Ear Development: Middle Ear

Question 1

Middle ear development

Answer 1

1. Derived from tubotympanic recess which grows outwards
2. Its blind end expands to from tympanic cavity
3. Its stalk forms pharyngo-tympanic tube

Question 2

Mesoderm surrounding recess gives rise to

Answer 2

1. Middle ear ossicles
2. Middle ear muscles

Question 3

Middle ear ossicles

Answer 3

1. Malleus and incus
2. Stapes

Question 4

Middle ear muscles

Answer 4

1. Tensor Tympani
2. Stapedius

Question 5

Malleus and incus

Answer 5

Derived from 1st arch

Question 6

Stapes

Answer 6

Derived from 2nd arch

Question 7

Tensor Tympani

Answer 7

Derived from 1st arch

Question 8

Stapedius

Answer 8

Derived from 2nd arch