Touch Flashcards
What is the medical term for touch?
Somatic senses
What is proprioception?
recognition of body position
What is nociception?
Pain
What is the technical term for feeling pain?
Nociception
What is the term used for the recognition of body position?
Proprioception
What is the somatosensory system meaning?
Touch
Where would you find sensory receptors?
Epithelia, skeletal muscles, bones, joints, internal organs and the cardiovascular system
What are the three types of receptors?
Thermoreceptors, mechanoreceptors and chemorecpetors
What ado chemoreceptors do?
Change chemical signals into action potential
Where is the primary somatosensory cortex?
The parietal lobe of the cerebral cortex
What are the different types of somatosenses?
Cutaneous, kinesthesia and visceral
How many neurons are involved in somatosensory signals?
at least 3
Where is the primary neuron located?
dorsal root ganglion of the spinal nerve
Where would you find the secondary neuron?
In the spine or brain stem
Where does the secondary neuron terminate?
The ventro-posterior nucleus of the thalamus
Where does the tertiary neuron finish?
The postcentral gyrus of the cerebral cortex
The dorsal column medial lemniscal pathway transmitts what sort of information?
Fine touch, vibration and concious proprioceptive information
What pathway does fine touch, vibration and concious proprioceptive information travel through?
The dorsal column medial lemniscal pathway
The ventral spinothalamic pathway transmits what sort of information?
Pain, temperature, itch and crude touch
What pathway does pain, temperature, itch and crude touch travel through?
The ventral spinothalamic pathway
The dorsal spinocerebellar pathway transmits what sort of information?
Proprioceptive information
The ventral spinocerebellar pathway transmits what sort of information?
Proprioceptive information
What pathway does proprioceptive information travel through?
The dorsal and ventral spinocerebellar tracts
What is the name for a somatosensory map?
Homunculus
What is pain?
An unpleasant sensory and emotional experience associated with actual or potential tissue damage
What is nociceptive pain?
Stimulation of peripheral nerve fibers that respond only to stimuli approaching or exceeding harmful intensity
What do we call an unpleasant sesory and emotional experience associated with actual or potential tissue damage?
Pain
What is caused by the stimulation of peripheral nerve fibers that respond only to stimuli approaching or exceeding harmful intensity?
Nocicptive pain