front 1 6 functions of the integumentary system. | back 1 protection, body temp regulation, excretion, blood reservoir, metabolic functions and cutaneous function. |
front 2 Protection of the integumentary system | back 2 chemical, physical, and biological barrier. |
front 3 Body temperature regulation of the integumentary system | back 3 Dilation (cooling) and constriction (warming) of dermal vessels; increases sweat glands. |
front 4 Cutaneous sensation of the integumentary system. | back 4 exoreceptors sense touch and pain |
front 5 Metabolic functions of the integumentary system. | back 5 synthesis of vitamin D precursor molecule in dermal blood vessels. |
front 6 Blood reservoir of the integumentary system. | back 6 skin blood vessels store up to 5% of the body's blood volume. |
front 7 Excretion of the integumentary system. | back 7 limited amounts of nitrogenous wastes are eliminated from the body in sweat , along with water and excess salts. |
front 8 Epidermis | back 8 outermost superficial layer; functions in protection. |
front 9 Dermis | back 9 middle region. |
front 10 Hypodermis (superficial fascia) | back 10 deepest region |
front 11 Epidermis is composed of... | back 11 keratinized stratified squamous epithilium, consisting of keratinocytes, melanocytes, Merkel cells, and Langerhans' cells. |
front 12 Dermis is composed of... | back 12 flexible connective tissue, consisting of fibroblasts, macrophages, and occasionally mast and white blood cells. |
front 13 Hypodermis is composed of... | back 13 adipose and areolar connective tissue. |
front 14 Stratum Basale (Basal Layer) | back 14 Is the deepest epidermal layer firmly attached to the dermis, consists of a single row of youngest keratinocytes. Undergoes rapid division, hence alternate name stratum germinativum. |
front 15 Stratum Spinosum (Prickly Layer) | back 15 Consists of melanin granules and Langerhans' cells; cells contain a weblike system of intermediate filaments attached to the desmosomes. (Epidermis) |
front 16 Stratum Granulosum (Granular Layer) | back 16 Consists of keratohyaline and lamellated granules; 3 to 5 thin layers in which drastic changes in kertinocyte appearance occurs. (Epidermis) |
front 17 Stratum Lucidum (Clear Layer) | back 17 Consists of a few rows of flat, dead keratinocytes; thin transparent band superficial to to the stratum granulosum; only present in thick skin. (Epidermis) |
front 18 Stratum Corneum (Horny Layer) | back 18 no data |