Fill in the Blanks 320-testOnline version 320-test by Farhad Key 1 passes as signal other storage result membrane Chemistry is an extremely important topic in physiology . Most physiological processes occur as the of chemical changes that occur within the body . These changes include the influx / efflux of ions across a neuron's , causing a to pass from one end to the . Other examples include the of oxygen in the blood by a protein it through the lungs for usage throughout the body .