8 - Cranial Nerves, Brain, Vessels Flashcards Preview

Division III > 8 - Cranial Nerves, Brain, Vessels > Flashcards

Flashcards in 8 - Cranial Nerves, Brain, Vessels Deck (33):
1

The EXTERNAL carotid artery goes to

Head & face

2

The -- aa enter cranium thru foramen magnum

Vertebral aa

3

Middle meningeal a enters cranium thru

Foramen spinosum (smallest hole)

4

The INTERNAL carotid aa divide into -- & -- -- aa that supply the brain

Anterior & middle cerebral aa

5

-- aa merge to form the basilar artery, which has branches to form the Circle of Willis

Vertebral

6

Arteries delivering blood to circle of Willis

Internal carotid a
Basilar a

7

4 arteries forming the circle of Willis

-anterior cerebral a (from internal carotid a)
-posterior cerebral a (from basilar a)
-posterior communicating a
-anterior communicating a (connecting anterior cerebral aa)

8

Most of the venous blood of cranium drains thru the

Dural venous sinuses
-no valves

9

Name the 4 main components of the dural venous sinus system

1. Sagittal sinus - superior & inferior
2. Straight sinus
3. Transverse sinus - left & right
4. Sigmoid sinus - left & right

10

The external and internal JUGULAR veins drain into the

Subclavian vein

11

Oh Oh Oh, To Touch And Feel Very Good Velvet, AH!

Olfactory n
Optic n
Oculomotor n
Trochlear n
Trigeminal
Abducens
Facial
Vestibulocochlear
Glossopharyngeal
Vagus
Accessory
Hypoglossal

12

Some Say Money Matters, But My Brother Says Big Boobs Matter Most

Sensory
Motor
Both

13

Nerve, sensory or motor, exit:
CN I

Olfactory
Sensory: smell
Cribriform plate

14

Nerve, sensory or motor, exit:
CN II

Optic n
Sensory
Exit: optic canal

15

Nerve, sensory or motor, exit:
CN III

OculoMOTOR m
Motor: extrinsic eye m
Exit: superior orbital fissure

16

Nerve, sensory or motor, exit:
CN IV

Trochlear n
Motor: superior oblique m of the eye
Exit: superior orbital fissure

17

CN V

Trigeminal n
Both
V1: opthalmic; exits thru superior orbital fissure
V2: maxillary; exits thru foramen rotundum
V3: mandibular: exits thru foramen ovale

18

CN VI (6)

Abducens n
Motor: lateral rectus m of eye
Exit: superior orbital fissure

19

CN VII

Facial n
Both: sensory for taste; motor for glands
Exit: internal acoustic meatus

20

CN VIII

Vestibulocochlear n
Sensory: hearing
Exit: internal acoustic meatus

21

CN IX (9)

Glossopharyngeal n
Both!!
Sensory: posterior 1/3 of tongue
Motor: styloPHARYNgeus m
Exit: jugular foramen

22

CN X (10)

Vagus n
Both
Exit: jugular foramen (heart shaped)

23

CN XI (11)

(Spinal) accessory n
Motor: trapezius m and sternocleidomastoid m
Exit: jugular foramen

24

CN XII

Hypoglossal n
Motor: tongue m
Exit: hypoglossal canal

25

What exits here: Cribriform plate

CN I aka olfactory
*smell, sight, taste...smell comes before sight (optic n, CN II)

26

What exits here: optic canal

CN II aka Optic n

27

What exits here: superior orbital fissure

CN III: oculomotor
IV: Trochlear
V1: opthalmic
VI: abducens

28

What exits here: Internal acoustic meatus

CN VII - facial
CN VIII- Vestibulocochlear

29

What exits here: jugular foramen

Internal jugular v
CN IX-glossopharyngeal (tongue)
CN X-vagus n
CN XI-accessory n

30

What exits here: hypoglossal canal

CN XII

31

What exits here: forearm spinosum

Middle meningeal a

32

What exits here: foramen magnum

Spinal cord and vertebral aa => basilar a => posterior cerebral a

33

The internal carotid a goes to the

Brain