Answer:
the selected one is the correct one
Explanation:
The correct option is B
Acetylcholine released into the junction between a motor neuron and a skeletal muscle binds to a sodium/potassium channel and opens it. This is an example of the ligand-gated channel.
The acetylcholine receptors are cation-selective members of the ligand-gated ion channels which are pentameric and also are oligomeric protein assemblies that process to convert a chemical signal through the postsynaptic membrane into an ion flux.
Acetylcholine opens the sodium and potassium channels of a cell which makes the concentrations of these two ions inside and outside stabilize and depolarize the membrane of the cell.
This depolarization will result in the formation of nerve impulses. The receptors in muscle fibers recognize acetylcholine as a sign of muscle contraction from neuron to muscle.
Therefore, acetylcholine receptors are actually pentameric ligand-gated ion channels but muscarinic acetylcholine receptors are coupled membrane proteins of seven helix G-proteins.
Learn to know more about the release of acetylcholine on
brainly.com/question/14202070
#SPJ4
D) use different scientific names for the same organism.
Answer: Organic
Explanation: Organic brain syndrome, is also know as organic brain disease, refers to any syndrome or disorder of metal function whose cause is alleged to be known as orgainc or physiologic rather than purely of the mind.
