Random A and P Flashcards
Eccrine Glands
Eccrine sweat glands occur over most of the body and open directly onto the skin’s surface.
Apocrine Glands
open into the hair follicle, leading to the surface of the skin. Apocrine glands develop in areas with many hair follicles, such as on the scalp, armpits and groin
sebaceous glands
Accessory structures originating in the dermis that secrete sebum onto hair emerging from the hair follicle
ceruminous gland
Accessory structures that produce ear wax. They are found only in the dermis of the ear canal
where are hair follicles located
Tubes arising from the dermis surrounded by invaginations of epithelial tissue, from which hair growth occurs
what is located in the epidermis
The epidermis is made up of dead cells on the outside, and it has an inner layer of living cells. The epidermis also includes cells known as “melanocytes.”
melanocytes
Melanocytes produce and distribute melanin, which is a skin pigment.
what is located in the dermis
The dermis contains collagen, blood vessels, glands, hair follicles, and nerve endings.
where are nerve endings located
dermis
where are blood vessels
dermis
when the body is cold then vessels
constrict - cutaneous vasoconstriction so less blood is carried to the surface
Sudoiferous
When body temperature rises during physical activity, increased ambient temperature, or fever, these glands respond by secreting sweat. This sweat is eventually evaporated from the surface of the skin, effectively cooling down body temperature.
- usually larger than eccrine
how does the skin produced Vitamin D
The skin produces vitamin D by absorbing ultraviolet radiation, but melanocytes are not responsible for its production.
Nerve ending function
sensing the environment
