Ch5

heart, blood vessels, and blood

blood vessels

hollow, musclar organ located between the lungs. pump that furnishes the power to maintain the blood flow needed throughout the entire body.

the lower end of the heart

pericardial sac, double walled membranous sac that encloses the heart

tough outer layer that forms a fibrous sac that surrounds and protects the heart

inner layer of the pericardium, also the outer layer of the heart.

found between the two pericardium layers, where it acts as a lubricant to prevent friction when the heart beats

external layer of the heart and the inner layer of the pericardium

myocardial muscle, middle and thickets of the heart's 3 layers and consists of specialized cardiac muscle tissue

consists of epithelial tissure, the inner lining of the heart

supply oxygen rich blood to the myocardium

2 upper chambers of the heart. Receiving blood, all blood vessels coming to the heart enter here

separates the atria

2 lower chambers of the heart. Pumping chambers, all blood vessels leaving the heart emerge from the ventricles

controls the opening between the right atrium and the right ventricle

having 3 cusps (points) This is the shape of the tricuspid valve

located between the right ventricle and the pumonary artery

bicuspid valve, located between the left atrium and left ventricle

located between the left ventricle and the aorta

right atrium->right ventricle ->left atrium->left ventricle->oxygen poor blood is returned by the venae cavae to the right atrium and the cycle continues

flow of blood only between the heart and lungs

carries deoxygenated blood out of the right ventricle and into the lungs

carry the oxygenated blood from the lungs into the left atrium of the heart