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Terms in this set (24)
Projects above the skin's surface.
Thick, keratinized stratified squamous epithelium; avascular; most cells are keratinocytes.
Composed of dense irregular connective tissue; vascularized; supplied with receptors; cells- fibroblasts- make fibers and macrophages (- eats bacteria).
hypodermis (subcutaneous layer)
Composed of adipose tissue; functions as a site for storage, shock absorber, insulates deep tissue, and anchors skin to underlying tissues.
Smooth muscle; pulls hair upright when cold or frightened.
Eccrine sweat gland
Abundant of palms, soles of feet, and forehead; regulates body temp. through pores @ skin surface; produce clear sweat.
apocrine sweat gland
Found mainly in armpit and genital area; ducts empty into hair follicle; function at puberty; release sweat that contains fatty acids and proteins.
root hair plexus
Nerve endings that wrap around the hair bulb that sense shaft movement.
cutaneous vascular plexus
sensory nerve fiber
Produces sebum (lubricant for skin, prevents brittle hair, kills bacteria); activated at puberty; cause of acne; ducts empty into hair follicles (but some empty into skins surface).
Embedded in the skin
Extends from epidermis to dermis; ending of the hair root.
Contains projections called dermal papillae; upper dermal region.
Protective layer; outermost 20-30 dead keratinocytes of epidermis; rubs off as dandruff.
reticular layer (of dermis)
Contains blood vessels, sweat and oil glands, and deep pressure receptors; lower dermal region.
3-5 layers of keratinocytes containing granules of keratin.
Layers of flattened irregular cells; intermediate filaments made of pre-keratin.
Cells undergo rapid mitosis; Deepest layer of epidermis.
Located in the stratum spinosum; produce keratin- fibrous protein; flake off when they reach the apical surface.
Found between dermal and epidermal layers; associated w/sensory nerve endings as touch receptors.
mostly in stratum basal; produce melanin
activate the immune system when bacteria and viruses are present; located in the stratum spinosum.
Only in thick hairless skin of the palms of the hands and soles of the feet; formed from dead keratinocytes.
Sets found in the same folder
Body regions: Upper limb (arms)
Body regions: Manus (hand)
Abdominal Surface Regions
Body Regions: Pedal (foot)
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