Chapter 12 Part II Flashcards
What is the PNS System ? And what are the two subdivision systems?
Includes Neural structures outside of the CNS , Somatic nervous system and Automatic nervous system
What are the responses of mechanoreceptors?
Touch, pressure, vibrations, stretch, & itch (mechanical force)
What are the stimulus responses of thermoreceptors?
Detection of temperature changes (like hot or cold)
What is the stimulus response of photoreceptors?
The detection of light energy in the retina and they convert light
What is the stimulus response of chemoreceptors?
Depending on the chemical stimuli in the environment, the primary function is taste or smell
What is the stimulus response of nocireceptors?
Notifying and indicating pain to the body
What are exteroceptors? And what organs do they target?
Stimuli from the outside of the body (most exposed parts), eyes and nose
What are interoceptors? , and what do they target
response to stimuli within the body, visceral and blood vessels
What are proprioceptors, and where are they found?
A sensory tissue located into deep tissue, skeletal muscle and heart muscle
What are exteroceptors sensitive to?
Touch, pressure, pain, temperature
What are interceptors sensitive to?
Chemical change, stretch, temperature changes
What are proprioceptors responsive to?
Organ lengthening
What are simple receptors? Where are they located at? and are they unencapsulated or encapsulated?
Free nerve endings, skin, joints, viscera, oral cavity.. unencapsulated
What are complex receptors? And where are they located?
Sensory neuron found in special senses, located in retinal rods, olfactory ligaments
What is pain threshold?
Activation of pain (temperature or pressure)
