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Branchial Arches, Pouches, Derivatives

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ekadar's version from 2016-03-13 07:35

Branchial arch derivatives

Question Answer
1st arch cartilagemeckels cartilage, mandible, malleus, incus, mandibular ligament
1st arch muscles muscles of mastication, mylophoid, anterior belly of digastric
1st arch nervesCN V2 and V3
Disease of the 1st arch Treacher Collins syndrome
Disease of the 2nd arch congenital pharynocutaneous fistula
2nd arch cartilage stapes, styloid, less horn of hyoid, stylohyoid ligament
2nd arch muscles stapedius, sylohoid, platySma, posterior belly of digastroc
Nerves of 2nd arch CNVII (facial expression)
Cartilage of 3rd arch greater horn of hyoid
3rd arch muscle stylopharnygeus
4th-6th arch cartilagescartilages: thyroid, cricoid, cuneiform
Nerves of 4th arch CNX (superior laryngeal) swallow
Nerves of 6th arch CNX (recurrent laryngeal) speak
memorize

Pouches: Remember ears, tonsils, bottom to top

Question Answer
1st pouch derivativesmiddle ear, cavity, eustachian tube, mastoid air cell
2nd pouch epithelial lining of palatine tonsils
3rd pouchinferior parathyroids and thymus
4th pouch superior parathyroids
Branchial archesmesoderm
branchial cleftsectoderm
branchial pouches endoderm
memorize

Aortic arch

Question Answer
1st aortic arch maxillary artery
2nd arch stapedial artery
3rd arch common carotid
4th archl. aortic arch r. subclavian artery
6th arch proximal part of pulmonary arteries and l. ductus arteriosus
memorize

Derivatives

Question Answer
pseudounipolar cellsneural crest
autonomic ganglia cellsneural cress
schwann cellsneural crest
chromaffin cells of adrenal medullaneural crest
odontoblastsneural crest
melanocytesneural crest
meningesneural cress
cranipharyngiomabenign Rathke pouch tumor from surface ectoderm
aorticopulmonary septumneural crest
schwann cellsneural crest
melanocytes neural crest
PNS/ANSneural crest
chromaffin cellsneural crest
parafollicular cellsneural crest
pianeural crest
arachnoidneural crest
skull bonesneural crest
adrenal medullaneural crest
posterior pituitary (nuerohypophysis)neuroectoderm
retinaneuroectoderm
optic nerveneuroectoderm
pineal glandneuroectoderm
astrocytes neuroectoderm
ependymal cellsneuroectoderm
choroid plexusneuroectoderm
brainneuroectoderm
spinal cordneuroectoderm
skinsurface ectoderm
nasal/oral epitheliumsurface ectoderm
lenssurface ectoderm
corneasurface ectoderm
parotid glandsurface ectoderm
sweat glandsurface ectoderm
mammary glandsurface ectoderm
adenohypophysis (anterior pituitary)surface ectoderm
duramesoderm
muslcesmesoderm
bonesmesoderm
bloodmesoderm
genital tissuesmesoderm
dermismesoderm
microgliamesoderm
macrophagesmesoderm
spleenmesoderm
mesentarymesoderm
lymphaticsmesoderm
kidneysmesoderm
notochordmesoderm
adrenal cortexmesoderm
thyroid tissuesendoderm
liverendoderm
pancreasendoderm
gallbladderendoderm
lungsendoderm
biliary treeendoderm
thymusendoderm
branchial pouch turns intoendoderm
branchial arches turn intomesoderm
branchial clefts turn intoectoderm
metanephric mesoderm (blastema)gives rise to glomeruli, Bowman's space, proximal tubules, loop of HENle, and DCT
ureteric budcollecting systems of kidney
memorize

branchial arches

Question Answer
trigeminal nervebranchial arch 1
facial nervebranchial arch 2
glossopharyngeal nervebranchial arch 3
vagus nervebranchial arch 4
masseterbranchial arch 1
temporalisbranchial arch 1
medial pterygoidsbranchial arch 1
anterior belly of digastricbranchial arch 1
tensor tympanibranchial arch 1
tensor veli palatinibranchial arch 1
posterior belly of digastricbranchial arch 2
cricothyroidbranchial arch 4
levator veli palatinibranchial arch 4
thyroid and cricoid cartilagebranchial arch 4-6
muscles of larynxbranchial arch 4-6
stylopharyngeusbranchial arch 3
greater horn of hyoidbranchial arch 3
stapesbranchial arch 2
styloidbranchial arch 2
stylohyoidbranchial arch 2
platysmabranchial arch 2
meckelbranchial arch 1
mandiblebranchial arch 1
mastication musclesbranchial arch 1
memorize

 

Question Answer
alar platedorsal part of spinal cord aka sensory
basal platevertebral part of cord and becomes motor
memorize

Section 3