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Scalp
01
the skin under one's hair, covering the head
What is "scalp"?
The scalp is the area of skin on the top of the head that covers the skull. It is richly populated with hair follicles and serves as the anchor for the hair strands. The scalp provides protection to the underlying structures of the skull and serves as a barrier against external elements. It contains blood vessels, nerves, and sebaceous glands that contribute to the health and maintenance of the hair. The scalp is also a site of sensory perception, allowing us to feel sensations like touch, pressure, and temperature.
Example
Alopecia areata causes sudden hair loss in patches, often on the scalp.
Electroencephalography monitors brain activity through electrodes on the scalp.
Psoriasis patches often appear on the elbows, knees, and scalp.
As part of the experiment, the scientist disconnected the electrodes from the subject's scalp after recording brain activity.
The hairdresser recommended a gentle hair dye for those with sensitive scalps.
