Dermatology.

Slides:



Advertisements
Similar presentations
The Integumentary System. Integumentary System Hair Skin Nails.
Advertisements

Structure and Functions of the Skin
The Integumentary System. The Skin The largest organ in the body – Covers the entire body Function: acts a a barrier against infection and injury, helps.
Integumentary System The Skin. 3 Main Layers of Tissue 1.Epidermis – outermost layer of the skin Made up of 5 smaller layers No blood vessels or nerve.
Chapter 4 Skin and Body Membranes Anatomy
Anatomy & Physiology Integumentary System. Largest system in the body Largest organ in the body System includes skin, glands, blood vessels, nerves, hair,
Dermatology Unit -7. Dermatology The medical specialty that studies the anatomy and physiology of the integumentary system and uses diagnostic tests,
Dermatology Unit -7. Dermatology The medical specialty that studies the anatomy and physiology of the integumentary system and uses diagnostic tests,
Integumentary System Chapter 5
October 30, 2014 Journal: What makes up the Integumentary system?
The Integumentary System
Syrian Private University Medical Faculty Medical Terminology M.A.Kubtan, MD – FRCS Lecture 3 M.A.Kubtan.
THE INTEGUMENTARY SYSTEM Objectives: Identify and describe the functions and structures of the integumentary system Identify the medical specialists associated.
Integumentary System Review
The Integumentary System 1. Protection Excretion Temperature maintenance Insulation and cushion Vitamin D3 synthesis Sensory detection Integumentary system.
Integumentary system The skin and accessory organs (Hair, membranes, glands, etc)
The Integumentary System Skin = Integument = Cutaneous Membrane.
Integumentary System Skin (cutaneous membrane) Skin derivatives
Human Anatomy The Integument System. Function(s) 1. Physical protection 2. Temperature Regulation 3. Protects against water loss 4. Excretion 5. Synthesis.
Integumentary System Chapter
Integumentary System Turn to your neighbor…what is the integumentary system?
End Show Slide 1 of 23 Copyright Pearson Prentice Hall Introduction to the Human Body.
CHAPTER 5 INTEGUMENTARY SYSTEM
Integumentary System 4/29/2013. Integumentary System  Skin-Epidermis, Dermis, Hypodermis  Nails-Nail Roots, Keratin in Nails  Hair-Hair Follicles,
The Integumentary System
The Integumentary System Includes the membranous covering, sweat and oil glands, hair and nails 3.2 “integumentary” comes from the Latin word that means.
Integumentary System KAYLEE AND JAZZY. Key Terms  Apocrine Sweat Glands: Glands that open into hair follicles  Arrector Pili: a bundle of smooth muscle.
STARTER #3 1.Label the cavities to the right a. b. c. d. 2.What type of tissue lines organs and cavities? 3. What type of tissue is this?
Integumentary System “The PROTECTOR!!!”. Functions of the Integumentary System:  Protects internal organs/systems  Protects against infectious organisms.
Skin and the Integumentary System Chapter Six. Membranes 1.) Serous Membrane – line the body cavities that lack openings to the outside. Ex. Thorax and.
Skin = Integument = Cutaneous Membrane 7 Functions: 1. Protective covering 2. Regulates body temperature 3. Manufactures Vitamin D 4. Sensory function.
Copyright Pearson Prentice Hall
Integumentary System Membranes 1.Serous 2.Mucous 3.Synovial 4.Cutaneous.
Four Types of Membranes 1. Serous membranes - line body cavities that do not open to the outside - layer of simple squamous epithelium and layer of loose.
Muscular System. Hair Pore Epidermis Dermis Subcutaneous Erector Muscle Hair FollicleSweat Gland Fat Cells Capillary Nerve Ending.
Skin and Body Membranes.  Function of body membranes  Line or cover body surfaces  Protect body surfaces  Lubricate body surfaces.
Integumentary System Skin, Nails, Hair, Glands What organs make up the integumentary system? -skin, and accessories (nails, hair, glands) -integument.
Integumentary System Ch Functions of the Skin: 1. Prevent water loss. 2. Protects from injury & infection. 3. Helps to regulate body temperature.
Chapter 6 Integumentary System.
THE INTEGUMENTARY SYSTEM C14L3 HUMAN SKIN. Integumentary System skin hair nails.
Copyright ©2011 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Language, Second Edition Susan Turley CHAPTER.
THE INTEGUMENTARY SYSTEM THE SKIN, HAIR, AND NAILS.
Unit 3: Integumentary System A&P Chapter 5
The Integumentary System
The Integumentary System
The Skin COS810- FA.
THE INTEGUMENTARY SYSTEM.
36–3 The Integumentary System
HS1 integumentary system
A. Introduction Humans are the most complex organisms on Earth. Our bodies are composed of trillions of _________, the smallest unit of life. These cells.
Unit 3: Integumentary System A&P Chapter 5
Integumentary System: Skin
The Integumentary System
Integumentary System Function(s):
Integumentary System (Ch. 6)
Integumentary System (Ch. 6)
The Integumentary System
Integumentary System.
The Skin in Health and Disease
Copyright Pearson Prentice Hall
Control of Muscle Contraction
Do Now: Name the largest organ in your body
The Integumentary System Lesson 1: Integumentary System
SKIN is IN! Objective: To learn the structure and function of the Integumentary System Bell Work: On the surface of your fingers are unique little ridges,
INTEGUMENTARY SYSTEM THE STRUCTURES.
Integumentary a GLANCE
The Integumentary System Lesson 1: Integumentary System
Lesson 1: Integumentary System
Presentation transcript:

