One of the descriptions below is from the perspective of physiological study, the rest are from an anatomical perspective. Select the description below that comes from physiological perspective. a. The chambers of the heart and blood vessels leading to and from the heart are separated by valves composed of fibrous connective tissue.
b. The skul is formed by 22 facial and cranial bones.
c. The pancreas lies deep to the stomach within the abdominal cavity.
d. The contraction of smooth muscle in blood vessels (vasoconstriction) can reduce the flow of blood through the vessel.