Human Anatomy Quiz

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The heart is enclosed by a sac called the

Pericardium

What are the three layers of pericardium

Fibrous pericardium, parietal layer of serous pericardium and visceral layer of serous pericardium or epicardium

When they contract, blood is propelled out of the heart.

Ventricles

The receiving chambers

Atria Signup and view all the answers

Discharging chambers

Ventricles Signup and view all the answers

forms most of the hearts anterior surface

Right ventricle Signup and view all the answers

carrying blood towards the heart

Veins Signup and view all the answers

carrying blood away from the hearts

Arteries Signup and view all the answers

What are the septum that divides the heart longitudinally?

Interatrial septum and interventricular septum Signup and view all the answers

located between the atria and ventricles on each side.These valves prevent backflow into the atria when ventricles contract

Atrioventricular valves Signup and view all the answers

also called mitral valve, consist of two flaps of cusps, of endocardium.

Biscupid valves Signup and view all the answers

Right AV valve that has three casps

Tricuspid valve Signup and view all the answers

anchors the casps to the wall of the ventricles.

Chordae tendineae Signup and view all the answers

open during heart relaxation and closed when the ventricles are contracting

Atrioventricular valves Signup and view all the answers

closed during heart relaxation and are forced open when the ventricles contract

Semilunar valves or aortic valves or pulmonary semilunar valves Signup and view all the answers

The functional blood supply that oxygenates and nourish the myocardium

Left and right coronary arteries Signup and view all the answers

in which the myocardium is deprived of oxygen resulting crush chest pain.

Angina pectoris Signup and view all the answers

major cause of death from heart attacks in adults

Fibrillation Signup and view all the answers

a rapid, uncoordinated quivering of the ventricles

Fibrillation Signup and view all the answers

How many blood does heart pumps in a single day?

6,000 quarts or 1500 galloons Signup and view all the answers

beats 20-40 times per minute

Ventricular cells Signup and view all the answers

beats 60 times per minute

Atria cells Signup and view all the answers

Inforces a contraction rate of 75 beats per minute on the heart, the beats as a coordinated unit.

Intrinsic conduction system Signup and view all the answers

Called Pacemaker

Sinoatrial node Signup and view all the answers

abnormal or unusual heart sounds Common in young children and some in elder people

Heart murmurs Signup and view all the answers

is the amount of blood pumped out by each side of the heart

Cardiac output Signup and view all the answers