Transcript mechanoreceptors

Mechanoreceptors
Mechanoreceptors
- Mechanoreceptors are stimulated by mechanical
compression or stretch at the receptor or surrounding
tissues.
- Found in skin for sensing contact with
physical world.
-Found in bladder, blood vessels, heart, digestive
organs, and teeth to sense pressure.
- Mechanoreceptors are innervated by
myelineated axons.
Mechanoreceptors
Receptors can be classified according to the type of stimulus into:
1-Tocuh receptors in the skin which are stimulated by light mechanical stimuli.
2-Pressure receptors in the subcutaneous tissues which are stimulated by
deep mechanical stimuli.
3-Stretch receptors in the skeletal muscles, lungs, right atrium, urinary
bladder, stomach, intestine and rectum.
4-Joint receptors which send information about the position and movement
of the of the joint.
5- Auditory receptors which are stimulated by sound waves
Types of Mechanoreceptors
Types of Mechanoreceptors
Type
Adaptation
Very rapidly
Rapidly
Rapidly
Location
Nerve
fiber
Sensation encoded
Subcutaneous
A-delta
Vibration , pressure
Dermis
(Nonhairy skin )
A-delta
Vibration , light touch
A –delta
Movement of hair
Stretch,joint rotation
Hairy skin
Slowly
Dermis(hairy),
Ligament, tendon
A-delta
Slowly
Epidermis
(nonhairy skin)
A-delta
Slowly
Hairy skin
A-delta
Light touch
Light touch
DONE BY:
Fahad Tami Alzahrani
430102544