Anatomy Ch. 11 Cardiovascular Multiple Choice
aorta
blood leaves the left ventricle through an artery known as the ________.
venules
capillary beds are drained by vessels known as _______.
ventricles
during mid-to-late diastole, blood flows from the atria to the ________.
(T/F) blood is returned to the right side of the heart from the lungs
false
(T/F) the alternate name for the tricuspid valve is the mitral valve
false
(T/F) the aorta is the largest artery in the pulmonary circulation
false
(T/F) the inferior valve cava returns blood to the heart from all body regions above the diaphragm
false
the middle coat is relatively thin
how does the wall of a vein differ when compared to an artery:
pulmonary trunk and aorta
into which one of the following vessels does blood enter during ventricular systole
valves
large veins have _______ to prevent the backflow of blood.
coronary arteries
oxygenated blood nourishing the myocardium comes from vessels that branch off the aorta called ________.
blood poor in oxygen
pulmonary arteries transport ________.
three cusps and opens when the left ventricle contracts
the aortic semilunar valve is composed of:
neck
the carotid artery is located in the:
coronary sinus
the coronary veins empty blood from the myocardium into a large vein on the posterior side of the heart known as the ______.
atrioventricular
the first heart sound, "lub" is caused by the closure of the ______ valves.
peripheral resistance
the friction blood encounters as it flows through the vessels is called:
closure of the heart valves
the heart sounds "lub" and "dup" results from _______.
pulmonary veins
the left atrium receives blood from the ______.
great saphenous veins
the longest veins in the body drain the leg and are the __________.
when the ventricle is in systole
the mitral valve is normally closed
interventricular septum
the partition where the bundle branches are located is called the _______.
arteries, arterioles, capillary beds, venules, veins
the path of blood flow within the systemic vascular system is:
apex
the pointed, inferior portion of the heart, known as the ________, rests on the diaphragm and is oriented toward the left hip
tricuspid valve
the right AV valve is known as the:
inferior vena cava
the right and left renal veins empty blood into the:
right atrium
the sinoartrial node is located in the:
deoxygenated blood into the right atrium
the superior vena cava empties
systole
the term that means heart contraction is _______.
myocardium
the thick layer of the heart wall that contains contractile cardiac muscle tissue is the
pulmonary
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.
atria; ventricles
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 ___________.
epicardium
the visceral layer of the serous pericardium is actually the same layer as the ________.
left ventricle
the walls of the _______ are substantially thicker because that chamber acts as the more powerful systemic pump of the heart.
(T/F) arteries always carry blood away from the heart
true
(T/F) systolic pressure is the blood pressure in the arteries at the peak of ventricular contraction
true
(T/F) the atrioventricular valves prevent the back flow of blood into the atria when the ventricles are contracting
true
(T/F) the chordae tendineae anchor the atrioventricular valves to the walls of the ventricles
true
(T/F) the pacemaker of the heart is called the sinoatrial (SA) node
true
media
tunica _______ the middle layer of a typical blood vessel, contains smooth muscle and elastic fibers.
incompetent venous valves
varicose veins are caused by:
superior vena cava
veins draining the head and arms empty into the ________, which carries blood to the right atrium of the heart.
often have valves to prevent the backflow of blood
veins:
interatrial septum
what structure divides the left atrium from the right atrium?
interventricular septum
what structure divides the left ventricle from the right ventricle:
contract
when ventricles _______, the AV valves are closed.
right atrium
which area of the heart receives blood from the systemic veins:
both the right and left coronary arteries
which of the following blood vessels is a direct branch of the ascending aorta:
heart is realaxed
which of these events is NOT associated with ventricular systole?
tunica externa, tunica media, tunica interna
which one is the correct sequence going from the outermost to the innermost layer of a blood vessel wall:
pulmonary vein
which one of the following blood vessels carries oxygenated blood
aortic semilunar valve
which valve guards the base of the aorta and opens when the ventricular are contracting?
pulmonary
arteries are normally depicted as red while veins are colored blue. the exceptions to this rule are the _________ arteries and veins.
tachycardia
a heart rate of over 100 beats per minute is called:
bradycardia
a heart rate that is substantially slower than normal (less than 60 beats per minute) is called
