1. Senses in the Skin

2. Senses in the Skin
There are several different types of sensory nerve endings in the skin
These endings are called receptors because they are the parts of the nervous system from which information is received
The receptors are named according to their function

4. Touch Receptors (Meissner’s corpuscles)
Located immediately below the epidermis
Most numerous in the tongue and fingers
They are stimulated by light pressure on the skin

5. Allow a person to distinguish between rough, smooth, hard and soft
A different touch receptor detects hair movement

7. Pressure Receptors (Pacinian corpuscle)
Located beneath the dermis
Stimulated by heavy pressure

8. Pain Receptors (Nociceptor)
Located in the epidermis and dermis
Evenly distributed throughout the skin
They occur almost everywhere throughout the body except the brain
This is why we can be awake during brain surgery and still feel sensation, but no pain

10. Temperature Receptors (thermoreceptors)
There are separate hot and cold receptors
They are stimulated by sudden changes in temperature

12. Sweat Glands Adults have over 2 million sweat glands
There are two types:
The first kind is found everywhere on the body except on the lips. They produce a watery solution of salt and urea which evaporates from the skin and cools the body

15. The second kind is found under the arms and in the groin area
The second kind is found under the arms and in the groin area. They produce a thicker liquid. The bacteria on your skin feed off this and produce substances that stink!