10/11: Gut Development Flashcards
What 3 segments is the gut tube divided into?
Foregut, midgut, and hindgut
Neural tube
becomes CNS
Notochord
fibrous strand that runs from head to tail that will largerly be wiped out in development of vertebral column
What does the notochord give rise to
Nucleus pulpous
Septum transversum
mesoderm tissue that becomes diaphragm
Allantoid
Duct for embryonic gas exchange (for shelled organisms)
Gut tube
gives rise to GI system. Simple, straight tube, divided into 3 segments (Foregut, midgut, and hindgut)
Where is all the digestive system derived from?
Gut tube
Aorta
Gives off 3 branches to give blood supply to the 3 segments of the gut
What organs come from the foregut?
Esophagus
Stomach
1/2 of Duodenum
What are accessory organs of the foregut?
Spleen
Pancreas
Gallbladder
Liver
What organs come from the midgut?
1/2 Duodenum
Jejunum
Ileum
Cecum
Appendix
Ascending colon
2/3 transverse colon
What organs come from the hindgut?
1/3 Transverse colon
Descending colon
Sigmoid colon
Rectum
Foregut derivatives are supplied by branches of the ______________
Celiac artery
Midgut derivatives are supplied by branches of the ______________
Superior mesenteric artery
Hingut derivatives are supplied by branches of the ______________
Inferior mesenteric artery
Autonomic Sympathetic Preganglionic cell bodies from the foregut innervate with:
T5-T9
Autonomic Sympathetic Preganglionic cell bodies from the midgut innervate with:
T9-12
Autonomic Sympathetic Preganglionic cell bodies from the hindgut innervate with:
T12-L2
Autonomic Sympathetic Splanchnic nerves from the foregut innervate with:
greater splanchnic nerve