which direction are afferent nerves towards and what kind of fibres are they?
towards the CNS and sensory
which direction are efferent nerves towards and what kind of fibres are they?
away from the CNS and motor
what is the letter system for?
sensory and motor
what is the roman numeral system for?
sensory
what is Ia for?
muscle spindle primary endings
what is Ib for?
golgi tendon organs
what is II for?
- touch
- kinaesthesia
- muscle spindle secondary endings
what is III for?
- pain
- crude touch
- pressure
- temperature
what is IV for?
- pain
- touch
- pressure
- temperature
what is A-alpha for?
- alpha-motoneurons
- muscle spindle
- golgi tendon organs
- touch
what is A-beta for?
- touch
- kinesthesia
- muscle spindle
what is A-gamma for?
- touch
- pressure
- gamma motoneurons
what is A-delta for?
- pain
- crude touch
- pressure
- temperature
what is B fibres for?
- preganglionic autonomic
what is C fibres for?
- pain
- touch
- pressure
- temperature
- postganglionic autonomic
what does hair follicle receptors detect?
movement of hair
what does meissner corpuscle detect?
- light touch
are meissner corpuscle rapid or slow adaptive receptors?
rapid
what does pacinian corpuscle detect?
vibration
what does merkel cell detect?
touch and pressure
what does ruffini corpuscle detect?
skin stretch
what does free nerve endings detect?
nociception
how does sensory transduction work?
- converts energy in stimulus into changed electrical potential across membrane
- cause depolarisation of membrane to allow action potential to be transduced
which three sensory receptors are rapid adapting?
- meissner corpuscle
- hair follicle receptor
- pacinian corpuscles
