Branchial Clefts Flashcards
1
Q
Branchial clefts are derived from
A
Ectoderm.
2
Q
Brachial arches derived from
A
Mesoderm (muscles and arteries), and neural crest (bone and cartilage)
3
Q
Branchial pouches
A
Endoderm
4
Q
1st branchial cleft derivative
A
external auditory meatus
5
Q
2nd through 4th branchial clefts
A
Temporary cervical sinus. Oliberated by proliferation of mesenchyme of second arch
6
Q
Persistant cervical sinus presnts as?
A
Branchial cleft cyst in lateral neck
