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Can Chemical transmitters stimulate any receptor site to initiate an action?
No, chemical transmitters can only stimulate specific receptor sites that they are designed to bind to. Each transmitter has a specific shape that fits into a corresponding receptor site like a lock and key, triggering a specific response in the target cell. This specificity is essential for precise communication between cells in the body.
Can a receptor be an antigen?
No, they are entirely two different things. What might stimulate a receptor could be an antigen.
What substances has a chemical composition similar enough to dopamine to allow it to fit dopamine receptor sites in the brain?
Substances like norepinephrine, epinephrine, and serotonin have chemical compositions similar enough to dopamine to interact with dopamine receptor sites in the brain. These substances can bind to dopamine receptors and exert similar effects on neural signaling pathways.
Receptor sites are found where?
Receptor sites are primarily found on the surface of cells, embedded in their membranes. These sites interact with specific molecules, such as hormones, neurotransmitters, or drugs, allowing the cell to receive and respond to various signals. Additionally, receptor sites can also be present in intracellular compartments, where they play roles in signaling pathways within the cell.
What autonomic receptor mediates secretion of epinephrine by the adrenal medulla?
The secretion of epinephrine by the adrenal medulla is primarily mediated by nicotinic acetylcholine receptors. These receptors are activated by acetylcholine released from preganglionic sympathetic fibers. This stimulation triggers the adrenal medulla to release epinephrine (and norepinephrine) into the bloodstream, contributing to the body's fight-or-flight response.
What is the first step in epinephrine signaling?
The first step in epinephrine signaling is the binding of epinephrine to its receptor on the cell membrane, typically a G protein-coupled receptor. This binding initiates a cascade of intracellular signaling events that ultimately lead to the desired physiological response.
What receptor does aroma therapy stimulate?
What receptor is stimulated by aromatherapy
When a person is physically stressed what hormone is released quickly to stimulate an increase in blood glucose concentration?
is it epinephrine?
Who Activates the sympathetic nervous system?
epinephrine and norepinephrine stimulate the sympathetic nervous system
Can Chemical transmitters stimulate any receptor site to initiate an action?
No, chemical transmitters can only stimulate specific receptor sites that they are designed to bind to. Each transmitter has a specific shape that fits into a corresponding receptor site like a lock and key, triggering a specific response in the target cell. This specificity is essential for precise communication between cells in the body.
What hormone stimulate bronchiole dilation?
epinephrine aka adrenaline
Can a receptor be an antigen?
No, they are entirely two different things. What might stimulate a receptor could be an antigen.
What hormone is released quickly to stimulate an increase in blood glucose concentration?
Epinephrine
What substances has a chemical composition similar enough to dopamine to allow it to fit dopamine receptor sites in the brain?
Substances like norepinephrine, epinephrine, and serotonin have chemical compositions similar enough to dopamine to interact with dopamine receptor sites in the brain. These substances can bind to dopamine receptors and exert similar effects on neural signaling pathways.
What activates the sympathetic nervous system?
epinephrine and norepinephrine stimulate the sympathetic nervous system
What are holes in the surface of the dendrites or certain cells of the muscles and glands that are shaped to fit only certain neurotransmitters?
Neurotransmitter receptor sites on ligand-gated ion pores.
What hormones are released in response to excessive blood loss?
Epinephrine by adrenal glands to stimulate vasoconstriction
