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Volgvan
3 years ago
13

Why are neurotransmitters not considered hormones?

Biology
1 answer:
Likurg_2 [28]3 years ago
6 0
They are two separate chemical messengers with some overlap as some molecules can act as both hormones and neurotransmitters. One example of this overlap is norepinephrine which can be released into the bloodstream by the adrenal glands as a hormone or can be released by sympathetic nerve endings as a neurotransmitter.
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What are the charges both inside and outside of the neuron before you click the stimulate neuron button?
evablogger [386]

Answer:

The charges inside and outside of the neuron before receiving a stimulus are negative and positive, respectively, which corresponds to the transmembrane rest potential.

Explanation:

Neuron is the specialized cell of the nervous system in charge of transmitting electrical impulses. The generation of a nerve impulse in the form of an electric current is due to a change in the transmembrane potential.

<u>Outside the neuron cell, electrical charges are predominantly positive, and the ion with the highest concentration is sodium. In the intracellular space, a great quantity of proteins provide negative charge, and there is a predominance of potassium ions</u>. Under these conditions, the ionic channels are closed.

For this reason, a neuron at rest, before receiving a stimulus, presents positive charges on the outside and negative charges on the inside, and the membrane potential in this condition is estimated at a value of -65 mV.

Once a stimulus is produced, the ionic channels open and Na+ ions enter the cytoplasm, exchanging them for K+, which implies a change in the membrane potential which, on reaching the threshold, produces an action potential and the nerve impulse is produced.

3 0
3 years ago
Fire is an example of a living thing?
Alenkasestr [34]

Answer:

Fire Is A Non-Living Thing.

Explanation:

People sometimes think fire is living because it consumes and uses energy, requires oxygen, and moves through the environment. Fire is actually non-living. The reason fire is non-living is because it does not have the eight characteristics of life. Also, fire is not made of cells.

3 0
2 years ago
Need answer quick please thanks
Andre45 [30]

Answer:

Aa would be ur answer:)))

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He Earth is constantly spinning on its axis, like you might spin a basketball on your finger.
inn [45]

Answer:

the cycle of night and day

hope this helps :p

Explanation:

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