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Download Embryonic Development of the Oropharynx and Branchial Arches and more Quizzes Health sciences in PDF only on Docsity!
the oropharynx includes
the primitive oral cavity and the pharynx
TERM 2
the oral pit develops
DEFINITION 2
during the 4th week when the neural plate bends forward
and the neural folds develop the forebrain
TERM 3
the pharynx is developed from
DEFINITION 3
the foregut
TERM 4
the pocket that appears between the head
and the heart
DEFINITION 4
becomes the oral cavity
TERM 5
the oropharyngeal membrane ruptures
DEFINITION 5
in the 5th week and opens the oral cavity
the branchial (pharyngeal) arches begin to
form
inferior to the stomodeum during the 4th week
TERM 7
the branchial arches are bars of tissues
with
DEFINITION 7
a mesenchyme core (formed by neural crest cells)
TERM 8
there are _ pairs of
arches
DEFINITION 8
6 - but the 5th is so rudimentary in humans it is absent or
included with the 4th arch
TERM 9
arch I is also
called
DEFINITION 9
the mandibular
TERM 10
arch II is
named
DEFINITION 10
the hyoid arch
by the _ week, __ develop between and
separate the arches
5th; vertical grooves
TERM 17
within the pharynx __ develop which correlate
with the branchial grooves on the external
surface of the embryo
DEFINITION 17
pharyngeal pouches
TERM 18
the first branchial groove forms
DEFINITION 18
the external auditory canal
TERM 19
mesenchyme forms in the first branchial
groove, developing into the
DEFINITION 19
tympanic membrane
TERM 20
at week _ the blood supply of the face & neck
switches from the internal to the external _
DEFINITION 20
7; carotid
during week 5, _ _ begin to appear in the 1st
arch
muscle cells
TERM 22
the muscle cells spread within the 1st arch
during weeks _ _ _
DEFINITION 22
TERM 23
the muscles of mastication
are
DEFINITION 23
masseters, medial pterygoids, lateral pterygoids, and
temporalis
TERM 24
during week _, the 2nd arch cells develop and
spread; by week _ those cells have formed
the _ _ _ _
DEFINITION 24
7; 10; muscles of facial expresion
TERM 25
by the end of week _, fibers from the _ nerve
have entered the _ arch and the _ nerve has
entered the _ arch
DEFINITION 25
7; 5th (trigeminal); mandibular; 7th (facial); hyoid
the tounge has _ _ _ _ _ because it arises from
the _ _ and picks up nerves supply as it _ to
the floor of the mouth
several different sources of innervation; occipital myotome;
migrates
TERM 32
the branchial arch skeleton initially develops
as
DEFINITION 32
cartilaginous bars
TERM 33
the bones of the middle ear are the
DEFINITION 33
malleus, incus, and stapes
TERM 34
_ _ appears bilaterally in the 1st arch
DEFINITION 34
Meckel's cartilages
TERM 35
the contact point of the malleus and incus
form the lower jaw in the first 20 weeks which
is followed by the development of the
DEFINITION 35
Human temporomandibular joint (TMJ)
Reichert's cartilage forms in the _ arch
2nd
TERM 37
the protective bones of the brian and the
facial bones are
DEFINITION 37
membrane bones
TERM 38
membrane bones are formed directly from
DEFINITION 38
connective tissue
TERM 39
the bones of the craniofacial region form a
system of articulations called
DEFINITION 39
sutures
TERM 40
sutures are
DEFINITION 40
growth sites
