Scalp and General structure

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Presentation transcript:

Scalp and General structure Head Region Scalp and General structure

Skull Consists of neurocranium and facial skeleton Nasion Vertex Supercillary arches (Nasion)

Lambda

Frankfort (anatomical) Plane Bregma Pterion Asterion Pterion overlies middle meningeal artery; found 2 fingers above zygomatic arch, and a thumb behind postorbital process of zygomatic bone

Skull Development

Mandible

Scalp S –skin C –connective tissue with strong collagen fibers, some fat, the blood supply and nerves for the skin A –aponeurosis of occipitalis and frontalis m. (wounds here gap widely) L –loose CT with large amount of fat, contains emissary veins that may drain into meningeal veins (danger area of scalp) P –pericranium (periosteum of cranium)

Scalp and Face Muscles

Facial Muscles (deep) Corrugator Procerus (thinned) Levator labii superior Nasalis Zygomaticus Orbicularis oris Masseter Mentalis Depressor anguli oris

CN VII -motor supply to scalp and facial muscles and 2 salivary glands; sensory in otic region and ant. 2/3 of tongue taste buds

CN V -the sensory nerve of the face and motor nerve to muscles of mastication (V1 & V2 are sensory only, V3 is mixed)

Arterial Supply

Venous Drainage

Lymph Drainage