What is true about the blood pressure so B. is the right answer because the Artery walls help to maintain the blood pressure , even between the heart beats.
Answer:Cyanosis- bluish color is caused by the tissues having deoxygenated blood
Explanation:Describe the appearance of pallor, erythema, cyanosis, and jaundice in both light-skinned and dark-skinned persons. ... Erythema-redness of the skin is caused from excess blood. Cyanosis- bluish color is caused by the tissues having deoxygenated blood
It would be the study of biology
