flashcards på keywords
What is the parasympathetic nervous system?
The parasympathetic nervous system is a part of our automatic nervous system that helps control our body functions without conscious effort.
What are centers and efferent parts?
Centers and efferent parts are specific regions in our central nervous system that send out signals to control different parts of our body.
What are transmitters and corresponding receptors?
Transmitters are chemical messengers released by nerves, and corresponding receptors are special receivers that receive these messages.
What is a higher center?
The higher center refers to the hypothalamus, which is a part of our brain responsible for controlling important functions in our body.
What is a lower center?
The lower center refers to a specific region in our spine (lower back) that helps control bodily functions.
What are nuclei?
Nuclei are groups of nerve cells in our central nervous system that work together to perform specific functions.
What is an intramural ganglion?
An intramural ganglion is a cluster of nerve cells located inside the walls of an organ that help transmit signals.
What is a prevertebral ganglion?
A prevertebral ganglion is a cluster of nerve cells located near an organ, but not inside it, that also help transmit signals.
What is a neurotransmitter?
A neurotransmitter is a chemical messenger that nerves use to communicate with each other.
What are nicotinic receptors?
Nicotinic receptors are specific receptors found on nerves that bind to acetylcholine, allowing the messages to be transmitted.
What are muscarinic receptors?
Muscarinic receptors are receptors found on target cells that bind to acetylcholine and have specific effects.
What is monoamine oxidase (MAO)?
Monoamine oxidase (MAO) is an enzyme that helps break down certain chemicals, including neurotransmitters like norepinephrine and epinephrine.
What is catechol-O-methyltransferase (COMT)?
Catechol-O-methyltransferase (COMT) is an enzyme that helps break down circulating hormones, such as norepinephrine and epinephrine, in our body.
What is vanillyl mandelic acid (VMA)?
Vanillyl mandelic acid (VMA) is the end product that is formed when norepinephrine and epinephrine are broken down, and it is excreted from our body through urine.
