Sensory systems

1st, 2nd and 3rd order neurons relaying information from the periphery to higher centres

According to structure, according to location, according to type of stimulus detected

Free nerve endings, encapsulated nerve endings, separate cells

<p>Exteroreceptors, interoreceptors, proprioceptors</p> Signup and view all the answers

<p>Mechanoreceptors, chemoreceptors, thermoreceptors, osmoreceptors, nociceptors, photoreceptors</p> Signup and view all the answers

<p>When pressed, the lamellae deforms, this presses on the tip of the sensory neuron. This deforms plasma membrane and becomes leaky to the sodium ions. Depolarises the membrane at site of deformation</p> Signup and view all the answers

<p>Receptors that adapt quickly, will only inform CNS about immediate environmental/internal changes</p> Signup and view all the answers

<p>Receptors that adapt slowly and continuously inform CNS of environmental/internal changes (e.g. muscle spindles)</p> Signup and view all the answers

<p>An area in which stimulation leads to response of a particular sensory neuron</p> Signup and view all the answers

<p>1st order neuron relays info from sensory receptors to spinal cord/brainstem, 2nd order neurons conduct impulses from sc/bs to thalamus (VPLN), 3rd order neuron conduct impulses from the thalamus to the sensory cortex</p> Signup and view all the answers

<p>Pain, thermal, tickle, itch, crude touch, pressure</p> Signup and view all the answers

<p>Free nerve ending</p> Signup and view all the answers

<p>Lateral</p> Signup and view all the answers