Anatomy Chapter 6 Integumentary System
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Created by:
danderson on January 25, 2012
Description:
Hole's Essential's of Human Anatomy and Physiology
Danderson
Wayne County High School Jesup GA
Classes:
Wayne County High School Anatomy
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45 terms
Terms | Definitions |
|---|---|
 Integumentary System | The skin, the largest organ in the body by weight and various accessory structures associated with it (hair, finger nails, sensory receptors and glands. |
| epidermis | The outer layer of skin. Is composed of stratified squamous epithelium. |
| dermis | Inner layer of skin. Is thicker than the epidermis, and it includes connective tissue consisting of collage-nous and elastic fibers, epithelial tissue, smooth muscle tissue, nervous tissue and blood. |
| basement membrane | a layer that anchors the epidermis to the dermis and separates these two skin layers. |
| subcutaneous layer | this layer is beneath the skin but not a true layer of skin. Contains collegan and elastic fibers. |
| stratum basale | Can also be called the germinating layer, is close to the the dermis and nourished by dermal blood vessels. |
| keratinization | older cells harden in this process. |
| stratum corneum | many layers of rough, tightly packed dead cells accumulate in the outermost epidermis. |
| stratum lucidum | is the thinkened skin of the palms and soles. (Calluses) |
| Melanin | a dark pigment that provides skin color. |
| hair follicle | each hair extends from the surface into the dermis and contains the hair root. |
| eumelanin | pigment for black and brown hair |
| pheomelanin | pigment for red and blond hair |
| albinism | lacks melanin completely, an inherited condition |
| arrector pili muscle | smooth muscle cells that attaches to each hair follicle, causes "goose bumps". |
| Sebaceous glands | contain groups of specialized epitheial cells and are usually associated with hair follicles. ex holocrine glands |
| holocrine glands | secrete an oily mixture of fatty material and celular debris called sebum. |
| Sebum | helps keep the hair and skin soft, pliable and waterproof. |
| sweat glands (sudoriferous glands) | exocrine glands that are widespread in the skin. They are lined with sweat-secreting epithelial cells. |
| eccrine glands | the most abundant of sweat glands, controls body temperature. |
| apocrine glands | become active at puberty. Work when a person gets emotionally upset, frightened, in pain or during sexual arousal. |
| inflammation | normal response to injury or stress. |
| acne | disease of the sebaceous glands that produces blackheads and pimples |
| alopecia | partial or complete loss of hair, naturally or from medication |
| athlete's foot | Fungus infection usually in the skin of the toes and soles |
| birthmark | congenital blemish or spot on the skin, visible at birth or soon after |
| Boil | bacterial infection of the skin, produced when bacteria enters a hair follicle |
| carbuncle | INFECTION OF THE SUBCUTANEOUS TISSUE, USUALLY COMPOSED OF A CLUSTER OF BOILS |
| cyst | sac containing fluid |
| dermatitis | Inflammation of the skin. |
| eczema | noninfectious, inflammatory skin disease characterized by redness, blisters, scabs, and itching |
| herpes | inflammatory skin disease caused by herpes virus characterized by small blisters in clusters |
| impetigo | skin infection characterized by vesicles that become pustular and crusted and then rupture |
| keloid | A thick scar resulting from excessive growth of fibrous tissue |
| mole | Fleshy skin tumor (nevus) that is usually pigmented colors range from brown to black. |
| pediculosis | Disease produced by an infestation of lice. |
| pruritus | itching of the skin |
| psoriasis | a chronic skin disease characterized by dry red patches covered with scales |
| pustule | elevation of skin containing pus |
| scabies | a contagious skin infection caused by the itch mite |
| seborrhea | a condition in which overactivity of the sebaceous glands causes the skin to become oily |
| ulcer | open sore |
| urticaria | hives; an eruption of wheals on the skin accompanied by itch |
| vitiligo | Localized loss of skin pigmentation characterized by milk-white patches |
| wart | flesh-colored, raised area caused by a viral infection |
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