Anatomy Lecture 1 - Integumentary System

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Anatomy Lecture 1 - Integumentary System
2010-06-11 00:43:16

UNLV DPT 744 Gross Anatomy 1 Lecture 1 - Integumentary System
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  1. What are the primary functions of the Skin?
    Protection, temperature control, sensation, synthesize vitamin D
  2. What are the 4 layers of the skin?
    Epidermis, Dermis, Subcutaneous (Superficial Fascia), and Deep Fascia
  3. What type of epithelium is the Epidermis composed of?
    Stratified Squamous keratinizing epithelium.
  4. Describe the dermis:
    A superficial avascular layer in the skin. It has a deeper basal (regenerating) layer over the pigmented (melanocyte) layer. It also has Langerhans cells that signal the immune system by detecting foreign particles.
  5. Describe the dermis:
    A dense layer of collagen and elastic fibers. Account for the strength and toughness of skin. Contains: hair follicles, arrector pili, sebacous glands, blood vessels and nerves. Nails, the mammary gland, and enamel are derivitives of the dermis.
  6. Describe the superficial of subcutaneous layer:
    Loose, fatty connective tissue. Adipose tissue. Padding. Suderiferous sweat glands. Blood nad Lymph Vessels. Helps control thermal regulation.
  7. Describe the deep fascia layer:
    Dense organized tissue that covers dep structures like muscles. Forms compartments to help maintain muscle alignment and prevent spread of infection. The compartments help increase pressure for venous return.
  8. Given an example of a condition resulting from dysfunction in the deep fascia.
    Shin splits. The anterior compartment is to tight causing pain and inrritation.
  9. What is the funtion of the sweat gland?
    Thermal regulation through water evaportation on the skin
  10. What is the function of the sebaceous glands?
    Associated with hair follicles, secrete oil to maintain the integrity of the skin
  11. What is the function of hair follicles?
    Hair grows from the follicles. They have arrector pili muscles to erect the hair in response to fright (autonomic) and touch (sensory)
  12. What is the funciton of the afferent nerve endings?
    Provide sensor innervation for touch, pain and temperature.