Preview

Skin and the Integumentary System

Powerful Essays
Open Document
Open Document
2692 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Skin and the Integumentary System
SKIN AND THE INTEGUMENTARY SYSTEM

CHAPTER 6

Your Name ()

OVERVIEW
This chapter describes the skin and its appendages. It explains the structure and function of the layers of skin (dermis and epidermis) and the hair, nails, and sweat glands. This chapter also explains how the skin helps regulate body temperature and how it responds to environmental factors, such as sunlight and injury. Study of the integumentary system is essential to understanding how the body controls interaction between the internal and external environments.

CHAPTER OBJECTIVES
After you have studied this chapter, you should be able to:
1. Define organ, and name the large organ of the integumentary system.
2. List the general functions of the skin.
3. Describe the structure of the various layers of the skin.
4. Summarize the factors that determine skin color.
5. Describe the accessory organs associated with the skin.
6. Explain the functions of each accessory organ.
7. Explain how the skin functions in regulating body temperature.
8. Describe wound healing.
9.Distinguish amoun the types of burns, including a description of healing with each type.
10. Summarize the life-span changes in the integumentary system.

FOCUS QUESTION
You have spent the day on the beach in 90(heat. You return to your air-conditioned home and notice that you have several insect bites that you have scratched open. How does the skin help you to adjust to the changes in temperature and prevent a systemic infection?

STUDY ACTIVITIES
I. AIDS TO UNDERSTANDING WORDS Define the following word parts.

alb-(white) cut-(skin) derm-(skin) epi-(upon, after, in addition) follic-(small bag) hol-(entire, whole) kerat-(horn) melan-(black) por-(passage, channel) seb-(grease) We are now ready to move to the next higher level of organization. We’ve looked at atoms, molecules, and the macromolecules of life. The interactions of the different types of biomolecules make a living cell

You May Also Find These Documents Helpful

  • Powerful Essays

    The skin is the largest organ of the body and it acts as a waterproof protector for all the internal organs and it consist of four distinct layers: The epidermis, the basement membrane zone, the dermis and the subcutaneous layer. The epidermis which is the outer layer and is a protective multi-layered self-renewing structure which varies in thickness depending on which part of the body it covers. The dermis is underneath the epidermis, this is a layer of connective tissue which provides the skins elasticity and strength it also contains sensory nerve endings, blood and lymph vessels, sebaceous and sweat glands. Under this layer is the subcutaneous fat layer; this separates the skin from the underlying bone and muscle with rich blood supply it also serves as an insulator and energy store. Pressure ulcers develop when a large amount of pressure is applied to an area of skin over a short period of time. Or, they can occur when less force is applied but over a period of time. The extra pressure disrupts the flow of blood through the skin. Without a blood supply the affected area of the skin becomes starved of oxygen and nutrients. It begins to breakdown, leading to the formation of ulcers.…

    • 1827 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Describe the anatomy and physiology of the skin in relation to skin breakdown and the development of pressure sores?…

    • 1371 Words
    • 6 Pages
    Good Essays
  • Good Essays

    1.1 Describe the anatomy and physiology of the skin in relation to skin breakdown and the development of pressure sores…

    • 2109 Words
    • 9 Pages
    Good Essays
  • Good Essays

    Stratified squamous epithelium in the epidermis, areolar connective tissue, and some dense irregular connective tissue in the dermis have been afllicted…

    • 640 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The skin is an outside covering for the human body. It is an organ just like the heart, lung and liver. It provides layer of protection and plays a vital role in maintaining body temperature and by making you aware of external stimuli through the sense of touch. The skin has two layers, the epidermis and the dermis, although not part of the skin, the hypodermis lies beneath the dermis. When the skin is about to be damaged it shows signs of redness and warmth on the area. Skin gives protection against biological invasion, physical damage and ultra violet radiation. It also provides us sensation for touch, heat and pain. Thermoregulation is supported through sweating and regulation of blood flow through the skin and synthesis of Vitamin D occurs. As the body gets older, poor nutrition or disability occurs, the skin is under pressure of getting damage through pressure sores. Factors such as shearing, friction and compression are the major cause of a patient to have developed a pressure sore. A grading system has been developed in order to assess the damage of the skin. There are four recognised grades of pressure ulcers in the EPUAP Wound Classification system.…

    • 586 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    10. In a hair, the outermost single layer of cells that overlap one another like shingles is called…

