Primary Palate Formation: forms from?
what does it separate? gives rise to?
Intermaxillary Segment
nasal and oral cavities
anterior incisors
Secondary Palate Formation:
bilateral palatal shelves form from?
what direction do they grow at first?
then what do they do?
once they fuse what do they form?
Maxillary processes
downward
snap upward
secondary palate
what does the tongue do so it doesnt get in the way of the "snap"?
from where to where?
moves
from the pharynx to the oral cavity
Maxillary Processes
Secondary Palate Formation
gives rise to
maxillar canines
posterior maxillary teeth
soft palate
uvula
when the palate is complete what is fused?
if there is failure of fusion what is it called?
the primary and secondary palate
Cleft Uvula and Cleft Palate
Cleft Uvula
Fig A Pg 46 mildest form
palatal shelves didnt fuse completely in the back
(milk up the nose)
Bilateral Cleft of the Secondary Palate
Fig B Pg 46 Palatal shelves didnt fuse to each other at all
II. Nasal Cavity and Septum Development
Septum develops from the ----- then fuses with the -----.
what does it divide?
what is "deviated"
intermaxillary segment palate
nasal cavity
cause snoring and other sinus problems
III. Tongue Development
where does it happen?
then where does it move to?
pharynx
oral cavity
Tongue Development
Bodyof tongue formation starts with:
A. tuberculum impar where at?
behind branchial arch I
Tongue development
Body of tongue starts with tuberculum impar (A) then two lateral lingual swellings (b)
Two lateral lingual swellings B. develop on each side of the tuberculum impar.
tongue development
body of tongue starts with tuberculum impar (A) then two lateral lingual swellings (b) what do these form?
these fuse and overgrow the tuberculum impar to form the body of the tongue.
tongue development
body of tongue
midline lingual frenum what do the cells do?
what is it called when this is too long and restricts movement?
midline lingual frenum
ankyloglossia
tongue development
Base of the tongue formation: branchial arch 2 & 4
C. Copula what is i,t where does it come from and what does it form?
is a swelling from branchial arch 2
forms the base of the tongue
Tongue Development
Base of the tongue Formation
D. Epiglottic swelling were does it come from and what does it form?
comes from branchial arch 4
will become the epiglottis that covers the trachea when you swallow
Tongue Development
Completion of Tongue Formation
Copula fuses with?
marked by?
Tongue body
sulcus terminalis (where body and base meet)
Tongue Development
Completion of Tongue Formation
The ------ points backward to a depression called the -----.
sulcus terminalis
foramen cecum
tongue Development
Completion of Tongue formation
the foramen cecum is the beginning of the?
thyroglossal duct
(thyroid develops here and migrates to neck)
Tongue Development
completion of tongue formation
the tongue is innervated by ---- of nerves because the tissue came fromso many different branchial arches.
lots (five)
Author
apandastar
ID
102794
Card Set
Chapter 5 development of orofacial structures
Description
palatal development, nasal cavity and septum development & tongue development.