Mindblown: a blog about philosophy.

Covered with pimples.  

One hair. Hair-like process on the surface of a bacterium.  

A small version of a project which is carried out first, in order to discover how well it works and to solve any problems, before going ahead with the full version.  

A condition in which someone has an unusual amount of hair or where hair is present in an unusual place.  

Referring to the hair follicles and the glands attached to them. To a hair follicle and its sebaceous gland.  

A small depression with hairs at the base of the spine. A hairy bump in the cleft of the buttocks in tissue near the tailbone; also known as a pilonidal cyst. A pilonidal sinus can become infected and form a painful abscess (pus-filled sac). Treatment is with antibiotics and, as necessary, either surgical incision and…

A cyst containing hair, usually found at the bottom of the spine near the buttocks. Hair that has been encapsulated in a dermal cyst. A cyst most often in the sacrococcygeal region, usually at the upper end of the intergluteal cleft. It is due to a developmental defect that permits epithelial tissue to be trapped…

Relating to a cyst or cavity which has a growth of hair. Containing hairs; most often seen in a dermoid cyst, especially in the saccrococcygeal region. Containing hair. This term typically refers to cysts, believed to develop when surface skin becomes embedded deep in the tissues due to a congenital mistake. Within these cysts, the…

A reaction of the dermal papillae of the skin to cold and fear which causes the hairs on the skin to become erect. Erection of the hairs of skin in response to emotional stress, skin irritation, or cold; also called goose bumps; gooseflesh. Piloerection when skin is cooled or as a result of emotional reaction.…

A nerve which supplies the arrector pili muscles attached to hair follicles. Sympathetic nerves that supply muscle fibers in the skin, around the roots of hairs. Activity of the sympathetic nervous system cause the muscles to contract, raising the hairs and giving the ‘gooseflesh’ effect of fear or cold. A motor nerve that innervates the…