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Oral Bio E2 > head and neck development > Flashcards

head and neck development Flashcards

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Biology 101 flashcards
1
Q

bilateral pharyngeal apparatus begins to develop…

A

4-5 weeks post fertilization

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2
Q

each pharyngeal arch contains

A
  • cartilaginous skeletal component (neural crest cell derived)
  • connective tissue (neural crest cell derived) and muscle component (paraxial mesoderm)
  • cranial nerve
  • aortic arch artery
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3
Q

2 prominences of the 1st pharyngeal arch

A
  • maxillary

- mandibular

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4
Q

maxillary prominence

A
  • cartilage: palatopterygoquadrate

- no adult reminants

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5
Q

mandibular prominence

A
  • large contribution to the face

- cartilage: meckel’s cartilage- leaves some adult structures

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6
Q

meckel’s cartilage gives rise to

A
  • incus
  • malleus
  • bone development is endochondral ossification
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7
Q

the perichondrium of mocker’s cartilage forms

A
  • anterior ligament so the malleus

- sphenomadibular ligament

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8
Q

maxillary and mandibular prominences develop via…

A

intramembranous ossification

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9
Q

structures from the maxillary process (superficial)

A
  • squamous part of the temporal bone
  • zygomatic
  • maxillary
  • premaxillary
  • nasal
  • lacrimal
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10
Q

structures from the maxillary process (deep)

A
  • palatine
  • vomer
  • pterygoid
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11
Q

structures from the mandibular process

A

-mandible

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12
Q

mesenchyme that forms the facial bones from the maxillary and mandibular prominences is

A

neural crest cell derived because they are facial bones (visceral cranium)

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13
Q

muscles of mastication from the 1st pharyngeal arch

A
  • temporalis
  • masseter
  • lateral pterygoid
  • medial pterygoid
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14
Q

other muscles from the 1st pharyngeal arch

A
  • tensor veli palatini
  • tensor tympani
  • anterior belly of the digastric
  • mylohyoid
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15
Q

what nerve supplies the muscles of the 1st pharyngeal arch

A

mandibular branch of the trigeminal

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16
Q

sensory supply to the skin of the face is via

A

all trigeminal branches v1, v2, v3

17
Q

cartilages and bone of the mandible are..

A

neural crest cell derived

18
Q

gnathic

A

of or relating to the jaw

19
Q

agnathia

A
  • mandible is absent

- caused by a deficiency of neural crest cell tissue in the area of the lower face

20
Q

mircrognathia

A
  • smalll mandible

- caused by a deficient neural crestt cell proliferation or migration

21
Q

2nd pharyngeal arch gives rise to

A

reichart’s cartilage

22
Q

reichart’s cartilage gives rise to

A
  • stapes
  • styloid process
  • stylohyoid ligament
  • lesser horn and upper body of the hyoid bone
23
Q

muscles of the 2nd pharyngeal arch

A
  • muscle sof facial expression
  • stapedius
  • stylohyoid
  • posterior belly of the digastric
24
Q

nerve of the 2nd pharyngeal arch

A

CN VII - facial nerve

25
Q

3rd pharyngeal arch

A
  • lower and upper horn of the hyoid bone
  • muslce: stylopharyngeus
  • nerve: CN IX- glossopharyngeal n
26
Q

4th and 6th pharyngeal arches

A
  • all formed from lateral plate mesoderm
  • ossification does not occur in these cartilages
  • give rise to the 9 laryngeal cartilages
27
Q

9 laryngeal cartilages from 4th and 6th pharyngeal arch

A
  • epiglotic
  • thyroid
  • cricoid
  • arytenoid
  • corniculate
  • cuneiform
28
Q

muscles of 4th and 6th pharyngeal arch

A
  • muscles of the soft palate
  • muscles of the pharynx
  • intrinsic muscles of the larynx
  • skeletal muscle of the upper esophagus
29
Q

muscles of the soft palate

A
  • lecator veli palatini
  • palatoglossus
  • palatopharyngeous
  • uvulae
30
Q

muscles of the pharynx

A
  • superior, middle, and inferior pharyngeal constrictors
  • palatopharyngesou
  • salpingopharyngeous
31
Q

intrinsic muscles of the larynx

A
  • cricothyroid
  • thyroarytenoid
  • posteiro crico-arytenoid
  • lateral cricoarytenoid
  • transverse and oblique arytenoids
  • vocalis
  • aryepiglotticus
  • thyroepiglotticus
32
Q

vestige

A

-a degenerate structure, remnant or trace of a rudimentary structure in the embryo

33
Q

brachial vestige

A
  • remnant of pharyngeal cartilages that do not disappear
  • can be cartilage or bone
  • usually immediately below the skin at the inferior portion of the SCM

Oral Bio E2 (11 decks)

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