anatomy ch 11
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