Integument

• what is the functions of integument

  protection

  secretion

  storage

  thermoregulation

  communication

  synthesis of vitamin D
• what are the 5 layers of epidermis

  stratum germinativum

  spinosum

  granulosum

  lucidum

  corneum
• what is the role of stratum germinativum

  produce keratiriocytes
• what is the role of stratum spinosum

  aids skin in strength and flexibility

  cells produce keratin
• why is stratum granulosum more rigid

  no nuclei so more space for keratin
• what is the role of stratum granulosum

  creates keratin and lipid barrier for protection
• where is stratum lucidum found

  thick skin
• what is the function of stratum lucidum

  reduce friction between granulosum and corneum
• what colour is stratum lucidum

  clear
• what is the function of stratum corneum

  barrier to chemicals
• what is the appearance of stratum corneum cells

  flat and dead
• what are the 3 layers of the skin

  epidermis

  dermis

  hypodermis
• describe the epidermis

  layer of dead cells

  avascular
• dermis contains many receptor cells
• what are the 4 hair types

  primary

  secondary

  sinus hair

  tylotrich
• describe the anagen stage of hair growth

  growth phase of hair follicle
• describe the catagen stage of hair growth

  transitional phase, end of active stage
• describe the telogen stage of hair growth

  resting stage
• what does nociceptors detect

  pain
• describe the hypodermis

  loose layer of connective tissue
• what do sebaceous glands secrete

  sebum that helps communication
• where are circumoral glands found

  cats lips
• what do meibomian glands secrete

  oil to prevent tear evaporation then ulcers
• what is a conical papillae

  covering of the paw that provides traction
• what are claws made of

  keratinised epidermis
• how long would no blood supply growth be considered a failed skin graft

  3-4 weeks