In this visual medical lecture Dr. Aizaz from MedicoVisual talks about the development of tympanic cavity (middle ear cavity), pharyngotympanic tube, epitympanic recess, middle ear ossicles, external ear (external auditory meaturs and pinna or auricle) and the physiology of impedance matching mechanism.
00:00 Introduction
00:43 Why is there a need of middle ear cavity and external auditory meatus
04:37 Development of External Auditory Meatus from Dorsal end of First Pharyngeal cleft
07:40 Tubotympanic recess and development of middle ear cavity and auditory tube
12:09 Impedance Matching mechanism (basic physiology)
13:51 Development of Middle Ear Bones (Ossicles; Malleus, Incus and Stapes)
19:44 Embryology of epitympanic recess and middle ear ligaments
22:33 Mastoid Air cells and Mastoid Antrum
23:50 Stapedius and Tensor Tympani muscle
28:53 Tympanic Membrane Embryology
30:19 Pinna / Auricle of the external ear