Bio669 Quiz 4 UPDATED ACTUAL Exam
Questions and CORRECT Answers
What is the circulation of the right heart? - CORRECT ANSWER - pulmonary circulation-
blood through lungs
what is the circulation of the left heart? - CORRECT ANSWER - systemic circulation-
blood through body
what are the three layers in the pericardium? - CORRECT ANSWER - epicardium
myocardium
endocardium
What is the epicardium? - CORRECT ANSWER - outer layer of the heart
What is the myocardium? - CORRECT ANSWER - cardiac muscle
What is the endocardium? - CORRECT ANSWER - inner lining of the heart
what are the four chambers of the heart? - CORRECT ANSWER - right atrium, right
ventricle, left atrium, left ventricle
What are the atrioventricular valves? - CORRECT ANSWER - tricuspid and bicuspid
valves
What valves have chordae tendinae? - CORRECT ANSWER - tricuspid and bicuspid
(Mitral valve)
,what valves are open for ventricular diastole or relaxation? - CORRECT ANSWER - the
atrioventricular valves -tricuspid and bicuspid valves
what does ventricular diastole allow? - CORRECT ANSWER - allows blood to flow from
the atria into the ventricles
what valves are open for ventricular systole? - CORRECT ANSWER - the semilunar
valves- pulmonary and aortic
what causes ventricular systole? - CORRECT ANSWER - the increased pressure of the
ventricles exceeds the pressure in the atria , blood tried to go back into the atria and this closes
the atrioventricular valves to close, the closing of the atrioventricular valves increases the
pressure of the ventricle even more, exceeding the pressure of the major arteries and forces the
semilunar valves open to allow blood to flow from the ventricles to the major arteries.
What are the semilunar valves? - CORRECT ANSWER - pulmonary and aortic
what valves are on the left side of the heart? - CORRECT ANSWER - mitral valve and
aortic semilunar valve
what valves are on the right side of the heart? - CORRECT ANSWER - Tricuspid valve
and the pulmonic semilunar valve
What are the great vessels? - CORRECT ANSWER - Superior and inferior vena cava;
Right and left pulmonary arteries; Pulmonary veins; Aorta
what are the phases of the cardiac cycle? - CORRECT ANSWER - -diastole: ventricular
filling= pressure of atrial exceeds the pressure of the ventricle= AV opens to fill the ventricle
then close (S1) as the ventricular pressure starts to exceed the atrial.
-Systole: isovolumetric contraction=volume stays the same but contraction is occurring=pressure
is cont. to rise.
, -Systole: ventricular ejection= pressure of ventricles exceeds the pressure of the aorta= AV
opens and blood is ejected out of the ventricle and throughout the body= pressure of ventricle
below the pressure of the artery= Semilunar close (S2)
-Diastole: isovolumetric relaxation= pressure drops but volume stays the same.
What are myocardial cells? - CORRECT ANSWER - nearly identical to skeletal muscle
cells
but are important for cardiac function
What is preload? - CORRECT ANSWER - amount of venous blood returning to the right
atrium= increased pressure= the more force of fill in the ventricle
how much blood is in the ventricle at the end of relaxation (diastole)
What is the Frank-Starling law of the heart? - CORRECT ANSWER - Basically, the more
blood returned to the heart (the more EDV), the more blood will be ejected with each beat, this is
based on the relationship of the stretch of the sarcomeres and the ability of actin and myosin to
form cross-bridges.
increase in preload= increase of ventricular filling= increase of blood pumped out.
What is afterload? - CORRECT ANSWER - force that is needed for the ventricles to
overcome the pressure on the other side of the semilunar valves (arteries).
What is stroke volume? - CORRECT ANSWER - the amount of blood able to be forced
out.
what does myocardial contractility increase based on? - CORRECT ANSWER - increased
preload= increased stroke volume
Questions and CORRECT Answers
What is the circulation of the right heart? - CORRECT ANSWER - pulmonary circulation-
blood through lungs
what is the circulation of the left heart? - CORRECT ANSWER - systemic circulation-
blood through body
what are the three layers in the pericardium? - CORRECT ANSWER - epicardium
myocardium
endocardium
What is the epicardium? - CORRECT ANSWER - outer layer of the heart
What is the myocardium? - CORRECT ANSWER - cardiac muscle
What is the endocardium? - CORRECT ANSWER - inner lining of the heart
what are the four chambers of the heart? - CORRECT ANSWER - right atrium, right
ventricle, left atrium, left ventricle
What are the atrioventricular valves? - CORRECT ANSWER - tricuspid and bicuspid
valves
What valves have chordae tendinae? - CORRECT ANSWER - tricuspid and bicuspid
(Mitral valve)
,what valves are open for ventricular diastole or relaxation? - CORRECT ANSWER - the
atrioventricular valves -tricuspid and bicuspid valves
what does ventricular diastole allow? - CORRECT ANSWER - allows blood to flow from
the atria into the ventricles
what valves are open for ventricular systole? - CORRECT ANSWER - the semilunar
valves- pulmonary and aortic
what causes ventricular systole? - CORRECT ANSWER - the increased pressure of the
ventricles exceeds the pressure in the atria , blood tried to go back into the atria and this closes
the atrioventricular valves to close, the closing of the atrioventricular valves increases the
pressure of the ventricle even more, exceeding the pressure of the major arteries and forces the
semilunar valves open to allow blood to flow from the ventricles to the major arteries.
What are the semilunar valves? - CORRECT ANSWER - pulmonary and aortic
what valves are on the left side of the heart? - CORRECT ANSWER - mitral valve and
aortic semilunar valve
what valves are on the right side of the heart? - CORRECT ANSWER - Tricuspid valve
and the pulmonic semilunar valve
What are the great vessels? - CORRECT ANSWER - Superior and inferior vena cava;
Right and left pulmonary arteries; Pulmonary veins; Aorta
what are the phases of the cardiac cycle? - CORRECT ANSWER - -diastole: ventricular
filling= pressure of atrial exceeds the pressure of the ventricle= AV opens to fill the ventricle
then close (S1) as the ventricular pressure starts to exceed the atrial.
-Systole: isovolumetric contraction=volume stays the same but contraction is occurring=pressure
is cont. to rise.
, -Systole: ventricular ejection= pressure of ventricles exceeds the pressure of the aorta= AV
opens and blood is ejected out of the ventricle and throughout the body= pressure of ventricle
below the pressure of the artery= Semilunar close (S2)
-Diastole: isovolumetric relaxation= pressure drops but volume stays the same.
What are myocardial cells? - CORRECT ANSWER - nearly identical to skeletal muscle
cells
but are important for cardiac function
What is preload? - CORRECT ANSWER - amount of venous blood returning to the right
atrium= increased pressure= the more force of fill in the ventricle
how much blood is in the ventricle at the end of relaxation (diastole)
What is the Frank-Starling law of the heart? - CORRECT ANSWER - Basically, the more
blood returned to the heart (the more EDV), the more blood will be ejected with each beat, this is
based on the relationship of the stretch of the sarcomeres and the ability of actin and myosin to
form cross-bridges.
increase in preload= increase of ventricular filling= increase of blood pumped out.
What is afterload? - CORRECT ANSWER - force that is needed for the ventricles to
overcome the pressure on the other side of the semilunar valves (arteries).
What is stroke volume? - CORRECT ANSWER - the amount of blood able to be forced
out.
what does myocardial contractility increase based on? - CORRECT ANSWER - increased
preload= increased stroke volume
