Embryology Flashcards
what forms form the brachila arhces
face and neck
where do the brahcal arches form
around futre motha nd parynx
what brahcla arch disapers
arch 5
what embryological tissues make up the branchial arches
ectoderm, mesoderm and endoderm
what layer is the skeltal artery and nerve an cartilage form in
mesoderm
what nerve is first arch
mandibular barnce of trigeminal
what branch is 2nd arch
facial nerve
what branch is 3rd arch
glossopharyngeal
what branch is 4th arch
superior laryngela branch of the vaugus nerve
what branch is the 6th arch
recurent layngela brahcn of vagus
what is in the first arch
inner ear, incluidng maloeus and inus and meckle cartilage
what is in the second arch
staples
styloid process
stylohyoid liganent
lesser horn of the hyloid bone
what is in the 3rd branch
greater horn of the hyoid bone,
body of the hyoid bone
what is inthe 4th branch
thydoid cartilage
what is in the 6th branch
critocoid cartilage
what are the 5 parts that develp the face
1 - frontonasal process
2 - maxillary processes
2 - mandiblar proceses
what is the frontonasl proces
from the mesenchyme superior to the futre mouth
what is the mxailly proces origin form
from maxillary part of first brahcla arch mesodarm
where doe shte mandibular proces origin form
1st arch mesoderm
how does the nasal part form
ectodermal thickening happens
what is the philturm
where the medial nasl pres goes down war and connect together
stadges of palate formation
1 - meidal nasla process which forms philtrum
stage 2 - palastine shelfes grow inward
stadge 3 - palatine shelves meet in th midline to form the secondary palate
what proces forms mid part of nose
medial nase pocesses
wher do medila ndal proces come form
the forntal processes
what forms the crial vault flat bones
membarne bones form membranous ossificatio clavaria
what forms the base of skull bones
endochondila ossification
what forms the viscerocranium bones
branchla arches and sensoery capsules
how do mesenchymal ossify
directy
where does he mesenchyme derive from
mesoderm
what makes the mesencyme
neural crest cells
how does the mesencyme form into thebase of the skull
cartiles gorw sareound endyge and tey ossify creating neural crest
wher doe the sensory captules in the base of the skull ocme fomr
somites
what happens two the 2 parts oth etrip lameid disk where there is no mesoderm
mouth and anus formation
what layer folds to form neual tube
ectoderm
what cells in the neualr tube separtre
neuotrube crest cells to beomce a waide verity of stucre in the head and neck
which brahcil arches does the tounge deveop from
first 4
