If there is an increase in stimulus strength on a pain receptor but more pain is not felt, which of the following would explain this? sodium channels are opened with the stimulus    stimulus increase from submaximal to subthreshold pain receptor adapt to the large stimulus  frequency of action potentials os unchanged

How many points would be felt in the example below? Explain your answer. Sensory neurons O 2 O 1 O 4 O 3

Condtions that compress peripheral nerves differentially affect nerve fibres over time, causing loss of sensorimotor function. What is the correct order of loss (first to last)?     pain & temperature, touch, vibration, and joint position sense     joint position sense, pain & temperature, touch, and vibration       pain & temperature, vibration, joint position sense and touch     joint position sense, touch, vibration and pain & temperature     touch, vibration, joint position sense, pain & temperature

Which of the following can readily adapt to a continuous stimulus! baroreceptor somatic pressure receptor Osmoreceptor somatic pain receptor visceral pain receptors

Identify, in correct order, of sensation to perception, the major connections of the pathway underlying fine touch, and pressure.   afferent axons decussate at medulla    primary somatosensory cortex activated somatosensory humunculus according to where on body touch was felt   free nerve endings depolarize dendrites of peripheral afferents   axons in the medial lemniscus terminate in the ventral posterior nucleus of the thalamus   axons of afferents enter into dorsal horn of spinal cord and ascend ipsilaterally

Proprioceptive sensations include all the following, except :-a- position senseb- equilibrium sensec- movement sensed- kinesthetic sense

examples are of pain blocking drugs are ketamine and propofol. Ketamine decreases the function of NMDA receptors and propofol increases the function of GABA receptors. Why do you both of these drugs block pain, when they have opposite effects on the receptors they bind to?

Describe the pain pathway

Detection of the stimulus modality depends upon :-a- the location of the receptors in the bodyb- the magnitude of the stimulusc- the anatomical connections between the receptors and specific sensory areas in the cerebral cortexd- the magnitude of the receptor potential

Action potential frequency in phasic receptors with a prolonged stimulus..... action potential frequency in tonic receptors with a prolonged stimulus. greater than less than equal to