Touch, Dermatomes And Referred Pain Flashcards
What are the somatic sensations?
Pressure
Touch
Pain
Temperature
Proprioception
How do the Slavic sensations differ from other sensory systems?
- Receptors are distributed throughout the body
- Responds to many different kinds of stimuli
Where do somatic sensations come from?
From the skin, bones, tendons and joints
What type of receptor are the touch receptors?
Mechanoreceptors
Where do the Mechanoreceptors for touch reside?
Dermis of the skin
What are the Mechanoreceptors sensitive to?
Physical distortion
Where does sensation of touch begin?
Skin
A = hair receptor
Where are the exteroceptors?
Skin
Where are the interoceltors?
Viscera
Where are the proprioceptors?
Muscles and joints
What primarily senses skin stretching, movement and finger position?
Ruffini corpuscles
Where do the sensory information pass?
Dorsal root ramus (columns)
What information do the dorsal columns carry?
Information about tactile sensation (and limb position) towards brain
A = gasserion ganglion
B = trigeminal nerve nucleus
What is an example of a peripheral nerve lesion?
Glove and socking - in diffuse neuropathies
What are nerve root lesions associated with?
Dermatologist pattern of sensory loss
A = mid brain stem lesion
B = hemisphere lesion (thalmic lesion), loss of sensation over the wholecondralateral, half of body
What is a dermatome?
The area of skin supplied by a particular spinal/ cranial nerve
What spinal nerves are responsible for gastric ulcer pain?
T7-T8
Can you feel sensation heart attack sensation in your arm?
Yes
What do nocirecepyors detect?
Pain
What receptor detects water concentration in blood?
Osmoreceptors
