2006-10-20 14:04:57 · 6 answers · asked by eunjin098 1 in Science & Mathematics ➔ Biology
In simple reflex arcs, such as the knee jerk, the stimulus is detected initially by a receptor cell.
This signals to a sensory neuron. The sensory neuron carries the impulse from the site of the stimulus to the central nervous system (the brain or spinal cord), where it synapses with an interneuron. The interneurone then synapses with a motor neuron, which carries the nerve impulse out to an effector, such as a muscle, which then responds by contracting.
2006-10-20 20:14:19 · answer #1 · answered by the last ninja 6 · 2⤊ 0⤋
Simple Reflex Arc
2016-10-13 22:15:14 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Simple reflexes only go from the point of stimulus, to the spinal cord, and back. (Its why you pull your hand away from a hot stove before you even realize what happened.)
2006-10-20 15:44:04 · answer #3 · answered by Westward 2 · 0⤊ 0⤋
So really, whats the question?
2006-10-20 14:11:31 · answer #4 · answered by Lourdes 2 · 0⤊ 0⤋
afferent neurons-->interneuron(spinal chord)-->efferent neuron
2006-10-20 19:54:29 · answer #5 · answered by shkabaj 3 · 0⤊ 0⤋
http://www.ivy-rose.co.uk/Topics/Nerve_Function.htm
2006-10-20 17:48:01 · answer #6 · answered by Ivy 2 · 0⤊ 0⤋