Search results
Results from the WOW.Com Content Network
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. [ 1 ] This complex interaction induces the hair ...
A sebaceous gland or oil gland[ 1] is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. [ 2] In humans, sebaceous glands occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of ...
An apocrine sweat gland ( / ˈæpəkrən, - ˌkraɪn, - ˌkriːn /; from Greek apo 'away' and krinein 'to separate') [ 5][ 6] is composed of a coiled secretory portion located at the junction of the dermis and subcutaneous fat, from which a straight portion inserts and secretes into the infundibular portion of the hair follicle. [ 7]
Inner root sheath. The inner root sheath or internal root sheath of the hair follicle is located between the outer root sheath and the hair shaft. [ 1] It is made of three layers: Henle's layer, Huxley's layer, and the cuticle. [ 2]
Sweat glands, also known as sudoriferous or sudoriparous glands, from Latin sudor 'sweat', [ 6][ 7] are small tubular structures of the skin that produce sweat. Sweat glands are a type of exocrine gland, which are glands that produce and secrete substances onto an epithelial surface by way of a duct. There are two main types of sweat glands ...
Anatomical terms of neuroanatomy. [ edit on Wikidata] How sounds make their way from the source to your brain. Hair cells are the sensory receptors of both the auditory system and the vestibular system in the ears of all vertebrates, and in the lateral line organ of fishes. Through mechanotransduction, hair cells detect movement in their ...
A trichilemmal cyst (or pilar cyst) is a common cyst that forms from a hair follicle, most often on the scalp, and is smooth, mobile, and filled with keratin, a protein component found in hair, nails, skin, and horns. Trichilemmal cysts are clinically and histologically distinct from trichilemmal horns, hard tissue that is much rarer and not ...
The inner root sheath (IRS) consists of: a delicate cuticle next the hair, composed of a single layer of imbricated scales with atrophied nuclei; Huxley's layer. Henle's layer. The term "trichilemmal" refers to the outer root sheath. [2] The IRS functions to mould, adhere, as well as participate in the keratinization of growing hair.