Head & Neck Anatomy

Front 1

Back 1

Front 2

Back 2

Front 3

Back 3

Front 4

Back 4

Front 5

Back 5

Front 6

Back 6

Front 7

Back 7

Front 8

Back 8

Front 9

Back 9

Front 10

Back 10

Front 11

Back 11

Front 12

Back 12

Front 13

Back 13

Front 14

Back 14

Front 15

Back 15

Front 16

Back 16

Front 17

Back 17

Front 18

Back 18

Front 19

Back 19

Front 20

Back 20

Front 21

Back 21

Front 22

Back 22

Front 23

Back 23

Front 24

Back 24

Front 25

Back 25

Front 26

Back 26

Front 27

Back 27

Front 28

Back 28

Front 29

Back 29

Front 30

Back 30

Front 31

Back 31

Front 32

Back 32

Front 33

Back 33

1. Cribiform plate
2. Sphenoid sinus
3. Hypophyseal fossa
4. Dorsum sella
5. Clivus
6. Pharyngeal tonsil
7. Choana
8. Torus tubarius
9. Pharyngeal orifice of pharyngotympanic tube
10. Dens of axis
11. Posterior boundary of pharynx is the constrictor muscles
12. Soft palate, palatine septum
13. Hard palate
14. Upper lip
15. Maxilla
16. Nasal septum
17. Frontal sinus
18. Pharyngeal recess

Front 34

Occipitofrontalis muscle
- Attachments
- Functions

Back 34

- Extends from superior nuchal line to skin of eyebrows
- Allows for movement of scalp against periosteum, raises eyebrows

Front 35

Buccinator muscle
- Attachments
- Functions

Back 35

- Arises from pterygomandibular raphe (ligamentous band of buccopharyngeal fascia) in the back, courses forward in cheek to blend into orbicularis oris
- Compresses cheek against teeth, helping to empty food from vestibule during chewing; useful while playing musical instruments (controlled expression of air)

Front 36

Platysma muscle
- Attachments
- Functions

Back 36

- Extends from skin over mandible through superficial fascia of neck into skin of upper chest
- Tightens neck skin, depresses angles of mouth

Front 37

Facial artery course

Back 37

- Arises from external carotid
- Passes deep to SMG and cross mandible in front of masseter
- Tortuous course across face up to medial angle of eye, where it anastomoses with branches of ophthalmic artery
- Gives labial branches to lips; superior labial artery enters nostril to supply nasal vestibule

Front 38

Blood supply to scalp

Back 38

Occipital, posterior auricular and superficial temporal arteries

Front 39

Artery that courses through face parallel to parotid duct
- What is it a branch of?

Back 39

Transverse facial artery
- Branch of the superficial temporal artery

Front 40

Venous drainage of the face

Back 40

- Superficial temporal and maxillary veins join within substance of parotid to form RMV
- Facial vein joins anterior RMV to drain into IJV

Front 41

How do infections spread from the face into the cranium?

Back 41

Facial vein communicates with pterygoid venous plexus and veins in orbit and each of these has connections to the cavernous sinus

Front 42

V1 carries sensation from...

Back 42

Upper eyelid, skin of forehead, skin of nose

Front 43

Cutaneous branches of V1 (lateral to medial)

Back 43

- Lacrimal
- Supraorbital
- Supratrochlear
- Nasal

Front 44

V2 carries sensation from...

Back 44

Lower eyelid, upper lip, face of to zygomatic prominence of cheek

Front 45

Cutaneous branches of V2

Back 45

- Infraorbital
- Zygomaticofacial
- Zygomaticotemporal

Front 46

V3 carries sensation from...

Back 46

Lower lip, lower part of face, auricle, scalp in front of and above auricle

Front 47

Cutaneous branches of V3

Back 47

- Mental
- Buccal
- Auriculotemporal

Front 48

Extratemporal facial nerve course, branches

Back 48

After emerging from stylomastoid foramen, VII lies within substance of parotid where it gives off its five terminal branches
- Temporal branch: occipitofrontalis and orbicularis oculi
- Zygomatic branch: orbicularis oculi
- Buccal branch: travels with parotid duct and innervates buccinator and orbicularis oris, as well as muscles of nose and upper lip
- Mandibular branch: orbicularis oris and muscles of lower lip
- Cervical branch: platysma