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Systemic circuit

carries blood to the body from the heart

Pulmonary circuit

carries blood to the lungs from the heart


blood vessels that carry blood away from the heart


blood vessels found between small arteries and small veins

sternum, left

The heart is located posterior to the _______ and _______ of the midline


the top of the heart


inferior pointed tip of the heart

Pericardial cavity

contains the air space and fluid that reduces the friction between the surfaces of the heart as it beats


the lining of the cavity that contains the heart

visceral pericardium

corresponds to the inner wall of the pericaridal sac

parietal pericardium

corresponds to the outer wall of the sac


covers the outer surface of the heart


muscular wall of the heart that contains muscle tissue, blood vessels and nerves


inner surface of the heart that includes the heart valves

tricuspid valve

valve found between the right atrium and right ventricle

pulmonary semilunar valve

valve that consists of three moon shaped flaps that assist blood flow from the right ventricle to the pulmonary trunk

chordae tendinae

connective tissue that attach to each cuspid, assists the valves closing during contraction

papillary muscles

conical muscular structure that holds the chordae tendinae in place

forman ovale

depression found between the atriums, remnant of the hole in the heart of the embryo that closes 2 days after birth

pectinate muscles

muscular ridges in the inner surfaces of the right atrium

trabeculae carnea

muscular ridges in the inner surfaces of the ventricles

superior vena cava

vein that delivers blood to the right atrium from the upper body

inferior vena cava

vein that delivers blood to the right atrium from the lower body

interatrial septum

wall that separates the two atriums

interventricular septum

wall that separates the two ventricles

Coronary sinus

vein that empties into the right atrium that carries deoxygenated blood from the heart


carry blood to the heart

Atrioventricular valves

tricuspid and bicuspid

Pulmonary artery

carries blood to the lungs

aortic semilunar valve

allows blood to pass through to the ascending aorta

ascending aorta

blood is delivered to from the left ventricle

aortic arch

delivers blood from the ascending aorta to the descending aorta

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