MUSCLE PHYSIOLOGY

PHYSIOLOGY

MUSCLE CONTRACTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does the neurotransmitter do?
A
Stimulates the muscle cell
B
Inhibits the muscle cell from contracting
C
Inhibits or stimulates depending on the type of chemical
D
Stimulates the release of calcium
Explanation: 

Detailed explanation-1: -Inhibitory neurotransmitters block or prevent the chemical message from being passed along any farther. Gamma-aminobutyric acid (GABA), glycine and serotonin are examples of inhibitory neurotransmitters. Modulatory. Modulatory neurotransmitters influence the effects of other chemical messengers.

Detailed explanation-2: -If a neurotransmitter stimulates the target cell to an action, then it is an excitatory neurotransmitter acting in an excitatory synapse. On the other hand, if it inhibits the target cell, it is an inhibitory neurotransmitter acting in an inhibitory synapse.

Detailed explanation-3: -Neurotransmitters have different types of actions: Excitatory neurotransmitters encourage a target cell to take action. Inhibitory neurotransmitters decrease the chances of the target cell taking action. In some cases, these neurotransmitters have a relaxation-like effect.

Detailed explanation-4: -Some neurotransmitters, such as acetylcholine and dopamine, can create both excitatory and inhibitory effects depending upon the type of receptors that are present.

Detailed explanation-5: -Whether a neurotransmitter is excitatory or inhibitory depends on the receptor it binds to. Neuromodulators are a bit different, as they are not restricted to the synaptic cleft between two neurons, and so can affect large numbers of neurons at once.

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