pharyngeal arches

Question 1

2 types of union

Answer 1

merging

fusion

Question 2

stomodeum

Answer 2

oral pit, becomes the mough

Question 3

structures from frontal process

Answer 3

forehead
middle nose
upper lip and dental arch

Question 4

structures from maxillary process of mandibular arch (1)

Answer 4

cheeck
upper lip
maxillary
zygomatic
part of temporal

Question 5

structures from mandibular process of mandibular arch (1)

Answer 5

mandible

lower jaw

Question 6

dimple formation

Answer 6

meeting of the 2 mandibular processes

Question 7

buccopharyngeal membrane

Answer 7

covering of stomodeum

where ectoderm meets endoderm

Question 8

nasal placodes

Answer 8

thickened epithelium on frontal process

Question 9

nasal pit

Answer 9

future nostril, in the center of nasal placode

Question 10

nasomedial process forms

Answer 10

upper lip and jaw with the maxillary process

primary palate

Question 11

nasolateral process forms

Answer 11

sides and wings of nose

Question 12

nasolacrimal groove

Answer 12

between the nasolateral process and maxillary process

closes to form the lacrimal duct

Question 13

intermaxillary segment forms

Answer 13

formed from the merging of the nasomedial segments

forms the middle of nose, philtrum of upper lip, dental arch, and primary palate

Question 14

mandibular process forms

Answer 14

lower lip and jaw

Question 15

maxillary process

Answer 15

upper lip and jaw with nasomedial process

palatal shelves–> secondary palates

Question 16

cleft lip

Answer 16

failure of fusion between the nasomedial process and maxillary process

Question 17

macrostomia

Answer 17

failure of the maxillary and mandibular processes to fuse

mouth is large

Question 18

microstomia

Answer 18

over fusion of maxillary and mandibular processes

Question 19

frontaonasal dysplasia

Answer 19

underdevelopment of frontal prominence

bifid nose and wideset eyes

Question 20

oblique facial cleft

Answer 20

failure of nasolateral process and maxillary processes to join

Question 21

what becomes ears

Answer 21

bumps between the hyoid arch (3) and mandibular process (part of 2)

Question 22

pharyngeal cleft

Answer 22

grooves on outside between arches

Question 23

pharyngeal pouch

Answer 23

groove on inside between arches

Question 24

cleft 1 becomes

Answer 24

external auditory meatus

Question 25

cleft 2-4

Answer 25

fuse to become cervical sinus

Question 26

cervical/branchial cysts

Answer 26

failure of the cervical sinus to disappear | always latearl

Question 27

pharyngeal clefts are

Answer 27

ectoderm

Question 28

pharyngeal pouches are

Answer 28

endoderm

Question 29

pouch 1

Answer 29

auditory tube and middle ear cavity

Question 30

pouch 2

Answer 30

palatine tonsil

Question 31

pouch 3

Answer 31

lower parathyroid glands and thymus

Question 32

pouch 4

Answer 32

superior parathyroid glands and ultimobranchial body

Question 33

ultimobranchial body

Answer 33

becomes parafollicle cells in thyroid

Question 34

where does thyroid come from

Answer 34

foramen cecum migrates down

Question 35

throglossal cysts

Answer 35

thyroid remnants from the migration of the foramen cecum to become the thyroid always at midline

Question 36

mandibular hyperplasia

Answer 36

mandible underdevelopment | deformed ears

Question 37

incisive foramen

Answer 37

midline where primary and secondary palates meet

Question 38

cleft palate

Answer 38

failure of palates to fuse, can be primary or secondary, unilateral or bilateral

Question 39

anterior 2/3 of tongue is from

Answer 39

first arch 2 lateral lingual swellings tuberculum impar

Question 40

posteiror 1/3 of tongue and root is from

Answer 40

arches 3 and 4

Question 41

tongue muscles are from

Answer 41

occipital somites

Question 42

ankloglossia

Answer 42

frenulum extends to tongue tip

Question 43

microglossia

Answer 43

tongue is too small

Question 44

macroglossia

Answer 44

tongue is too big

Question 45

bifid tongue

Answer 45

incomplete fusion of lateral lingual swellings

Question 46

frenectomy

Answer 46

cut frenulum

Question 47

taste sensation CN

Answer 47

VII, IX, X

Question 48

muscles from branchial arches innervation

Answer 48

V, VII, IX, X, XI

Question 49

muscles from occipital somites innervation

Answer 49

III, IV, VI, XII

Question 50

parasympathetic CN

Answer 50

III, VII, IX, X

Question 51

tongue innervation

Answer 51

V, VII, IX, X, XII