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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 include hair, sweat glands, sebaceous glands, and sensory nerves. The skin is made up of three microscopic layers: epidermis, dermis, and hypodermis. The epidermis is composed of stratified squamous epithelium and is divided into the following five sublayers or strata, listed in order from outer to inner: Stratum corneum, Stratum lucidum,
The hair follicle is an organ found in mammalian skin. [1] It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions.. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells
The head receives blood supply through the internal and external carotid arteries. These supply the area outside of the skull (external carotid artery) and inside of the skull (internal carotid artery). The area inside the skull also receives blood supply from the vertebral arteries, which travel up through the cervical vertebrae.
Anyone with thin hair knows the struggle. You wish your hair would hold its shape for longer than 0.001 seconds. Hell, you just want your scalp to stop showing through your baby-fine strands. (I ...
Muscular branches: supply the digastric, stylohyoid, splenius, and longus capitis muscles. Sternocleidomastoid branch : This branch divides into upper and lower branches in the carotid triangle . The upper branch accompanies the accessory nerve to the sternocleidomastoid , and the lower branch arises near the origin of the occipital artery ...
This provides sensation for the skin of the forehead, and for the front edge of the scalp. The other part, the deep division, runs into the occipitofrontalis muscle and provides frontoparietal sensation. [1] Blood supply to the forehead is via the left and right superorbital, supertrochealar, and anterior branches of the superficial temporal ...
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 ]