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The scalp is the area of the head where head hair grows. [1] It is made up of skin, layers of connective and fibrous tissues, and the membrane of the skull. Anatomically, the scalp is part of the epicranium, a collection of structures covering the cranium. The scalp is bordered by the face at the front, and by the neck at the sides
These nerve groups transmit afferent (sensory) information from the scalp, neck, and shoulders to the brain. The motor branches of spinal nerves include: ansa cervicalis, dividing into a superior root, C-1, and an inferior root, C-2 and C-3, and the phrenic nerve, C-3 to C-5, the segmental nerve branches, C-1 to C-5.
Anatomy of the human head. The human head consists of a fleshy outer portion, which surrounds the bony skull.The brain is enclosed within the skull. There are 22 bones in the human head.
Human anatomy (gr. ἀνατομία, "dissection", from ἀνά, "up", and τέμνειν, "cut") is primarily the scientific study of the morphology of the human body. [1]
It then changes its course and runs vertically upward, pierces the fascia connecting the cranial attachment of the trapezius with the sternocleidomastoideus, and ascends in a tortuous course in the superficial fascia of the scalp, where it divides into numerous branches, which reach as high as the vertex of the skull and anastomose with the ...
The scalp has three distinct layers including the cutaneous layer, a subcutaneous connective tissue layer, and a muscular layer. [1] The crown covers bone layers of the skull. It is between 4 and 7 millimetres (0.16 and 0.28 in) thick, and varies between different people. [ 2 ]
The epicranial aponeurosis is a tough layer of dense fibrous tissue that covers the upper part of the skull.. The epicranial muscle (also called the epicranius) has two sections: the occipital belly, near the occipital bone, and the frontal belly, near the frontal bone.
It is closely connected to the integument by the firm, dense, fibro-fatty layer which forms the superficial fascia of the scalp. It is attached to the pericranium by loose cellular tissue, which allows the aponeurosis, carrying with it the integument, to move through a considerable distance.