INTEGUMENTARY SYSTEM

• Integumentary System


  Talks about human skin and things connected to it
• Skin


  Largest organ of the human body
• Integument


  The skin and its appendages (hairs&nails)
• Functions of Integument

  • Protection
  • Thermoregulation
  • Water Balance
  • Incoming Messages
  • Outgoing Messages
  • Substance Production
• Layers of the Skin


  • Epidermis
  • Dermis
  • Hypodermis
• Epidermis


  Stratified Squamous Tissue top most layer of the skin
• Dermis


  Thickest layer of the skin
• Hypodermis


  Subcutaneous tissue bottom layer of the skin
• Layers of Epidermis


  • Basale
  • Spinosum
  • Granulosum
  • Lucidum
  • Corneum
• Basale


  Innermost layer of epidermis
• Lucidum


  Can only find in our palm & pedal
• Corneum


  Hard dead cell full of keratin,self repairing,place where you can find your libag
• Melanocytes


  Contains pigment cells, produce the skin colouring or pigment known as melanin
• Keratinicytes


  Cell compromise epidermis
• Layers of Dermis

  • Papillary Region
  • Reticular Region
• Papillary Region


  Made up of basement membrane and pappilae(finger print)
• Reticular Region


  Contains protein fibers,metabolic layers
• Adipose Tissue


  Storage of energy
• Skin Accessory Structures

  • Hair
  • Nails
  • Glands
• Hair Follicle


  A small tube made up of epidermal cells that can extend down to our dermis
• Hair Papilla


  It has the ability to continually divide and produce cells
• Keratin


  Protein that is produced by skin cells in mammals,birds,reptiles
• Alpha Keratin


  Main components of hair (soft)
• Beta Keratin


  Can be found in human nails (hard)
• Hair Shaft


  Once the hair is already in the outside of epidermis
• Finger Nails


  Lie on your nailbed
• Nail Root


  Back of the nail bed
• Lunula


  Bottom of our nails
• Glands

  • Sudoriferous Glands
  • Sebaceous Glands
• Sudoriferous Glands


  Sweat Glands
• Sebaceous Glands


  Oil Glands
• Types of Sweat Glands

  • Eccrine Sweat Glands
  • Apocrine Sweat Glands
• Eccrine Sweat Glands


  Distribute allover the skin, more on sweat
• Apocrine Sweat Glands


  It contains milky white substance and hormones
• Types of Sebaceous Glands

  • Sebum
  • Vernix Caseosa
  • Cerumen
• Sebum


  It makes our hair to be oily and protect us from different infections
• Vernix Caseosa


  Layer of stick sebum in human fetus