Many of the chemicals that affect the brain operate by
a. absoring neural impulses
b. imitating or cancelling the effects of neurotransmitters
c. changing the sodium balance in the synapse
d. duplicating the effect of the potassium in the nuclei
B
I searched Google under the key words "neurotransmitters" to get these possible sources:
http://en.wikipedia.org/wiki/Neurotransmitter
http://faculty.washington.edu/chudler/chnt1.html
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.
A. Absorbibg neural impulses
The correct answer is b. imitating or cancelling the effects of neurotransmitters.
To arrive at this answer, we first need to understand the function of neurotransmitters in the brain. Neurotransmitters are chemicals that transmit signals between neurons, allowing for communication in the brain. They play a crucial role in regulating various functions, such as mood, memory, and behavior.
When it comes to chemicals that affect the brain, they typically operate by imitating or cancelling the effects of neurotransmitters. Let's break down the other options to understand why they are incorrect:
a. Absorbing neural impulses: Neural impulses are electrical signals that travel through neurons, enabling communication. While certain drugs or chemicals can affect the transmission or reception of neural impulses, they do not absorb them.
c. Changing the sodium balance in the synapse: The balance of sodium and other ions in the synapse is essential for proper functioning of neural communication. However, drugs or chemicals that affect the brain do not primarily operate by changing the sodium balance in the synapse.
d. Duplicating the effect of the potassium in the nuclei: Potassium is an important electrolyte involved in many physiological processes, including the resting potential of neurons. However, chemicals that affect the brain do not duplicate the effect of potassium in the nuclei.
In summary, chemicals that affect the brain typically operate by imitating or cancelling the effects of neurotransmitters. This allows them to interact with the brain's neural communication system and influence various functions.