Cardiovascular System

The right atrium receives deoxygenated blood from systemic veins

right atrium

The systemic vessels carry blood from the left ventricle to the tissues in all parts of the body and then returns the blood to the _______________.

right atrium

The valves between the atria and ventricles are called atrioventricular valves (also called cuspid valves), while those at the bases of the large vessels leaving the ventricles are called semilunar valves.

The right atrioventricular valve is the tricuspid valve. The left atrioventricular valve is the bicuspid, or mitral, valve. The valve between the right ventricle and pulmonary trunk is the pulmonary semilunar valve. The valve between the left ventricle and the aorta is the aortic semilunar valve.

The cardiovascular system consists of the heart, which is a muscular pumping device, and a closed system of vessels called...

arteries, veins, and capillaries.

Two types of valves of the heart are the

atrioventricular valves and semilunar valves.

The vital role of the cardiovascular system in maintaining homeostasis depends on the continuous and controlled movement of blood through the thousands of miles of ___________ that permeate every tissue and reach every cell in the body.

capillaries

The visceral layer of the serous membrane forms the epicardium.

epicardium

Three layers of the heart are:

epicardium, the myocardium, and the endocardium.

Three layers of tissue form the heart wall. The outer layer of the heart wall is the epicardium, the middle layer is the myocardium, and the inner layer is the endocardium.

layers of the heart

The pulmonary vessels transport blood from the right ventricle to the lungs and back to the ______________.

left atrium

the left atrium receives oxygenated blood from the pulmonary veins.

left atrium

Blood flows from the right atrium to the right ventricle and then is pumped to the lungs to receive __________. From the lungs, the blood flows to the left atrium, then to the left ventricle. From there it is pumped to the _____________.

oxygen systemic circulation

The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serous membrane.

pericardial sac

The two atria are thin-walled chambers that receive blood from the veins.

right atrium and left atrium

The four chambers of the heart are:

the right atrium, the right ventricle, the left atrium, and the left ventricle.

The heart is a muscular pump that provides the force necessary to circulate the blood to all the _____________ in the body.

tissues

The internal cavity of the heart is divided into four chambers: Right atrium Right ventricle Left atrium Left ventricle

four chambers

The two ventricles are thick-walled chambers that forcefully pump blood out of the heart

right ventricle and left ventricle

both atria and ventricles contract at the same time. The heart works as two pumps, one on the right and one on the left, working simultaneously. Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle. From there it is pumped to the systemic circulation.

systemic circulation