L1: Integumentary system

• The Organsation Level

  1. Chemical Level
  2. Celluar Level
  3. Tissue Level
  4. ORGAN LEVEL
  5. Ssystem level
  6. Organisation Level
• What are the eleven body systems?

  1. Integumentary
  2. Respiratory
  3. Muscular
  4. Skeletal
  5. Nervous
  6. Endocrine
  7. Lymphatic and Immune
  8. Urinary
  9. Cardiovascular
  10. Digestive
  11. Reproductive
• Chemical:

  The building blocks of the body. For example, atoms and these joint to form molecules
• Celluar- Basic structural and functional units of the body. E.g. cardiac muscle cells
• Tissue:

  • Tissues are groups of cells that work together to perform a particular function
  • 4 Major classes: Epithelial, Connective, Muscle, Nerve
  • E.g. Cardiac muscle
• Organs are structures with specific functions composed of two or more types of tissues. E.g. Heart
• A system consists of related organs with a common function. E.G. cardiovascular
• Organismal- All the parts of the body function together to consistute a living organism. E.G. the individual
• What are the organ structures of the integumentary system?

  1. Epidermis
  2. Dermis
  3. Hypodermis
• What are the primary functions of the epidermis?

  • Protects: covers surface
  • Protects: deeper tissues
  • Produces: Vit. D production
• What are examples of chemical?

  Atoms (smallest stable units of matter) and these joint to form molecules (complex shapes and activities)
• What are examples of celluar ?

  Cardic muscle cells
• What are examples of tissues?

  Cardic muscle
• What is an example of organ?

  Heart
• What is an example of system?

  Cardiovascular system
• What is an example of organisma?

  An individual
• What is the organ structure in the dermis?

  1. Hair follicles- hair sebaceous glands
  2. Sweat glands (breast tissue is modified sweat gland)
  3. Nails (epidermis and dermis)
  4. Sensory receptors
• What is the primary function of the dermis?

  1. "Feeds" epidermis; strength; glands
  2. Sensation from innervation, protection, lubricates hair shaft and epidermis
  3. Thermoregulation: evaportive cooling (sweat)
  4. stiffen and protect digits
• What sensation does the dermis detect?

  Touch; pressure, temperature, pain
• What is the primary function of hypodermis?

  Fat stores; attaches skin to deeper layers
• What are the two layers in the dermis?

  1. Papillary layer: areolar tissue
  2. Reticular layer: dense irregular connective tissue
• The hypodermis seperates the integument from deeper organs
• What are the two major components in the integumentary system?

  the cutaneous membrane and accessory structures- hairs, nails, and exocrine glands (sebaceous and sweat glands)
• What supports the skin function?

  Blood vessels and nerve fibers.