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