Ossicles #3

Question 1

Describe the short process (of the incus).

Answer 1

• Horizontal projection

Question 2

What is another name for the short process?

Answer 2

• Crus breve

Question 3

What is another name for the long process?

Answer 3

• Crus longum

Question 4

Detail about the long process (of the incus)

Answer 4

• Can occasionally be seen through the tympanic membrane

Question 5

How does the lenticular process articulate?

Answer 5

• Articulates with the head of the stapes

Question 6

How does the malleolar facet articulate?

Answer 6

• Articulates with the malleus

Question 7

List 2 details about the stapes.

Answer 7

• Third bone in the ossicular chain
• Smallest bone in the human body

Question 8

List the structures of the stapes.

Answer 8

• Head (caput)
• Neck
• Posterior crus and anterior crus
• Footplate (base)

Question 9

How does the head (caput) of the stapes articulate?

Answer 9

• Articulates with the lenticular process of the incus

Question 10

What does the neck (of the stapes) do?

Answer 10

• Divides into two to become the crura

Question 11

Describe the posterior crus and anterior crus

Answer 11

• Leg-like structures

Question 12

Describe the footplate (base) of the stapes.

Answer 12

• Oval shaped
• Fits into the oval window of the inner ear