The boy’s father who did not live with their mother did not want children to live with him.

The chambers of the heart expand or dilate during which phase of the cardiac cycle?

The formula of Coca-Cola is a secret that is carefully guarded.

As the ranger was issuing us a permit, he warned us about bears.

The aorta begins at the

The ______ of the heart is said to be the beginning of the pulmonary circulation, and the _______ of the heart is the end of pulmonary circulation.

Which orifice of the heart transports oxygenated blood?

Which vessel exits the right ventricle of the heart?

Identify the circuit that pumps blood from the heart to the lungs, and back to the heart.

The ______ of the heart is said to be the beginning of the pulmonary circulation, and the _______ of the heart is the end of systemic circulation.