DEFINITIONS
Neurobiology = the study of nervous systems of animals. Nervous systems are used in response to stimuli.
Behavior= pattern of responses in an animal (ex. reflexes)
Stimulus = change in the external or internal environment that is detected by a receptor and releases a response
Response = a change in an organism, produced by a stimulus
Reflex = a rapid and unconscious response to a stimulus
REFLEX ARC (series of neurons in order for reflex response to occur)
Example of reflex taking place: Rabbit touches a stinging nettle plant for the first time with the tip of its nose.
a.) Nerve endings in the skin of the rabbit’s nose detect the pain. The cells are called pain receptors. Pain receptors = nerve endings of sensory neurons
b.) Sensory neurons carry impulses from the rabbit’s nose to the central nervous system
c.) Impulses travel to the ends of sensory neurons where there are synapses with relay neurons. Messages are passed through the synaptic cleft; to the relay neurons through synaptic transmission.
d.) The relay neurons have synapses with motor neurons, which carry impulses out of the CNS to the muscles in the rabbit
e.) Impulses are passed across synapses from motor neurons to muscle fibers. It pulls the rabbit’s nose away from the plant.
Connections between different types of neurons are referred to as “co-ordination’.
THE PAIN WITHDRAWAL REFLEX
https://sites.google.com/a/canacad.ac.jp/sl2-biology-ferguson/18-behavior/e-1-stimulus-response
Alisa's Blog 
Posted on February 21, 2014
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