Term
| Ileal Diverticulum (meckels diverticulum) |
|
Definition
| Meckel diverticulum is the most ommon form of congenital abnormality of the small intestine, resulting from an incomplete obliteration of the vitelline duct. *Rules ofPr |
|
|
Term
| Nonrotation of the midgut |
|
Definition
| most common abnormality of midgut rotation. |
|
|
Term
| Malrotation of the Midgut |
|
Definition
| caused by incomplete rotation <270 degrees counterclockwise rotation. DJJ low and to the right of hte normal location. proximal small bowel is in the right upper quadrant. cecum is in the upper and or left abdomen. cecum in upper left absdomen. large bowel in left abdomen. clinical symptoms older children may show chronic recurrent abdominal pain |
|
|
Term
|
Definition
| refers to a congenital obstruction with complete occlusion of the intestial lumen. 95%of obstructions. |
|
|
Term
|
Definition
| partial occlusion with incomplete obstruction 5% of obstructions. |
|
|
Term
| Type I jejunoileal atresia |
|
Definition
| single, thin web or diaphragm which blocks intestine |
|
|
Term
| Type II jejunoileal Atresia |
|
Definition
| cord of scar between the upstream and downstream ends. |
|
|
Term
| Type III jejunoileal Atresia |
|
Definition
| portion of the intestine is completely missing. |
|
|
Term
| How do the treatments differ between differing types of jejunoileal atresias? |
|
Definition
| They are all treated similarly. |
|
|
Term
| Cranial end of hindgut becomes what? |
|
Definition
| cranial end develops into distal one-third of the transverse colon, descending colon and sigmoid colon. |
|
|
Term
| Terminal End of hindgut becomes what? |
|
Definition
| Endoderm-lined pouch called the cloac, which contacts the surface ecoderm of the procodeum to form the cloacal membane. |
|
|
Term
| Cloaca is divided by urorectal septum into what sructures? |
|
Definition
| Rectum and upper anal canal and the urogenital sinus. |
|
|
Term
|
Definition
| anal canal may end blindly and there may be an ectopic opening or fistula, that comomonly opens into the perineum. fistula may open into vulva or urethra. With fistula results from incomplete separation of teh cloaca by the urorectal septum. |
|
|
Term
|
Definition
| Anal canal ends well abouve the anal canal most common type of anorectal malformation. usually a fistula resulting from incomplete separation of teh cloaca by the urorectal septum. |
|
|
Term
|
Definition
| anal canal and rectum are present but are separated by atretic segmen of rectum. may be caused bby abnormal recanalization or defective blood supply like atresia of small intestine. |
|
|
Term
|
Definition
| primitive gut ttube is suspended within the peritoneal cavity of the embryo by ventral mesentery and dorsal mesentery, from which all adult mesenteries are derived. |
|
|
