Figures

  • Area: 1,5 – 2,0 m²
  • Weight: 15 – 20 % of bodyweight

Total numbers:

  • Cells: 110 billion
  • Pigment cells: 2 billion
  • Capillaries: 240 million
  • Sweat glands: 2 million
  • Sebaceous glands: 350,000
  • Hair follicles: 5 million
  • Scalp hairs:100,000-150,000
  • Beard hairs: 25,000
  • Eyebrows: 600
  • Eyelashes: 400
  • Free nerve endings (pain): 4 million
  • Meissner’s corpuscles (pressure): 350.000
  • Merkel’s cells (pressure): 60.000
  • Pacinian corpuscles (vibration): 50.000
  • Krause’s receptors (cold receptors): 240.000
  • Ruffini’s receptors (heat receptors): 40.000

 

Blood vessels:

  • Total length of all vessels in the body: 1.440 km
  • Total length of capillaries in the skin: 240 km
  • Daily volume of blood flow in the skin: 160 litres
  • Blood storage capacity of the skin: 1 litre

Performance of the adnexae of the skin (in 60 years)

  • Keratin:13,2 kg = 600 km hair, 29 m finger and toe nails
  • Sebum:42 kg
  • Sweat:10,000 – 20,000 litres with 75 – 150 kg common salt

 

Of 100 million horny scales covering the surface of the skin, about 10 million (0.1 – 1.0 g keratin) are shed every day..