Dermatology

Dermatology The medical specialty that studies the anatomy and physiology of the integumentary system and uses diagnostic tests, medical and surgical procedures, and drugs to treat integumentary diseases. 2

Anatomy and Physiology The integumentary system consists of the skin (epidermis and dermis), sebaceous glands, hair, and nails. Protects the body and is the first line of defense against invading microorganisms 3

Anatomy of the Integumentary System Skin consists of two different layers: The epidermis is categorized as epithelial tissue and covers the external surface of the body. The epidermis also includes the mucous membranes that line the walls of internal cavities that connect to the outside of the body. The dermis is categorized as connective tissue. 4

Anatomy of the Integumentary System (con't) Epidermis This is the thin, outermost layer of the skin. It contains cells that have no nuclei and are filled with keratin, a hard, fibrous protein. These cells form a protective layer, but they are dead cells, so they are constantly being shed or sloughed off in the process known as exfoliation. 5

Anatomy of the Integumentary System (con't) Epidermis (con't) The deepest part (basal layer) of the epidermis is composed of living cells that are constantly dividing and being forced to the surface (exfoliation). Does not contain any blood vessels; it receives nutrients and oxygen from the blood vessels in the dermis 6

Anatomy of the Integumentary System (con't) Epidermis Contains melanocytes, pigment cells that produce melanin, a dark brown or black pigment that absorbs ultraviolet light from the sun to protect the DNA in skin cells from undergoing genetic mutations 7

Figure 7-2 Epidermis and dermis 8

Anatomy of the Integumentary System (con't) Dermis A thicker layer beneath the epidermis Contains collagen fibers (firm, white protein) and elastin fibers (elastic, yellow protein) Contains arteries, veins, and neurons (nerve cells), as well as hair follicles, sebaceous glands, and sweat glands A dermatome is a specific area on the skin that sends sensory information to the spinal cord. 9

Anatomy of the Integumentary System (con't) Sebaceous and Sweat Glands Sebaceous glands are a type of exocrine gland in the dermis that secrete sebum through a duct into a hair follicle. Also known as oil glands. Sweat glands are also exocrine glands. Sweat contains water, sodium, and small amounts of body waste (urea, ammonia, creatinine). 10

Anatomy of the Integumentary System (con't) Sebaceous and Sweat Glands (con't) Sweat glands help to regulate the body temperature. The process of sweating and the sweat itself are both known as perspiration. The sweat glands are also known as the sudoriferous glands. 11

Anatomy of the Integumentary System (con't) Hair Covers most of the body Additional facial, axillary, and pubic hairs appear during puberty. Forms in a hair follicle in the dermis 12

Anatomy of the Integumentary System (con't) Hair (con't) Melanocytes give color to the hair. Hair cells are filled with keratin, which makes the hair shaft strong. Usually, the hair lies flat on the surface of the skin, but when the skin is cold, a tiny erector muscle at the base of the hair follicle contracts and causes the hair to stand up (piloerection). 13

Xie Qiuping Hair Length = 18’ 5.54” Tran Van Hay Hair Length = 20’ 3.6”

Anatomy of the Integumentary System (con't) Nails Cover and protect the distal ends of the fingers and toes Each nail consists of a nail plate, nail bed, cuticle, lunula, and nail root. 15

Figure 7-4 Nail 16

Anatomy of the Integumentary System (con't) Subcutaneous Tissue A loose, connective tissue directly beneath the dermis of the skin Composed of adipose tissue or fat that contains lipocytes (fat-storing cells) Provides a layer of insulation to conserve internal body heat 18

Anatomy of the Integumentary System (con't) Subcutaneous Tissue (con't) Can be thin or as thick as several inches Subcutaneous layer also acts as a cushion to protect the bones and internal organs 19

Figure 7-32 Subcutaneous injection 20