Integumentary System Function: The integumentary system serves the body by protecting it, as well as maintaining body temperature, excretion, and the perception of stimuli. Key terms: Derm/o, Dermat/o: Skin Kerat/o: Hard, horn-shaped tissue Xer/o: Dry Xanth/o: Yellow Erythr/o: Red Pedicu/o: Fingernail/Toenail Onych/o: Nail Myc/o: Fungus Pil/o: Hair; Hair Follicle Lip/o: Fat Rhytid/o: Wrinkle Albin/o: White EXTRA KEY TERMS Hidr/o: Sweat Scler/o: Hardening Trich/o: H air Adip/o: F at Cauter/o: Heat; burn Vocabulary: Epidermis: Outermost layer of the skin Keratin: A fibrous water-repellent protein which is what the epidermis consists of. Melanocytes: Cells that contain and produce dark brown to black pigments (melanin). Basal layer: The deepest layer of the epidermis. Hair follicles: Tiny secretory cavities from which hair grows. Collagen: A fibrous protein found in s kin, bone, cartilage, tendons, and ligaments. Sebum: An oily substance that is secreted into hair follicles which lubricates skin and hair. Sweat glands: Tiny coiled glands located in the dermis. Perspiration: A liquid that consists of 99% water and 1% salt and metabolic waste products which is secreted by sweat glands. Arrector pili: Bundles of small muscle fibers that are attached to hair follicles.
EXTRA Vocabulary: Nail plate: The hard translucent part of the nail. Cuticle: Narrow band of epidermal tissue attached to the surface of the nail. Nail root: Area of the dermis on which the nail rests. Lipids: A group of organic compounds that consist of fat, and are insoluble. Epithelial tissue: Is a layer(s) of the epidermis that covers the surface of the body and lines internal organs and cavities. Diseases/disorders: Alopecia: Hair loss that occurs due to genetics, normal aging, illness, or drugs for certain diseases. Gangrene: The death of tissue due to loss of blood supply and is followed by bacterial infection. Psoriasis: Chronic disease marked by itchy erythematous skin with silver patches. Scabies: A contagious, parasitic infection of the skin with itching. EXTRA Diseases/disorders: Keloid: An abnormally raised, thickened scar. Tinea: Skin infection caused by fungus. Lesions, noncancerous: An area of benign tissue. Cicatrix: A scar left by a healed wound. Urticaria: Hives with localized swelling and itching. Test/Procedure: Excisional biopsy: Surgical removal of an entire lesion or tumor. Incisional biopsy: Incision into the tissue for removal of a small piece of living tissue for microscopic examination. Healthcare careers: Dermatologist: A physician who diagnoses and treats conditions and diseases of the skin, hair, and nails. Dermatology Technician: A specialized medical assistant who works in the skin-care field, and some of their duties are to record patients’ medical histories, preparing patients for examinations, clinical procedures, etc.
EXTRA Healthcare careers: Pediatric Dermatologist: A dermatologist that specializes in skin disorders in infants and children. Dermatologic Oncologist: A dermatologist who treats, diagnoses, and surgically removes various types of skin cancers. Cosmetic Dermatologist: A dermatologist that specializes in skin treatments and conditions to maintain, improve, or restore appearance. Immunodermatologist: A dermatologist that specializes in the treatment of skin cancers caused by an overactive immune system. Dermatology Nurse Practitioner: Dermatology nurse practitioners are nurse practitioners specialized in dermatology and certain duties include prescribing certain medications, ordering lab work, diagnosing and treating minor illnesses, etc. Citations: Introduction to Medical Terminology, 1st Edition Page 87, www.g-wonlinetextbooks.com/introduction-medical-terminology-2017/98. “Medical Professions.” Integumentary System - Home, thehumanskinsystem.weebly.com/medical-professions.html. Image Citations: Ebneshahidi, Dr. Ali. T he Integumentary System, http://www.lamission.edu/lifesciences/AliAnat1/Chap%203%20-%20Integumentary%20System. pdf “The Epidermis.” SCIENTIST CINDY, w ww.scientistcindy.com/the-epidermis.html.
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