The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
omg... that's really hard and i don't know what the answer is.
Explanation:
by the way, thanks for points
Answer: mRNA is made in the nucleus
Explanation:
Neurons and neurotransmitters didn’t see first answer please make Brainlyist have a good day