The diaphragm contracts and the thoracic cavity increases in volume. It decreases the intraalveolar pressure so that air flows into the lungs.
Receptor potential is generally at the receiving region. The receptor potential(also called generator potential) can work to trigger an action potential either within the same neuron or adjacent cell.Within the same neuron the receptor potential causes local current flow to the region responsible for action potential.
Answer:
(a) Muscle B contracts and muscle A relaxes
(b) The Heart
Answer:
<h3>B. </h3>
Explanation:
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The answer is C, mutualism