medical anatomy unit 11 test- cardiovascular system
a person needs to know how well their heart is working. They are given the equation CO = HR x SV. They receive some data that their EDV was 100 ml and their ESV is 15 ml, and their current HR is 78 BPM. What is their CO?
6.630 ml/min
Which of the following shows the Cardiac Cycle in order from start to finish (As discussed in class)
EDV, Ventricular Systole, Relaxation Period, ESV, Ventricular Filling
peripheral resistance is increased by
a decrease in blood volume
which one of the following is caused by a decrease in venous return to the heart
a decrease in stroke volume and cardiac output
what is TPR?
a rate of Blood Flow measurements
The path of blood flow within the systemic vascular system is
arteries, arterioles, capillary beds, venules, veins
A heart rate that is substantially slower than normal (less than 60 beats per minute) is called
bradycardia
the superior vena cava empties
deoxygenated blood into the right atrium
Cardiac muscle is enclosed by a double sac of serous membrane known as the peritoneum.
false
Cardiac output is calculated by multiplying the stroke volume times the systolic blood pressure.
false
Diastolic blood pressure is the pressure in the arteries at the peak of ventricular contraction
false
During ventricular diastole, the bicuspid and tricuspid valves are closed.
false
The P wave is the first wave on a normal electrocardiogram tracing and signals the repolarization of the atria.
false
The aorta is the largest artery within the pulmonary circulation.
false
The coronary sinus on the backside of the heart drains deoxygenated blood from the wall of the heart into the left atrium
false
vasoconstriction during exercise occurs in which location
intestines
Which one of the following areas receives blood directly from the four pulmonary veins
left atrium
When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the
left ventricle to the left atrium
The atria of the heart are the chambers that are
located superiorly and are the receiving chambers of the heart
the umbilical vein carries
metabolic waste and carbon dioxide from the placenta to the fetus
The thick layer of the heart wall that contains contractile cardiac muscle tissue is the
myocardium
the carotid artery is located in the
neck
the right and left internal iliac artery's empty blood into the
pelvic organs
Which one of the following blood vessels is NOT part of the systemic circulation
pulmonary arteries
which one of the following vessels recieves blood during right ventriclar systole
pulmonary trunk
Which one of the following blood vessels carries oxygenated blood
pulmonary vein
which one of the following areas is NOT a pressure point
renal artery
the tricupsid valveis located between the
right atrium and right ventricle
Which one of the following does NOT receive blood directly from the aortic arch
right common carotid artery
Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart
sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers
The crescent-shaped pacemaker of the heart that initiates depolarization under normal conditions is the
sinoatrial (sa) node
The volume of blood pumped out by each ventricle with each beat of the heart is called the
stroke volume
Which one of the following is true concerning the lub-dup sounds of the heart
the first sound is longer and louder and is caused by closure of the AV valves; the second sound is shorter and sharper and is caused by closure of the semilunar valves
How does the wall of a vein differ when compared to an artery
the middle coat is relatively thin
The aortic semilunar valve is composed of
three cusps and opens when the left ventricle contracts
An increase in blood vessel diameter causes arterial blood pressure to decrease
true
Arteries always carry blood away from the heart.
true
Reductions in venous return causes reductions in both stroke volume and cardiac output.
true
Systole means contraction of the ventricles.
true
The pacemaker of the heart under normal circumstances is called the sinoatrial (SA) node.
true
The part of the intrinsic conduction system of the heart that directly supplies the walls of the ventricles is the Purkinje fibers.
true
The pulmonary arteries carry deoxygenated blood to the lungs.
true
Which one is the correct sequence going from the most superficial to deepest layer of a blood vessel wall
tunica externa, tunica media, tunica intima
in which one of the following blood vessels is blood pressure the highest
veins
the mitral valve is normally closed
when the ventricle is in systole