Knowra Scalp Scalp The scalp is the skin and underlying tissues covering the human skull, typically bearing hair. Its layered structure supports hair growth and supplies blood to the tissues over the skull.
Layers of the scalp : The scalp’s five layers are skin, dense connective tissue, galea aponeurotica, loose areolar tissue, and pericranium. This layered anatomy is the foundation for understanding scalp mobility and injury.
Scalp blood supply : The arterial and venous network that supplies and drains the tissues of the scalp. Abundant vessels in its connective tissue make scalp wounds bleed heavily.
Hair transplantation : A surgical procedure that relocates hair follicles from a donor area to areas of hair loss. It relies on scalp donor zones and the survival of transplanted follicles.
Face : The front of the human head, containing the eyes, nose, mouth, and other structures of expression and sensation. The face meets the scalp at the hairline but has distinct skin and underlying anatomy.
Galea aponeurotica : A broad tendon sheet connecting the frontal and occipital muscles across the top of the skull. It forms the scalp’s strong middle layer and transmits muscle pull across the head.
Superficial temporal artery : A terminal branch of the external carotid artery that supplies the lateral scalp. It is a major source of blood to the scalp, especially above the temple.
Androgenetic alopecia : A patterned form of hair loss driven by genetic susceptibility and androgen effects on follicles. It alters scalp hair distribution while usually sparing characteristic donor regions.
Forehead : The region of the face above the eyes and below the hairline. It borders the scalp anteriorly, while its skin is generally less mobile over underlying tissue.
Pericranium : The connective-tissue membrane covering the outer surface of the skull bones. It is the deepest scalp layer and anchors the covering tissues to the skull.
Scalp innervation : The sensory and motor nerve supply of the scalp and its associated muscles. Its sensory branches account for scalp sensation and guide regional anesthesia.
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