Anatomy and Physiology XXIII Flashcards Preview

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Flashcards in Anatomy and Physiology XXIII Deck (25)
1

What travels through the foramen rotundum?

CN V maxillary branch (p.435)

2

What travels through the foramen ovale?

CN V mandibular branch (p.435)

3

What travels through the foramen spinosum?

Middle meningeal artery (p.435)

4

Name five openings/ channels of the middle cranial fossa.

Optic canal, superior orbital fissue, foramen rotundum, foramen ovale, foramen spinosum (p.435)

5

Throuugh which openings do the branches of CN V exit the brain?

Opthalmic- superior orbital fissure; Maxillary- Foramen Rotundum; Mandibular- Foramen Ovale ("Standing Room Only") (p.435)

6

Name four openings/ channels of the posterior cranial fossa.

Internal auditory meatus, jugular foramen, hypoglossal canal, foramen magnum (p.435)

7

Through what general area do CN VII-XII travel?

Posterior cranial fossa through the temporal or occipital bones (p.435)

8

What travels through the internal auditory meatus?

CN VII, VII (p.435)

9

Through what opening does CN XI travel?

Jugular foramen (p.435)

10

Through what opening does the jugular vein travel?

Jugular foramen (p.435)

11

What travels through the jugular foramen?

CN IX, X, XI, jugular vein (p.435)

12

Through what opening does CN XII travel?

Hypoglossal canal (p.435)

13

What travels through the hypoglossal canal?

CN XII (p.435)

14

Through what opening do the spinal roots of CN XI travel?

Foramen magnum (p.435)

15

Through what opening does the brainstem travel?

Foramen magnum (p.435)

16

Through what opening do the vertebral arteries travel?

Foramen magnum (p.435)

17

What travels through the foramen magnum?

Spinal roots of CN XI, brainstem, vertebral arteries (p.435)

18

What is the cavernous sinus?

A collection of venous sinuses on either side of the pituitary (p.436)

19

What drains into the cavernous sinus?

Blood from the eye and superficial cortex (p.436)

20

To where does the cavernous sinus drain?

Into the internal jugular vein (p.436)

21

What structures pass through the cavernous sinus en route to the orbit?

CN III, IV, V opthalmic, V maxillary, CN VI, and postganglionic sympathetic fibers. Cavernous portion of the internal carotid artery also passes through (p.436)

22

Generally, what structures pass through the cavernous sinus?

The nerves that control extraocular muscles, CN V opthalmic, CN V maxillary (p.436)

23

What symptoms are caused by cavernous sinus syndrome?

Opthalmopolegia and decreased corneal and maxillary sensation with normal vision (p.436)

24

What are three possible causes of cavernous sinus syndrome?

Mass effect, fistula, thrombosis (p.436)

25

What signs and symptoms are characteristic of a CN V motor lesion?

Jaw deviation towards side of lesion due to unopposed force from opposite pterygoid muscle (p.436)