page 237-256 Flashcards
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pouch 1
Tympanic membrane
Auditory tube
Middle ear cavity
Lymphatic nodulePalatine tonsil
pouch 2
Inferior parathyroid gland
thymus
pouch 3
pouch 4
Superior parathyroid gland
Ultimobranchial body
Gives rise to thyroid parafollicular/C-cells
■ Calcitonin
Ultimobranchial body
Rudimentary structure (becomes part of pouch 4)
pouch 5
https://drive.google.com/open?id=0B8uJUY-tie8GVjhGVUg1Sk9Tc3M
https://drive.google.com/open?id=0B8uJUY-tie8GYVlhXzR1RlhBam8
Two mandibular processes (branchial arch 1) merge.
■ Medial ends merge at week 4.
■ Mandibular processes → merge to form lower lip.
mandible
maxila
Two maxillary processes (branchial arch 1) merge.
■ Form upper cheek regions and most of upper lip.
Form with growth of forebrain.
■ Develop into forehead and nose.
FRONTAL NASAL PROCESSES
Two medial nasal processes merge.
■ Form philtrum of upper lip.
front nasal process
Thickened areas of specialized ectoderm.
■ Located on either side of the frontal nasal process.
■ Give off elevations at their margins.
nasal placodes
Lateral nasal processes (2).
■ Form sides/alae of nose.
NASAL PLACODES
Medial nasal processes (2).
■ Form bridge of nose.
■ Nostrils.
■ Upper lip philtrum.
NASAL PLACODES
mouth and Oral cavity
Begins as a slight depression on the stomodeum.
■ Located between branchial arch 1 and the forebrain.