Skin on the Head

Skin on the head crossword clue. A quick crossword down question in Sydney Daily Telegraph on Monday, 5 June 2017. 5 letters.

Answer: SCALP

The scalp is usually described as having five layers, which can conveniently be remembered as a mnemonic:

S: The skin on the head from which head hair grows. It contains numerous sebaeceous glands and hair follicles.
C: Connective tissue. A dense subcutaneous layer of fat and fibrous tissue that lies beneath the skin, containing the nerves and vessels of the scalp.
A: The aponeurosis called epicranial aponeurosis (or galea aponeurotica) is the next layer. It is a tough layer of dense fibrous tissue which runs from the frontalis muscle anteriorly to the occipitalis posteriorly.
L: The loose areolar connective tissue layer provides an easy plane of separation between the upper three layers and the pericranium. In scalping the scalp is torn off through this layer.
P: The pericranium is the periosteum of the skull bones and provides nutrition to the bone and the capacity for repair. It may be lifted from the bone to allow removal of bone windows (craniotomy).

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