EAR DERIVATIVES Flashcards
1
Q
otic placode is derived from what?
A
2nd pharyngeal arch
2
Q
what does the otic vesicle differentiate into?
A
saccular and utriclar part
3
Q
the middle contains the tubotympanic recess (auditory tube and tympanic cavity) which is derived from where?
A
1st pharyngeal pouch
4
Q
the ossicles are from the middle ear and are comprised of the malleus, incus and stapes, also associated muscles and tendons? where are these derived from?
A
1st pharyngeal arch
2nd pharyngeal arch
1st and 2nd pharyngeal arch
5
Q
the external ear is comprised of what two main structures, name the derivatives also?
A
external acoustic meatus, distal part of 1st pharyngeal groove
auricle- auricular hillock from the mesenchymal prominences of 1st and 2nd pharyngeal arches
