Arches Flashcards
(41 cards)
When does arch development begin? when does it end? what do they form?
week 4. week 10. contribute to formation of face, oral cavity, nasal cavity, neck, pharynx, larynx
What are the 3 different types of interactions?
Reciprocal
Dynamic
Sequential
What are the 3 different types of interactions between two tissues?
instructive
facilitatve/ permissive
What are the primary germ layers and what do they form.
- Ectoderm: comes from epiblast layer, makes the outer skin and neural tube.
- Mesoderm: comes from the migratory cells of the epiblast layer, makes about everything else.
- Endoderm: comes from hypoblast layers, makes the gut.
- Neural crest/ ectomesenchyme: comes from ectoderm (neural tube formation during its folding stages), forms the structures of the head and neck.
what genes determine the different types of neural crest cells?
homeobox
Name the constituents of all arches
1, 2, 3, 4, 6. see notes
What arch is treacher collins associated with? What is this disorder?
1st pharyngeal arch. failure on NCCs to migrate, facial bone hypoplasia, GENETIC, dental anomalies: enamel deformities, displaced 6s, tooth agenesis. 1 in every 10,000 births.
which arch forms the sphenomandibularligament
1st arch
which arch forms the superior body of hyoid
2nd arch
which arch forms the anterior 2/3rds of tongue
1st arch
which arch form the base of tongue?
3rd arch
which arch forms the stylohyoid ligament
2nd arch
which arch forms the stylopharyngeus muscle
3rd arch
which muscle forms arytenoid and cricoid cartilages?
6th arch
which arch forms the epiglottis
4th arch
which arch forms the soft palate
the 4th arch
which arch forms the pharyngeal constrictor
4th arch
which arch forms the thyroid gland
2nd arch
which arch forms the tonsil
2nd arch
which arch forms the hyoid
2nd and 3rd.
which pouch forms the palatine tonsil/ tonsillar fossa
2nd pouch
Which pouch forms the inferior parathyroid
3rd pouch
Which pouch forms the superior parathyroid
4th pouch
Which pouch forms the thymus
3rd pouch
