Body Structure and Function Chapter 16 Study Guide

The skin and its accessory structures form the - correct answer Integumntary system __________ is the body's largest organ - correct answer Skin The skin is an ______ because it is composed of a variety of tissues - correct answer Organ ________ tissue not only covers the surface of the body but also lines body cavities and forms some glands - correct answer Epithelial ________ provide internal secretions to the external world - correct answer Glands ________ tissues attach skin to underlying muscle - correct answer Connective _________ tissue helps the body react to sensations of heat, cold, pain, touch, vibration, and pressure - correct answer Nervous accessory structures of the integumentary system include: - correct answer Hair, nails, and glands _____________ means "of the skin" - correct answer Cutaneous Primary functions of the integumentary system are: - correct answer protection, thermoregulation, metabolism, sensation, communication, and storage Secreted _____ provides waterproofing and protects the skin from drying and cracking - correct answer Oil ________________ helps eliminate waste products and helps in cooling - correct answer Perspiration Through the skin medication is called - correct answer Transdermal The skins thin, superficial outer layer is called the - correct answer Epidermis Thick layer below the epidermis is called the ____________ which contains the hair, glands, blood vessels, and nerves - correct answer Dermis The _____________ is the single fatty layer that lies directly below the dermis. It is not actually part of the skin. - correct answer Hypodermis A skin specialist is called a ___________ - correct answer Dermatologist The epidermis is composed of ________ epithelium - correct answer Squamous The layers of the epidermis from outside down - correct answer Corneum, granulosum, spinosum, and basale layer The _____________ is relatively waterproof and provides a barrier against light, heat, bacteria, and other foreign substances - correct answer Stratum corneum Process by which cells are rubbed off constantly through washing and friction is called_________ - correct answer Desquamation Functions of the integumentary system include: - correct answer Protection, thermoregulation, metabolism, sensation, communication, and storage __________ cells produces keratin - correct answer Keratinocyte ___________ cells produces the pigment melanin - correct answer Melanocyte __________ cells provide immune response and participated in allergy response - correct answer Langerhan __________ cells promote sensation of touch - correct answer Merkel _________ creates a waterproof barrier and is the body's true protector - correct answer Keratin Mitosis occurs in the ____________ layer of the skin - correct answer Basal It takes between ____ and ____ weeks for the outer layer of skin to be replaced - correct answer 2 and 6 ________ gives color to hair, skin, and other structures - correct answer Melanin The epidermis is _______, or has no blood supply - correct answer Avascular The epidermis receives nutrients and oxygen from the underlying dermis via tiny fingerlike projections called ___________ - correct answer Rete pegs Sometimes external friction causes a separation between the dermis and the epidermis, leading to a __________ - correct answer Blister Thickened epidermis on areas of the body with greater friction is called a _________ - correct answer Callus _________ occurs due to the loss of elastic fibers and collagen in the skin. - correct answer Wrinkles ______ skin wrinkles less - correct answer Oilier _____________________ causes faster destruction of elastic fibers and can lead to wrinkle development at a younger age - correct answer Cigarette smoking The ________, or "true skin" is considered the thickest skin layer and is composed entirely of live cells - correct answer Corium _________________glands are considered sweat glands - correct answer Sudoriferous _________________ glands are considered oil glands - correct answer Sebaceous ________ is a tough, resistant, and flexible fibrous protein - correct answer Collagen In youth, collagen is __________ and _________ - correct answer Loose and elastic