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integumentary system
dermis to appocrine
| Term | Definition |
|---|---|
| Dermis | Deeper and thicker layer of the skin |
| Dermis | Composed of the Dense irregular connective tissue with a matrix containing collagen and elastic fibers |
| Dermis | Tissue is vascular to nourish the skin and regulate the body |
| Papillary layer | Consists of areolar connective tissue contains fine elastic fibers. |
| dermal papillae | Surface area increased by small fingerlike, projections |
| reticular layer | Meshed in the open spaces of the matrix and hair follicles. nerves , oil glands, ducts of sweat glands, and some adipose tissue. |
| hypodermis | Main role is to connect the skin to the underlying structures like the bone and muscle. |
| hypodermis | Also plays a role in insulation from heat and cold, provides shock absorption and is a reserve energy source. |
| hair | Also contributes to the sense of touch |
| shaft | Projects from the surface of the skin |
| root | Portion of the hair deep to the surface that penetrates into the dermis. Place where mitosis occurs. |
| Bulb | At the base of the hair follicle is an enlarged layered structure |
| hair follicle | surrounding the root composed of live cells receives nutrition from a cluster of blood vessels called the bulb. |
| arrector pili | attaches to each hair follicle at an angle. It contracts in response to cold temperature and stress. It presses against the sebaceous gland forcing oil onto the skin surface. |
| sebaceous glands | Formed of Glandular Epithelial Secrete sebum |
| sebaceous glands | Sebum coats the hair and skin to hold in moisture, keep hair glossy, skin soft and pliable helps in the formation of vitamin D. Sebum production is accelerated by sex hormones. |
| sebaceous glands | Sebum production is accelerated by sex hormones. |
| pore | A tube (duct) carries the sweat product to the surface that exits as a ----- on the surface of the skin. |
| ammonia urea, uric acid lactic acid | Toxic Substances secreted within sweat glands, |
| eccrine | Function throughout life |
| eccrine | Produce sweat which consists of water, salts and a small amount of urea |
| eccrine | Sweat helps maintain body temperature and helps eliminate body wastes. |
| apocrine | Begin functioning during puberty |
| apocrine | Produce sweat that contains proteins which promotes the growth of microorganisms on the skin surface. |
| apocrine | This sweat may produce a strong odor |
| apocrine | Glands are more numerous in the axilla (arm pit), pubic region |
| apocrine | Also triggered during emotional stress or sexual excitement (referred to as cold sweat). |
Created by:
leela saritha
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