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AP - integumentary
Anatomy And Physciology - integumentary
Term | Definition |
---|---|
Integumentary System | System comprising the skin, hair, nails, and associated glands, protecting the body and regulating temperature. |
Epidermis | The outermost layer of skin, providing a waterproof barrier and creating our skin tone. |
Dermis | Beneath the epidermis, containing tough connective tissue, hair follicles, and sweat glands. |
Subcutaneous Layer | The layer of tissue beneath the dermis that anchors the skin to underlying organs with fat and connective tissue. |
Melanin | Pigment produced by melanocytes in the epidermis that gives skin its color. |
Keratin | A protein that protects epithelial cells from damage or stress, prominent in hair and nails. |
Hair Follicles | Structures in the dermis that produce hair by packing old cells together. |
Sebaceous Glands | Oil glands in the skin that secrete sebum to lubricate skin and hair. |
Sweat Glands | Glands that produce sweat, found in the dermis layer of the skin. |
Cerumen | Earwax produced by glands in the ear canal to protect the ear. |
Stratum Corneum | The outermost layer of the epidermis, consisting of dead cells that provide a layer of protection. |
Stratum Basale | The deepest layer of the epidermis responsible for cell division and replacement. |
Sensory Receptors | Nerve endings in the skin that respond to heat, cold, touch, pressure, and pain. |
Hypodermis | Another term for the subcutaneous layer, containing fat and connective tissue. |
Melanocytes | Cells in the epidermis that produce melanin, giving skin its color. |
Collagen | A structural protein found in the skin and other connective tissues. |
Elastin | A protein in connective tissue that allows tissues to resume their shape after stretching or contracting. |
UV Radiation | Ultraviolet radiation from the sun that can damage the skin and lead to skin cancer. |
Vitamin D Synthesis | The process by which the skin uses sunlight to synthesize vitamin D from cholesterol. |
Thermoregulation | The process of maintaining an internal temperature within certain boundaries, even when the external temperature varies. |
Excretion | The process by which waste products are eliminated from the body through sweat. |
Dermatology | The branch of medicine dealing with the skin, nails, hair, and their diseases. |
Cutaneous Sensation | Sensory perception through the skin, including touch, pressure, heat, cold, and pain. |
Hair Shaft | The part of the hair that extends above the skin's surface. |
Nail Bed | The skin beneath the nail plate that provides nutrients to support nail growth. |
Free Nerve Endings | Nerve endings in the skin that detect sensations like temperature and pain without intermediary structures. |
Meissner's Corpuscles | Specialized nerve endings in the skin that detect light touch and texture. |
Pacinian Corpuscles | Nerve endings in the skin and other organs that respond to pressure and vibration. |
Basal Cell Carcinoma | A type of skin cancer that begins in the basal cells of the skin, typically due to UV exposure. |
Squamous Cell Carcinoma | A form of skin cancer arising from the squamous cells in the epidermis. |