AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

STUDYING THE BRAIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Because messages cannot occur over synapses on their own, they require the help of ____
A
Myelin
B
Neurotransmitters
C
Axons
D
Dendrites
Explanation: 

Detailed explanation-1: -Their job is to carry chemical signals (“messages”) from one neuron (nerve cell) to the next target cell. The next target cell can be another nerve cell, a muscle cell or a gland.

Detailed explanation-2: -The neurotransmitters carry the message with them into the synapse. The synapse is the space between the axon of one neuron and the dendrites of another neuron. neuron, called receptors. The neurotransmitters fit into the receptors like keys in locks.

Detailed explanation-3: -When neurons communicate, the neurotransmitters from one neuron are released, cross the synapse, and attach themselves to special molecules in the next neuron called receptors. Receptors receive and process the message, then send it on to the next neuron. 4. Eventually, the message reaches the brain.

Detailed explanation-4: -After a neurotransmitter molecule has been recognized by a post-synaptic receptor, it is released back into the synaptic cleft. Once in the synapse, it must be quickly removed or chemically inactivated in order to prevent constant stimulation of the post-synaptic cell and an excessive firing of action potentials.

There is 1 question to complete.