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The layer of the heart wall synonymous with the visceral layer of the serous pericardium is the


Pulmonary circulation involves blood flow to and from the heart and the


pulmonary veins:

transport oxygenated blood to the heart

What structure divides the left from the right ventricle?

interventricular septum

When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the

left ventricle to the left atrium

Deoxygenated blood is returned to the right side of the heart by the

superior and inferior vena cavae

The path of blood flow within the systematic vascular system is:

arteries, arterioles, capillary beds, venules, veins


often have valves to prevent the backflow of blood

Which one is the correct sequence going from outermost to the innermost layer of a blood vessel wall:

tunica externa, tunica media, tunica intima

Which of the following arteries supplies the first half of the large intestine?

superior mesenteric artery

The external carotid artery serves the skin and muscles of the head and


the right and left renal veins empty blood from the


Which of the following increases heart rate?


True or false: The semilunar valves prevent the backflow of blood into the atria when the ventricles are contracting


True or false: Hypotension is systolic blood pressure above 150 mm Hg.


True or false: Blood drained from the heart after cardiac circulation returns to the left atrium of the heart.


True or false: Exchanges between blood and tissue cells occur in capillary beds.


These vessels carry blood away from the heart


These vessels return blood to the heart


Superior and inferior vena cava are classified as these types of vessels


The aorta is classified as one of these vessels


Blood pressure in these vessels is low


The heart is situated within the medial portion of the thoracic cavity, an indentation known as the


Blood nourishing the myocardium with oxygenated blood comes from vessels that branch off the aorta called

coronary arteries

The electrocardiogram (ECG) wave that results from depolarization of the atria is the

P Wave

The term that means heart contraction is


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