Answer:
For the sympathetic nervous system:
i. the preganglionic neurotransmitter is acetylcholine, while
ii. the postganglionic neurotransmitter is norepinephrine
For the parasympathetic nervous system both pre- and postganglionic neurones use acetylcholine as their neurotransmitter.
Explanation:
Sympathetic and parasympathetic nervous system are the two components of the autonomic nervous system.
The sympathetic system arises from the the thoracolumbar (T1-L2) region of the spinal cord.
The parasympathetic nervous system originate from
i. the cranial nuclei in the brainstem (brainstem nuclei cranial nerve III, VII, IX, and X), and
ii. sacral nerves (S2-S4).
Preganglionic and postganglionic neurones link both sympathetic and parasympathetic systems to their effector organs.
At synaptic junctions in the autonomic ganglia ththe preganglionic neuron of both sympathetic and parasympathetic nervous system use cholinergic neurotransmitter (acetylcholine). The postganglionic neurotransmitters are not the same for both sympathetic and parasympathetic systems. The sympathetic uses norepinephrine (adrenergic) while the parasympathetic maintains the acetylcholine.
Answer:
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Explanation:
Fermentation is another anaerobic (non-oxygen-requiring) pathway for breaking down glucose, one that's performed by many types of organisms and cells. In fermentation, the only energy extraction pathway is glycolysis, with one or two extra reactions tacked on at the end.
In feedback inhibition, binding of the end product to the allosteric site slows down or stops the enzyme’s activity so that little or no new end product is produced. When levels of the end product drop, the enzyme will encounter fewer particles of the end product and its activity will increase again.
motor nurons or sensor nurons?
Explanation:
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