Which receptors are sensitive to all the different types of stimuli?
Which division uses only acetycholine as the neurotransmitter?
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Which receptors are sensitive to all the different types of stimuli?
a. All receptors are sensitive to all the different types of stimuli.
Which division uses only acetycholine as the neurotransmitter?
c. The sympathetic division uses only acetycholine as the neurotransmitter.
Where are receptors located?
a) most receptors are proteins situated in the cell membrane
Why do neurotransmitters not have a huge distance to travel to reach their target receptor?
Why? The synaptic gap between a nerve and its target cell is very small and so neurotransmitters do not have a huge distance to travel to reach their target receptor.
Why is the binding site of receptors analogous to the active site of enzymes?
Why? The binding site of receptors is analogous to the active site of enzymes. The ligand for the binding site acts as a chemical messenger. It binds and causes an induced fit that results in 'knock on effects' which lead to a message being received in the cell. Most receptors are present in the cell membrane although some are intracellular.
What is the role of acetylcholine in the cholinergic system?
Acetylcholine is a neurotransmitter that activates two types of cholinergic receptor , one of which is an ion channel and the other a G-protein coupled receptor. The other options are hormones that can catalyze various types of tyrosine kinase linked receptors.
Which receptor subtypes are D3 and D5?
a) the dopamine receptor subtypes D3 and D5
Where are ion channel receptors located?
a) Ligand-gated ion channel receptors are present in the cell membrane
Which ion channel is controlled by ligand?
Why? Ligand-gated ion channels are controlled by ligand and not by the membrane potential. Voltage-gated ion channels are controlled by membrane potential.
Which receptors are sensitive to all the different types of stimuli?
a. All receptors are sensitive to all the different types of stimuli.
Which division uses only acetycholine as the neurotransmitter?
c. The sympathetic division uses only acetycholine as the neurotransmitter.
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