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Flashcards in Head and Neck Anatomy Deck (29)
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1

What is contained in the anterior cranial fossa?

frontal lobes

2

What is the primary foramen of the anterior cranial fossa?

cribriform plate: supports the olfactory bulbs and CN1

3

What does the middle cranial fossa contain?

temporal lobes and pituitary gland

4

What does the posterior cranial fossa contain?

brainstem and cerebellum

5

What is in the superior orbital fissure of the middle fossa?

Oculomotor n (CN III)
trochlear n (CN IV)
Ophthalmic n (CN V)
Abducen n (CN VI)

6

What is in the optic canal of the middle fossa?

Optic n (CN III)
Ophthalmic artery

7

What is in the foramen rotundum of the middle fossa?

Maxillary nerve (V2)

8

What is in the foramen ovale of the middle fossa?

Mandibular n (V3)

9

What is in the carotid canal of the middle fossa?

internal carotid artery
internal carotid nervous plexus (sympathetic)

10

What is in the foramen spinous of the middle fossa?

middle menial artery

11

What is in the internal acoustic meatus of the posterior fossa?

facial nerve (CN VII)
Vestibulocochlear nerve (CN VIII)

12

What is in the jugular foramen of the posterior fossa?

sigmoid sinus
glossopharyngeal nerve (CN IX)
vagus nerve (CN X)
accessory nerve CN (XI)

13

What is in the hypoglossal canal of the posterior fossa?

hypoglossal n (CN XII)

14

What is in the foramen magnum of the posterior fossa?

vertebral arteries
accessory nerves (spinal contribution to CN XI)
anterior and posterior spinal arteries

15

What are the foramina of anterior fossa?

foramina in the cribriform plate

16

What are the foramina of middle fossa?

superior orbital fissure
optic canal
foramen rotundum
foramen ovale
carotid canal
foramen spinosum

17

What are the foramina of posterior fossa?

internal acoustic meatus
jugular foramen
hypoglossal canal
foramen magnum

18

CN I name and function?

olfactory
special sense of smell

19

CN II name and function?

optic
special sense vision

20

CN III name and function?

oculomotor
motor to most extraocular muscles of they and parasympathetic to the pupillary sphincter and ciliary muscles of the eye

21

CN IV name and function?

trochlear
motor to superior oblique muscle of the eye

22

CN V name and function?

trigeminal
ophthalmic division (V1): sensory to scalp, forehead, and nose, cornea and conductive of the eye
Maxillary division (V2): sensory to cheeks, lower eye lid, nasal mucosa, upper lip, upper teeth and palate
Mandibular division (V3): sensory to anterior 2/3 of tongue, chin, and lower teeth. Motor to the muscles of mastication (chewing)

23

CN VI name and function?

Abducens
motor to lateral rectus muscle of the eye

24

CN VII name and function?

facial
special sense of test form the anterior 2/3 of tongue. motor to muscles of facial expression. parasympathetic to lacrimal submandibular and sublingual salivary glands

25

CN VIII name and function?

vestibulocochlear
special sense of hearing and balance

26

CN IX name and function?

glossopharyngeal
sensory to posterior 1/3 of tongue, palate and oropharynx (afferent limb of gag reflex). motor to pharynx (swallowing). special sense of taste from posterior 1/3 of tongue. parasympathetic to the parotid salivary gland

27

CN X name and function?

vagus
sensory to external ear, larynx and esophagus. motor to the muscle of the pharynx, larynx, palate and esophagus (speech and swallowing efferent limb of gag reflex)
parasympathetic to thoracic and abdominal organs

28

CN XI name and function?

spinal accessory
motor to sternocleidomastoid and trapezius muscles

29

CN XII name and function?

hypoglossal
motor to intrinsic and extrinsic muscle of the tongue