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What binds to a signal molecule enabling the cell to respond to the signal molecule?
A receptor protein on the cell membrane binds to the signal molecule, initiating a series of intracellular events that lead to a cellular response. The binding of the signal molecule to the receptor triggers a signaling cascade that ultimately activates specific cellular pathways.
Which of these activates an olfactory receptor and causes the transmission of information about a smell?
An odorant molecule binds to the olfactory receptor, which triggers a signaling cascade leading to the transmission of information about the smell to the brain.
An allosteric receptor embedded in a cell membrane will change shape only?
An allosteric receptor embedded in a cell membrane will change shape in response to the binding of a specific molecule or ligand, which causes a conformational change in the receptor. This change in shape can alter the receptor's ability to interact with other molecules or signaling proteins within the cell, ultimately triggering a cellular response.
The process by which the brain causes a sensation to seem to come from the stimulated receptors is called?
The process by which the brain causes a sensation to seem to come from the stimulated receptors is called sensory localization. This involves the brain integrating sensory information from different receptors to create a coherent perception of the world around us, including determining the location of the source of a sensation.
Neurotransmitters are released in a synapse and bind to?
a receptor structure in a ligand-gated sodium-ion pore. The receptor is like a cave which is an outer part of a protein structure which also has a tunnel which can be open or closed, and the presence of the neurotransmitter causes the tunnel (pore) to open.
Is norepinephrine cause bronchial relaxation?
No, norepinephrine typically causes bronchial constriction rather than relaxation. It is a neurotransmitter and hormone that activates adrenergic receptors in the body, leading to increased heart rate, blood pressure, and bronchodilation.
Sympathetic stimulation of terminal bronchioles causes?
Bronchodilation.
Why Phenylephrine cause mydriasis but not cycloplegia?
Phenylephrine is an alpha one adrenergic receptor agonist. The radial muscles of the iris are innervated by neurons with alpha one receptors thus it causes dilation when stimulated. However the ciliary body of the eye (which controls accommodation) is controlled by muscarinic 3 cholinergic receptors. That pathway for accommodation remains unaffected while the iris is dilated so you will not get cycloplegia.
Activation of which kind of receptor causes heart rate to increase?
beta-one receptor
What is the importance of drug receptor?
The Importance of Drug receptor is when we add Drug + Receptor we form this Pharmaceutical - Response which causes the drug to stay or metabolize in a finite or fix period of time which causes to avoid or lower the adverse effect of the drug. DRUG + RECEPTOR > DRUG - RECEPTOR COMPLEX | PHARMA RESPONSE
What is aminophylline used to treat?
Aminophylline is a bronchodilator. Its most common use is in the treatment of bronchial asthma. Aminophylline causes bronchodilation, diuresis, central nervous system.
Can you ejaculate from anal stimulation?
Yes. The prostate is stimulated which causes ejaculation.
During fight or flight reaction the sympathetic nervous system causes vasodilation in skeletal muscle but vasoconstriction in the skin It is able to achieve these opposite effects because?
the muscle arterioles have α-adrenergic receptors and the skin arterioles have β-adrenergic receptors
What is the g-spot girl?
the g spot is the place when stimulated causes an orgasm.
Effects of drugs on the nervous system?
The effect of the drug ecstasy causes a build up of serotonin at the synapse gap. This is because the ecstasy causes a blockage at the receptor molecules, meaning the synapse chemicals (serotonin), are unable to be 'absorbed' by the receptor molecules.
A muscle is stimulated and exhibits a contraction twitch Before this twitch is over it is stimulated again and a second twitch occurs piggyback on the first one and causes a higher contraction?
summation
What binds to a signal molecule enabling the cell to respond to the signal molecule?
A receptor protein on the cell membrane binds to the signal molecule, initiating a series of intracellular events that lead to a cellular response. The binding of the signal molecule to the receptor triggers a signaling cascade that ultimately activates specific cellular pathways.
