anatomy ch 11

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What blood vessel do you palpate when checking the pulse in your neck?

common carotid artery

Which of the following supply the myocardium with oxygen-rich blood?

coronary arteries

Blood leaves the left ventricle through an artery known as the ________.

aorta

Which valve is closed during heart relaxation to prevent blood from backflowing from the aorta into the heart?

aortic semilunar valve

What large blood vessels carry blood away from the heart?

arteries

Which type of vessel has a thick tunica media?

artery

The atrioventricular valves are closed when ________.

atrial pressure is less than ventricular pressure

What part of the heart's intrinsic conduction system carries impulses into the interventricular septum?

atrioventricular (AV) bundle

What are the tiny white cords that anchor the cusps or flaps of endocardium to the walls of the ventricles?

chordae tendineae

A blood pressure reading of 120/80 mm Hg is written with diastolic pressure over systolic pressure. (t/f )

false

Blood is returned to the right side of the heart from the lungs. (t/f)

false

What is the function of the heart valves?

prevents backflow of blood

Arteries are normally depicted as red while veins are colored blue due to the oxygenation of the blood being transported by each type of vessel. The exceptions to this rule are the ________ arteries and veins.

pulmonary

Which one of the following blood vessels carries oxygenated blood?

pulmonary vein

Which vessels return oxygenated blood to the left atrium of the heart?

pulmonary veins

The tricuspid valve is located between the ________.

right atrium and right ventricle

Which valve is located between the right atrium and right ventricle?

tricuspid valve

The average heart beats approximately 75 times each minute at rest.(t/f)

true

The sinoatrial (SA) node is the pacemaker of the intrinsic conduction system of the heart.(t/f)

true

Which of these is found in capillary walls?

tunica intima

Which of the following vessels has the lowest blood pressure?

venae cavae

Hypotension is diastolic blood pressure below 100 mm Hg. (t/f)

false

The two superior receiving chambers of the heart are known as the ________, while the two inferior discharging chambers of the heart are known as the ________.

atria; ventricles Submit

Pulmonary arteries transport ________.

blood rich in carbon dioxide to the lungs Submit

The heart sounds, "lub" and "dup," occur when the atria contract and subsequently when the ventricles contract. (t/f)

false

What structure divides the left ventricle from the right ventricle?

interventricular septum

The transportation of blood from the right side of the heart to the lungs and back to the left side of the heart is known as ________ circulation.

pulmonary

During ventricular systole, blood is ejected from the ventricles through the large arteries connected to the heart.(t/f)

true

Capillaries are composed only of tunica intima. (t/f)

ture

Large veins have ________ to prevent the backflow of blood.

valves

Oxygented blood nourishing the myocardium comes from vessels that branch off the aorta called ________.

coronary arteries

Cardiac output is the product of which two variables?

heart rate and stroke volume

What chamber of the heart will blood enter after passing through the bicuspid valve?

left ventricle

Which of the following is often called the pacemaker of the heart?

sinoatrial (SA) node Submit

What term refers to the contraction of the heart?

systole

Which term means heart contraction?

systole

What drains capillary beds?

venules

The mitral valve is normally closed ________.

when the ventricle is in systole

Through which valve will blood flow when leaving the right atrium

tricuspid valve Submit


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