1
Q
definition:
A
a rapid, automatic response to a stimulus.
2
Q
what do reflexes require?
A
- a stimulus
- they are involuntary
- are rapid
- are stereotypes (occur in the same way each time
3
Q
what are spinal reflexes?
A
carried out by the spinal cord, with no brain involvement required
4
Q
what does a spinal reflex consist of?
A
- a receptor
- a sensory neuron –> through the dorsal root
- at least on synapse
- a motor neuron –> through ventral root
- a effector (muscle or gland)
5
Q
what are receptors?
A
the decet changes in the bodies internal or external environment
can be simple nerve endings or sensory organs e.g the eye
6
Q
types of receptors
A
thermoreceptors osmoreceptors chemoreceptors touch receptors pain receptors protective reflexes present from birth acquired reflexes
