Spinal Anatomy Part II

Question 1

Whoch bone is in contact with oval window?

Answer 1

Stapes

Question 2

What structures are inside the oval window?

Answer 2

Hair cells AKA organ of corti AKA spiral ganglion. CN8

Question 3

What happens when hair cells are rocked?

Answer 3

Depolarized –> Na+ rushes in. Hair cells fire cochlear nucleus

Question 4

Cochlear nucleus leaves oval window via __ __ to the __

Answer 4

trapezoid body (secondary neurons)
brainstem (superior olive in pons)

Question 5

Where is superior gyrus and what is AKA?

Answer 5

Temporal lobe

“Gyrus of Heschi”

Question 6

What are exampls of synchondrosis?

Answer 6

Epiphyseal plates

hyaline cartilage joints

Question 7

What are examples of Synarthrosis?

Answer 7

Sutures of skull
Teeth
*Immovable!

Question 8

What is an example of syndesmosis?

Answer 8

Interosseous membrane, such as tib/fib and radio/ulnar

Question 9

What is a schindylesis?

Answer 9

Perpendicular articulation of Ethmoid and Vomer

Question 10

What kind of joints are SI joints?

Answer 10

Atypical Diarthroidial

Question 11

Where does Posterior Atlantooccipital ligament run?

Answer 11

C1 to C0. Can form an Arcuate foramen if too much calcium

Question 12

Where is largest transverse diameter of spinal cord?

Answer 12

C1

Question 13

How many IVDs are there?

Answer 13

23

-make up 25% of height of spine

Question 14

After age __, the disc is avascular

Answer 14

20

Question 15

Rotatores cause contralateral rotation of the spine for __ segments

Answer 15

1-2

Question 16

Multifudus cause contralateral rotation of the spine for __ segments

Answer 16

2-4

Question 17

Semispinalis cause contralateral rotation of the spine for __ segments

Answer 17

3-6

Question 18

There are __ dentate ligaments that connect the __ to the __ along the spinal cord

Answer 18

21
Pia
Dura