The Parasympathetic Division arises from cranial and sacral
nerves.
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The division of the autonomic nervous system that arises from
spinal nerves T1 to L3 is the sympathetic division. This division
is responsible for controlling involuntary body functions.
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Same as need arises.
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The portin of the stem where the leaf arises is called the
node.
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The yolk sac arises from the ovum to nourish the embryo.