MPP Prelab 9 Final Exam Study Test.
The valves have to contract to open or relax to close. - CORRECT ANSWER Select the FALSE statement regarding valves in the heart.
true - CORRECT ANSWER The left ventricle must generate more pressure than the right ventricle because the left ventricle is r...
The valves have to contract to open or relax to close. - CORRECT ANSWER Select the FALSE statement
regarding valves in the heart.
true - CORRECT ANSWER The left ventricle must generate more pressure than the right ventricle
because the left ventricle is required to drive blood throughout the body and the right ventricle just
drives blood to the lungs (which are very near the heart).
systole; diastole - CORRECT ANSWER For blood to flow there must be 2 things, a pressure gradient and a
pathway.
The pressure gradient is caused by contraction of the heart. The term for this is ______
The term for when the heart is not contracting is ______
Filling occurs when the ventricle is relaxed
In isovolumetric contraction the ventricle is contracting but all valves are closed
When all valves are closed blood cannot flow
Valves in the heart open only one-way
When the ventricular muscle cells depolarize this leads to contraction.
Since the ventricular myocytes are connected by gap junctions, they contract as a unit and this
generates pressure on the blood. - CORRECT ANSWER Select all that are true:
Epinephrine and norepinephrine: increased heart rate and strength of contraction - CORRECT ANSWER
Select the pair that is an appropriate match.
1) As blood returns from the lungs it flows into the left atria, through the AV valve, into the ventricle
2) The atria cells depolarize and contract to squeeze the last bit of blood out to the ventricle
3) The ventricular cells depolarize and begin to contract
4) As pressure begins to rise in the ventricle, pressure goes above atrial pressure, which closes the AV
valve
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