Integumentary System-Exam 1

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Author:
amanda430
ID:
304219
Filename:
Integumentary System-Exam 1
Updated:
2015-06-19 17:17:29
Tags:
Integumentary
Folders:
PA
Description:
Integumentary System
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  1. What does the integumentary system consist of?
    skin, hair, nails
  2. What are the primary functions of skin?
    • Protection
    • sensory input
    • produces vit D
    • secretes sweat, urea and lactic acid
    • expresses emotion (blushing)
    • repairs surface wounds
  3. What are the 3 layers of the skin?
    Epidermis, Dermis, Subcutaneous (hypodermis)
  4. What is the Epidermis made of?
    Stratified squamous epithelium
  5. Describe the blood supply to the epidermis
    Avascular
  6. What is the deepest layer of the epidermis called?
    Stratum Germinativum
  7. What is Keratinization and where does it occur?
    • keratin is deposited, causes cells to be flat, hard and waterproof
    • Stratum Germinativum (deepest layer of epidermis)
  8. What is the outermost layer of the epidermis?
    Stratum corneum
  9. How long does it take for epidermis cells to be replaced?
    4 weeks, 30 days
  10. What is contained in the epidermis?
    hair roots, apocrin sweat glands, ecrin sweat glands, sebaceous glands
  11. What determines skin color?
    Melaninocytes
  12. Describe the vascularity of the Dermis
    Highly Vascular Connective Tissue
  13. What are the two types of sweat glands?
    • eccrine-regulate temp, most common
    • Apocrine- larger, deeper, make body odor
  14. What is the thickness of the Dermis?
    1-4mm depending on where it is
  15. What are the appendages in the integumentary system?
    hair, nails, glands
  16. What does the Eccrine gland do?
    regulates temp, located all over the body
  17. What does the Apocrine gland do?
    • found in axillae (arm pit), ano-genital, Pinna
    • secretes odorless fluid in reaction to emotions
    • when decomposition of Apocrine sweat occurs you get body odor
  18. Describe Sebaceous Glands
    • secretes sebum to help hair and skin stay hydrated
    • all over except for palms and soles
  19. What are the 3 parts of a hair follicle?
    • root
    • shaft
    • follicle
  20. What is the nail?
    epidermal cells converted to hard plates of keratin
  21. What is the white base of your nail called?
    Lunula
  22. Describe the tissue underneath the nail
    • highly vascular
    • Capillary Refill-tells how blood circulation is
  23. Describe the problems with skin in babies
    unable to regulate temp and prevent fluid loss

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