Introduction to Integumentary System-Questions and Answers Graded A+

Introduction to Integumentary System-Questions and Answers Graded A+ What makes up the integumentary system? - ANSWER-skin, hair, nails, glands and nerves. functions of integumentary system - ANSWER-first line of defense, sensation, temperature regulation, vitamin D production(initiated by sunlight hitting the skin), excretion (chief product is perspiration, which is fluid that contains many solutes within it the body is trying to get rid of) and immunity Epidermis (basic definition) - ANSWER-superficial layer of ET Dermis (basic definition) - ANSWER-provides structural strength, comprised of connective tissue subcutaneous tissue (hypodermis) - ANSWER-not part of the skin, comprised of loose CT that connects skin to underlying structures functions of integumentary system - ANSWER--protect from environment's effects -contain body structures and substances (prevent dehydration) -heat regulation -sensation -synthesize/store vitamin D epidermis - ANSWER-Keratinized epithelium -has superficial layer that protects basal layer -avascular dermis - ANSWER-Next layer, nourishes the epidermis -has cutaneous plexus -collagen and elastic fibers hair follicles - ANSWER-Have arrector pili muscles and sebaceous (sweat glands) what does the integumentary system also include? - ANSWER--nails -mammary glands -teeth enamel subcutaneous tissue -function - ANSWER-Also know as superficial fascia. Under the dermis. Loose connective tissue and stored fat. -has sweat glands, blood and lymphatic vessels, nerves -function: insulation, padding skin ligaments - ANSWER-Attach dermis to the deep fascia. -determine mobility of skin over deep structures what determines the color of the skin? - ANSWER-Result of blood flow through superficial capillary beds of the dermis stretch marks - ANSWER-Due to rapid size increases --> stretches skin and damages collagen fibers