Which statement about the connection between subcellular and extracellular components is the most correct? A. Gap junctions are necessary for communication and growing embryos and tissues, such as heart muscle. B. Desmosomes are necessary for communication and tissues, such as muscle cells. C. Tight junctions are bound together by specific keratin proteins. D. Plasmadesmata are typically found interspersed within the cell walls of many types of bacteria.

the answer is b)3/8x+1

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.

the correct answer is 2 and 4