The all-or-none principle states that Select one: a. all stimuli great enough to bring the membrane to threshold will produce identical action potentials. b. all stimuli will produce identical action potentials. c. the greater the magnitude of the stimuli, the greater the magnitude of the action potential

use smarts app it gives all theanswers

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.