horny layer—flat dead keratonized skin cells that form a protective layer on the surface of the skin.
clear layer—found only on area of the body where no hair follicles are, such as palms and soles.
granual layer where cells are filled with keratohyalin, which helps form keratin. Eleiden is present
prickle cell layer—cells appear to have little spines on the outside of the membrane.
a tough fibrous protein that is part of the other layer of the skin's epidermis, hair, and fingernails.
True skin--below the epidermis. Composed mostly of elastin and collagen. Connective tissue foundation of the skin. Many nerve endings, hair follicles, glands are here.
the upper sublayer of the dermis. Composed of cone like projections responsible for ID markings...finger prints.
large long chain molecular proteins that lie on the top of the skin and bind water. Also helps to prevent water loss
is intertwine throughout the reticular layer of dermis and give skin firmness and elasticity
common smaller coiled sweat glands found all over the body. Have their own orifice, duct and fundus. Excrete water and salt like substance. Regulates body temperature
larger coiled sweat glands located in groin and armpits. Produce thicker form of sweat responsible for producing the substance that when in contact with bacteria produces odor
Arrector Pili Muscle
involuntary muscle attached to the hair follicle at an obtuse angle. Reacts to sensation of cold and fright.
deep seated course hairs which grow from the scalp, underarms, pubic region and other parts
a separate organ that supplies blood and other element essential for hair growth. Cells make up the Medulla of the hair
lower part of the hair bulb where cells begin Mitotic activity. Cells make up the Cortex of the hair
Connective Tissue "sheath"
a continuation of the dermis that surrounds the follicle and sebaceous glands and provides nerve endings and blood supply
Inner Root Sheath
Made up of Cuticle, Huxley, and Henle's Layer. Surrounds the hair as far up as the sebaceous gland ducts
Cuticle Layer of the IRS
Innermost layer of the Inner Root Sheath that Interlocks with the cuticle of the hair
Cuticle of the Hair
Outermost layer of the hair that interlocks with the IRS anchoring the hair in the follicle.
Medulla of the hair
innermost center layer of the hair, Dermal Papillae is responsible for this layer