vladisking888
17.04.2020 •
Biology
What is a population? How do different populations affect one another?
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Ответ:
A population is all the inhabitants of a particular town, area, or country. Different populations affect one another because if you have two populations then they will interact and affect each other because they need each other to thrive.
Explanation:
Ответ:
Some differences between the sympathetic and parasympathetic nervous systems:
Explanation:
- Neurotransmitters: norepinephrine in sympathetic (adrenergic fibers) and acetylcholine in parasympathetic (cholinergic fibers)
-The sympathetic nerves have their origin in the spinal cord (between segments T-1 and L-2) and from there to the paravertebral sympathetic chain, then in tissues and peripheral organs.
- The parasympathetic nerves have their origin in the brain stem, mainly in the cranial nerve nuclei III (oculomotor), VII (facial), IX (glossopharyngeal) and X (vagus) and in the sacral medulla.