Anatomy of the Heart

Chapter 11

Arteriole

Arteriole

a small artery

Artery

largest type of blood vessel; carries blood away from the heart to all parts of the body

Atrioventricular node

specialized tissue in the wall between atria; electrical impulses pass from pacemaker through ____ and bundle of His of toward ventricles

Atrium

one of two upper chambers of the heart

Capillary

smallest blood vessel

Coronary arteries

blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle

Aorta

largest artery in the body

Endocardium

inner lining of the heart

Mitral valve

valve between the left atrium and left ventricle; bicuspid valve

Myocardium

muscular, middle layer of the heart

Pericardium

double-layered membrane surrounding the heart

Pulmonary artery

artery carrying oxygen-poor blood from the heart to the lungs

Pulmonary valve

valve positioned between the right ventricle and the pulmonary artery

Pulmonary vein

carries oxygenated blood from the lungs to the left atrium of the heart

Sinoatrial node

the pacemaker of the heart

Tricuspid valve

located between the right atrium and right ventricle; has three leaflets or cusps

Valve

a structure in veins or in the heart that temporarily closes an opening so blood flows in only one direction

Vein

a thin-walled vessel that carries blood from body tissues and lungs back to the heart; contains valves to prevent the backflow of blood

Vena cava

the largest vein in the body; superior and inferior ____ return blood to the right atrium of heart

Ventricle

one of two lower chambers of the heart

Venule

a small vein

Aortic valve

between left ventricle and aorta

apex

lower tip of the heart