Term
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Definition
| TOWER skull, caused by the premature closing of the CORONAL and LAMBOID sutures |
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Term
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Definition
| long skull, caused by the premature closure of the sagittal sutures |
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Term
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Definition
| one side of the skull is smaller than the other, premature closing of suture only on ONE side |
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Term
| from what early tissues are the pharyngeal branchial arches, pouches, and clefts derived? |
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Definition
pharyngeal clefts- ECTOderm
arches- MESOderm
pouches- ENDOderm |
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Term
| what comes from the first pharyngeal cleft? |
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Definition
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Term
| what arises from the 1st pharyngeal pouch? |
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Definition
| Eustachian tube, tympanic cavity, and mastoid air cells |
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Term
| what abnormalities happen from the thyroid not migrating properly? |
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Definition
thyroglossal cysts
-pyramidal lobe of thyroid
-continued thyroid migration into anterior mediastinum |
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Term
| structures derived from the 1st branchial arch (9)- hint- M's and T's |
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Definition
1. Masseter
2. Mastication muscles
3. Malleus and Incus
4. MYLOHYOID
5. MECKEL'S CARTILAGE
6. MANDIBULAR NERVE V3
6.5 Mandible and Maxillary bones
7. Tensor tympani
8. Tensor veli palatini
9. anterior 2/3rds of Toungue |
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Term
| structures derived from the 2nd branchail arch? (7) |
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Definition
1. VII
2. Stapedius
3. Stylohyoid and ligament
4. styloid process
5. Stapes
6. Posterior belly of digastric
7. Muscles of facial expression (smile!) |
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Term
| structures from the 3rd pharyngeal arch |
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Definition
| stylopharyngeus and glossopharyngeal n. (IX) |
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Term
| structures that arise from the 4th and 6th arches? |
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Definition
| CN X (vagus), pretty much everything around the voice box (CRICOID, THYROID, ARYTENOID, CORNICULATE CARTILAGE, CUNEIFORM, etc...) |
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Term
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Definition
| maxillary and medial nasal process do not fuse, producing a hole...1/1000 live births |
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Term
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Definition
| failure of the palatine process to fuse, he cannot generate suction for feeding by pressing the tongue against the hard palate. 1/2500 live births |
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Term
| what are the two diverticula of the embryonic foregut, and what do they form? |
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Definition
liver diverticulum (hepatic bud)--> liver, gallbladder, bile duct system, and ventral pancreatic bud
dorsal pancreatic bud--> pancreas |
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Term
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Definition
midgut does not rotate 180 degrees upon return
-LI on the left, SI on the right |
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Term
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Definition
rotation of 180 degrees in the opposite direction
-LI returns first
-duodenum and SMA anterior to the transverse colon
-transverse colon may become occluded by the duodenum and SMA |
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Term
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Definition
failure of cecum to descend and of ascending colon to form
-appendicitis may be diagnosed as cholecystitis |
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Term
| most common congenital anomoly of the GI tract |
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Definition
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Term
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Definition
| remnant of the embryonic yolk sac (vitelline duct) found in the ileum occurring in about 2% of the population, may become inflamed and mimic the pain of appendicitis |
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