from the release of acetylcholine from a neuron to receptor resensitization: -excited presynaptic neuron releases acetylcholine -acetylcholine diffuses across synaptic cleft or neuromuscular junction -acetylcholine is released from the binding sites -two acetylcholine bind to a receptor; the gate opens -small cations pass through the open pore of the receptor -the plasma membrane of the target cell is depolarized -two acetylcholine are tightly bound to a receptor; the gate is closed -one acetylcholine binds to a receptor; the gate is closed.
The neurotransmitter acetylcholine is released from presynaptic neurons in response to a nerve impulse and diffuses across the È synaptic cleft, or neuromuscular junction, to a receptor on another neuron or a muscle cell. The nicotinic acetylcholine receptor is a pentamer containing four types of subunits, azßys. Place the events in the correct order, from the release of acetylcholine from a neuron to receptor resensitization:
-excited presynaptic neuron releases acetylcholine
-acetylcholine diffuses across synaptic cleft or neuromuscular junction
-acetylcholine is released from the binding sites
-two acetylcholine bind to a receptor; the gate opens
-small cations pass through the open pore of the receptor
-the plasma membrane of the target cell is depolarized
-two acetylcholine are tightly bound to a receptor; the gate is closed
-one acetylcholine binds to a receptor; the gate is closed.
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