The nervous system is composed of excitable nerve cells (neurons) and synapses that type between the neurons and connect them to centers throughout the body or to other neurons.
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This can be detected by an electrocardiogram which measures the waves of excitation passing via the guts and plotting a graph of potential distinction (voltage) against time.
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Gustation and olfaction are chemical senses as a result of the receptors they include are sensitive to the molecules in the meals we eat, along with the air we breathe.
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Assuming the airway is open, air from the exterior setting then follows its pressure gradient down and expands the alveoli of the lungs, where gas exchange with the blood takes place.
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Contrary to standard perception, clotting of a lower on the skin will not be initiated by air or drying out, however by platelets adhering to and activated by collagen in the blood vessels endothelium.
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