Introduction to Head and

Neck Anatomy

Sanjaya AdikariDepartment of Anatomy

1

Boundaries of the head & neck

Spinous process of C7

Acromian

2

Bones3

Facial skeleton

Cervical Vertebrae

Skull vault

Skull base

Spinal cord

Foramen magnum

Brain and the spinal cord

4

5

CNS PNS

Somatic

CNS PNS

Autonomic

Nervous sytem

1

3

4

5

6

= forebrain (cerebrum)

1

5

4

3

6

22+

= midbrain

= hindbrain

4

3

5

= brainstemmidbrain

pons

medulla

Main divisions of the brain6

Cranial nerves7

Studying cranial nerves

Should know

1. Position of nucleus

2. Course within brain stem

3. Emerging point from brain stem

4. Point of exit from the cranial cavity

5. Extracranial course

6. Distribution

8

9

Spinal Nerves10

11

Afferent (sensory)Somatic Visceral

Efferent (motor)Voluntary Involuntary/Autonomic

Eye Ear Nose Tongue Body

Mind

Contract OR Secrete

Muscles of facial expression

Frontalis

Orbicularis oculi

Orbicularis oris

Zygomaticus minor & major

Levator labii muscles & levator anguli oris

Depressor anguli oris

Buccinator

12

Muscles of mastication

Temporalis

Masseter

Lateral pterygoid

Medial pterygoid

13

Parotid region14

Temporal fossa15

Infratemporal Fossa16

Suboccipital region

17

Pterygopalatine Fossa

18

Triangles of the neck19

20

Compartments of the neck21

Lymph nodes in the head & neck22