The Release of Neurotransmitter from Axon Terminals into the Synaptic

question 82

Multiple Choice

The release of neurotransmitter from axon terminals into the synaptic cleft depends on:

• A)The inflow of chloride ions
• B)The opening of nodes of Ranvier
• C)Reversal of the sodium-potassium pump
• D)The entry of calcium ions from the extracellular fluid

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Definitions:

Pectinate Muscles

Internal ridges of myocardium in the atria of the heart.

Visceral Pericardium

The inner layer of the pericardium that closely envelopes the heart.

Epicardium

The outermost layer of the heart wall, also known as visceral pericardium, which provides lubrication and protection to the heart.

Endocardium

The innermost layer of tissue that lines the chambers and valves of the heart, providing protection and contributing to heart function.