Skin

Question 1

Type of hair

Answer 1

Lanugo - foetus - thin, soft, replaced after birth
Vellus- replace lanugo soft, fine
Terminal - thick, dark, long produced by testosterone

Question 2

Mechanoreceptors

Answer 2

End bulbs - Thermoreceptors

Free nerve endings - nociceptors - pain

Tactile disks - merkel cells (thick skin) - touch
                             Meissner cells (thin skin)

Meissner corpuscle - tapping and flicking

Pacinian corpuscle - pressure

Raffinis corpuscel - joint movements

Root hair plexus - vibrations

Question 3

Nail

Answer 3

Nail plate
Nail bed
Nail matrix
Surrounding grooves