1 Introduction to Head and Neck Anatomy Sanjaya

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1 Introduction to Head and Neck Anatomy Sanjaya Adikari Department of Anatomy

1 Introduction to Head and Neck Anatomy Sanjaya Adikari Department of Anatomy

Boundaries of the head & neck Spinous process of C 7 Acromian 2

Boundaries of the head & neck Spinous process of C 7 Acromian 2

3 Bones Skull vault Skull base Facial skeleton Cervical Vertebrae

3 Bones Skull vault Skull base Facial skeleton Cervical Vertebrae

4 Brain and the spinal cord Spinal cord Foramen magnum

4 Brain and the spinal cord Spinal cord Foramen magnum

5 Nervous sytem Somatic CNS PNS Autonomic CNS PNS

5 Nervous sytem Somatic CNS PNS Autonomic CNS PNS

6 Main divisions of the brain 1 1 2 3 4 = forebrain (cerebrum)

6 Main divisions of the brain 1 1 2 3 4 = forebrain (cerebrum) + 2 6 = midbrain 3 5 4 6 = hindbrain 5 midbrain 3 pons 4 medulla 5 = brainstem

Cranial nerves 7

Cranial nerves 7

Studying cranial nerves Should know 1. Position of nucleus 2. Course within brain stem

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

9

Spinal Nerves 10

Spinal Nerves 10

11 Eye Tongue Ear Body Nose Mind Afferent (sensory) Somatic Visceral Efferent (motor) Voluntary

11 Eye Tongue Ear Body Nose Mind Afferent (sensory) Somatic Visceral Efferent (motor) Voluntary Involuntary/Autonomic Contract OR Secrete

Muscles of facial expression 12 Frontalis Orbicularis oculi Levator labii muscles & levator anguli

Muscles of facial expression 12 Frontalis Orbicularis oculi Levator labii muscles & levator anguli oris Zygomaticus minor & major Buccinator Orbicularis oris Depressor anguli oris

Muscles of mastication Temporalis Masseter Lateral pterygoid Medial pterygoid 13

Muscles of mastication Temporalis Masseter Lateral pterygoid Medial pterygoid 13

Parotid region 14

Parotid region 14

Temporal fossa 15

Temporal fossa 15

Infratemporal Fossa 16

Infratemporal Fossa 16

Suboccipital region 17

Suboccipital region 17

Pterygopalatine Fossa 18

Pterygopalatine Fossa 18

19 Triangles of the neck

19 Triangles of the neck

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20

Compartments of the neck 21

Compartments of the neck 21

Lymph nodes in the head & neck 22

Lymph nodes in the head & neck 22

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