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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
Hair that is divided into two equal sections and is then either braided or secured close to the scalp and left to hang free. Ponyhawk: 1. A combination of a mohawk with a ponytail in the back. 2. Long hair worn in several ponytails running from front of the head to the back of the head resembling a mohawk.
With progression, complete hair loss in this region is common. The bald patch progressively enlarges and eventually joins the receding frontal hairline. This measurement scale was first introduced by James Hamilton in the 1950s and later revised and updated by O'Tar Norwood in the 1970s. [ 2 ]
Hair growth on the forehead is suppressed in a bilateral pair of periorbital fields. Without a widow's peak, these fields join in the middle of the forehead so as to give a hairline that runs straight across. A widow's peak results when the point of intersection on the forehead of the upper perimeters of these fields is lower than usual.
It is commonly stated that hair grows about 1 cm per month on average; however reality is more complex, since not all hair grows at once. Scalp hair was reported to grow between 0.6 cm and 3.36 cm per month. The growth rate of scalp hair somewhat depends on age (hair tends to grow more slowly with age), sex, and ethnicity. [15]
This page was last edited on 13 October 2019, at 00:49 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Integumentary system: skin, hair, nails; Lymphatic system: structures involved in the transfer of lymph between tissues and the blood stream, the lymph and the nodes and vessels that transport it; Musculoskeletal system: muscles provide movement and a skeleton provides structural support and protection with bones, cartilage, ligaments, tendons.
Scalp (1 C, 8 P) Songs about hair (1 C, 19 P) T. Hair transplantation (7 P) Trichology (6 P) Pages in category "Human hair" The following 70 pages are in this ...