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Nerve impulses are electrical impulses that travel along the axons of nerve cells (neurons) carrying various information. Propagation of electricity is possible due to differences in <...

At rest, the potential difference between the inside and outside of the neuron is around -70mV. The sodium potassium pump is continually pumping 3 Na+ ions out for every 2 K+ ions it pumps in, and this ma...

Diffusion is described as the movement of molecules from a high concentration to a low concentration, through a concentration gradient until evenly spread out 

The four chambers include the right and left atrium and the right and left ventricle 

Osmosis can be described as the movement of water from a high concentrated area to a low concentrated area, through a selectively permeable membrane