Answer:
What sends oxygenated blood back to the heart from the lungs?
Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.
Explanation:
Answer:
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Answer:
C) the phrenic nerve that serves the diaphragm receives its fibers from here
Explanation:
C. mRNA detaches and moves to the ribosomes.