Sensitve of the skin.

1.  a) When the receptors are stimulated, they send out nerve impulses along the nerves to the              
         brain.
    b) The brain interpprets these impulses as the sensation of touch.
    c) It will then send suitable messages to the effectors as how to react.

2. The skin on different parts of the body has different part of the body has different degrees of  
    sensitivity.
    a) The fingertips, the lips, the tongue, the nose, and the neck are more sensitive to touch.

3. The sensitive of the skin depends on:
    a) the distance between the receptors
    b) the thickness of the epidermis

4. The skin on parts of the body which has thinner epidermis and more receptors is more sensitive  
    to touch.

5. a) Blind poeple use their sense of touch to identify object in their environment.
    b) They use their fingertips to read book in braille.



6. Doctors usually give injections to their patients on their forearms or buttocks because these areas are less sensitive to touch and pain.