    • 1160 Words
    • 4 Pages
    Powerful Essays
  • Good Essays

    Tissue Viability

    • 1415 Words
    • 5 Pages

    Skin is the largest organ of the body, covering and protecting the entire surface of the body. The total surface area of skin is around 3000 sq inches or roughly around 19,355 sq cm depending on age, height, and body size. The skin, along with its derivatives, nails, hair, sweat glands, and sebaceous glands forms the integumentary system. Besides providing protection to the body the skin has a host of other functions to be performed like regulating body temperature, immune protection, sensations of touch, heat, cold, and pain through the sensory nerve endings, communicating with external openings of numerous other body systems like digestive system, urogenital system, and respiratory system via mucous membranes.The skin is primarily composed of three layers. The skin, which appears to be so thin, is still itself divided into epidermis, dermis, and subcutaneous layer or hypodermis. Each layer has it own function and own importance in maintaining the integrity of skin and thereby the whole body structure. Pressure sores or decubitus ulcers are the result of a constant deficiency of blood to the tissues over a bony area such as a heel which may have been in contact with a bed or a splint over an extended period of time. The surface of the skin can ulcerate which may become infected. Eventually subcutaneous and deeper tisssues are damaged. Besides the heel, other areas commonly involved are the skin over the buttocks, sacrum, ankles hips and other bony sites of the body.…

    • 1415 Words
    • 5 Pages
    Good Essays
  • Good Essays

    The Integumentary System

    • 1117 Words
    • 6 Pages

    Directions: There are five (5) activities in this lab. Please be sure to complete them all. For all questions, type your answers into the yellow box ____ (including your name above) it will expand as you write.…

    • 1117 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    2. List the general functions of the skin? It is a protective covering, retards water loss, helps regulate body temperature, houses sensory receptors, synthesizes various chemicals and excretes small quantities of waste.…

    • 2008 Words
    • 9 Pages
    Powerful Essays
  • Good Essays

    The are three layers of Skin. The Epidermis, the Dermis and the Subcutaneous layer. The Skin is the bodies biggest Organ. Sizes varies. Skin also helps regulate Temperature, helps immune system. Also provides sensations of Touch, Heat, cold and pain in the sensory nerve endings. Pressure Sores are common where there is Less blood in the area affected during long periods of time.…

    • 607 Words
    • 3 Pages
    Good Essays
  • Good Essays

    HSC 2024

    • 643 Words
    • 2 Pages

    Skin is the largest organ of the body, covering and protecting the entire surface of the body. The total surface area of skin is around 3000 square inches or roughly around 19,355 square cm depending on age, height, and body size. The skin, along with its derivatives, nails, hair, sweat glands, and sebaceous glands forms the integumentary system. Besides providing protection to the body the skin has a host of other functions to be performed like regulating body temperature, immune protection, sensations of touch, heat, cold, and pain through the sensory nerve endings, communicating with external openings of numerous other body systems like digestive system, urogenital system, and respiratory system via mucous membranes. The skin is primarily composed of three layers. The skin, which appears to be so thin, is still itself divided into epidermis, dermis, and subcutaneous layer or hypodermis. Each layer has its own function and own importance in maintaining the integrity of skin and thereby the whole body structure. Pressure sores or decubitus ulcers are the result of a constant deficiency of blood to the tissues over a bony area such as a heel which may have been in contact with a bed or a splint over an extended period of time. The surface of the skin can ulcerate which may become infected. Eventually subcutaneous and deeper tissues are damaged. Besides the heel, other areas commonly involved are the skin over the buttocks, sacrum, ankles hips and other bony sites of the body…

    • 643 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    anatomy and physiology

    • 1287 Words
    • 6 Pages

    the skin comprises of layers the epidermis.dermis and subcantanious layer of hypodermis. each layer has its own function and its importanc eof maintiaing the integrity of skin and thereby the whole body structure.…

    • 1287 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    How the body achieves homeostasis of the internal fluid environment through excretion of waste products of metabolism.…

    • 800 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Eskimos wear a great deal of clothing and have limited exposure to U.V. light, but do not suffer from vitamin D deficiency. A possible explanation is…

    • 4732 Words
    • 19 Pages
    Powerful Essays
  • Good Essays

    Be sure to label all of the structures in the epidermis and dermis you were able to find:…

    • 703 Words
    • 3 Pages
    Good Essays

Related Topics