Embryology Flashcards
1
Q
Anterior pituitary
A
From oral ectoderm via Rathke’s pouch
2
Q
Posterior pituitary
A
From neural crest ectoderm - extension of primordial diencephalon
3
Q
Thyroid
A
From endodermal thyroid diverticulum, arising from the cleft between the 1st and 2nd pharyngeal pouches
Calcitonin-secreting C cells are from neural crest ectodermal origin via the ultimobranchial body
4
Q
Parathyroids
A
From the cleft between the 3rd and 4th pharyngeal arches (inferior) and the cleft just after the 4th pharyngeal arch (superior)
5
Q
Adrenal Cortex
A
Mesodermally derived from cells between the dorsal mesentery of the gut and the urogenital ridge
6
Q
Adrenal Medulla
A
Ectodermally derived from neural crest cells via primordial sympathetic ganglia
