and parietal peritoneum
mesenteries
_______ will cover most of abdominopelvic region outside of the lower pelvis
peritoneum
(Sympathetics) The preganglionic bodies of the foregut are found in
T5-T9
(Sympathetics) The preganglionic bodies of the midgut are found in
T9-T12
(Sympathetics) The preganglionic bodies of the hindgut are found in
T12-L2
(Sympathetics) The splanchnic nerve supplying the foregut is called the
greater splanchnic nerve
(Sympathetics) The splanchnic nerve supplying the midgut is called the
Lesser/least splanchnic nerves
(Sympathetics) The splanchnic nerve supplying the hindgut is called the
Least splanchnic / lumbar splanchnic nerves
(Sympathetics) The paravertebral ganglion associated with the foregut is called
celiac
(Sympathetics) The paravertebral ganglion associated with the midgut is called
Superior mesenteric/ intermesenteric
(Sympathetics) The paravertebral ganglion associated with the hindgut is called
Inferior mesenteric/ intermesenteric
(Sympathetics) The postganglionic axons of the foregut follow
celiac artery
(Sympathetics) The postganglionic axons of the midgut follow
superior mesenteric artery
(Sympathetics) The postganglionic axons of the hindgut follow
inferior mesenteric artery
(Parasympathetic)Preganglionic cell bodies for the foregut and midgut are found in
brainstem
(Parasympathetic) Preganglionic cell bodies for the hindgut are found in
S2-S4
Nerve supplying parasympathetic innervation for foregut and midgut is
Vagus nerve
Nerve supplying parasympathetic innervation for hindgut is
Pelvic splanchnic nerve
Location of parasympathetic ganglion for foregut and midgut is found in
organ walls
Location of parasympathetic ganglion for hindgut is found in
organ walls
Mesentery that connects the liver to anterior abdominal wall
falciform ligament
Mesentery hanging down from stomach and transverse colon
greater omentum
___ anchors abdominal organs to decrease movement; passageways for blood supply, nerves, and lymphatics
mesentery
Behind peritoneal cavity
retroperitoneal
When an organ originally part of gut tube becomes retroperitoneal; large mesentery and lie in posterior abdominal wall embedded behind parietal peritoneum wherever contact is made
secondarily retroperitoneal
____ organs belong to some organ system other than the digestive system and never have mesenteries at any point.
Primarily retroperitoneal
is neither visceral nor parietal; it is a bridge between the two
mesentery
Organs with mesenteries also have _____ peritoneum
visceral
T/F: Organs that are retroperitoneal have mesenteries.
False; do not have
T/F: Vessels and nerves supplying mesenteric organs are also mesenteric.
True
T/F: Vessels and nerves supplying retroperitoneal organs are also retroperitoneal.
True
Part of peritoneal sac that gets trapped behind the stomach and its mesenteries
lesser sac
Part where the lesser sac and greater sac meet
omental foramen
