Row 1
Which part of the cardiac conduction system is known as the pacemaker of the heart?
SA node
The upper chambers of the heart are called ___
atria
In the clinical setting, blood pressure refers to _______.
Arterial pressure
Approximately how long do red blood cells live?
120 days
Which membrane covers the heart?
The pericardium
The thickest layer of the heart, which is made up of muscle?
Myocardium
What is the responsibility of blood platelets?
clotting
Capillaries connect
Venules and arterioles
Which valve is between the left atrium and left ventricle?
Bicuspid valve
If an embolus lodges in a coronary artery, it may cause ____.
Myocardial infarction
Free points
75 points
The ____ valve is between the right ventricle and the pulmonary trunk.
Pulmonary semilunar valve
Why is an embolus is dangerous?
It can eventually become lodged in a small artery in the lungs or heart.
The medulla oblongata is located in the
Cardiac control center
The ____ valve prevents blood from flowing back into the left ventricle.
Aortic semilunar valve
What is the function of the bicuspid and tricuspid heart valves?
They prevent blood from flowing from ventricles to atria.
Which of the following individuals is most at risk for erythroblastosis fetalis?
The second Rh-positive fetus born to an Rh-negative mother
Which component of the cardiac conduction system is located between the ventricles and splits into left and right branches?
The Bundle of His
What is the normal WBC count?
5,000 to 10,000
People with type AB are _____________
Universal recipients
The most likely result of agglutination following a blood transfusion is ____.
Severe anemia
Eosinophils are WBC's that can control which type of infection?
Parasitic infections
Free points
100 points
Why should a woman know her Rh type?
Because if she is Rh-negative and conceives a child that is Rh-positive, her second baby will have erythroblastosis fetalis.
The production of RBCs in the blood is controlled by which hormone?
Erythropoietin