final exam 14-24 Flashcards
what are the two parts of whole blood?
formed elements and plasma.
which is the correct order of stage occurring during hemostasis?
vascular spasm, platelet plug formation. blood coagulation.
what is hematocrit?
percentage of erythrocytes.
the purpose of a differential blood count is.
to determine the number percentage of the 5 different types of leukocytes.
which leukocyte is most abundant, a first responder, and a strong phagocyte that dies about 20-30 minutes after reaching a trauma area.
neutrophil
what are the functions of blood?
- to transport nutrients waste.
- to defend against disease.
- to transport hormones.
which plasma protein is changed form an inactive soluble from to an insoluble sticky from by thrombin in the 3rd phase of hemostasis?
fibrinogen.
what is the average life span of a red blood cell?
120 days.
which blood type is the universal donor blood?
0-.
which of the following is a part of blood plasma?
albumins.
which of the answers are produced from the breakdown of hemoglobin?
- biliverdin
- bilirubin
where are most plasma proteins made?
liver.
what are the 3 groups of plasma proteins?
- globulins
- albumins
- fibrogen
what condition causes the release of erythropoietin from the kidneys?
low tissues oxygen concentrations.
which of the following are parts of the conductance system of the heart?
- SA node
- Purkinje fibers
- AV bundle (bundle of his)
the primary pacemaker of the heart is?
the sinoatrial node.
the functions of the heart include?
1.pump blood through the systemic circuit.
2. pump blood through the pulmonary circuit.
a heart murmur may be caused by?
- incomplete closure of the valves.
- a hole in either one or both interatrial or interventricular septum.
the mas of cardiac muscle cells that act together too contract at the same time is called a?
syncytium.
what two occur during the QRS complex of an electrocardiogram?
ventricular depolarization and atrial repolarization.
blood pressure is defined as?
the forces exerted by blood against the inner walls of blood vessels.
which are organs of the cardiovascular system?
- heart
- blood vessels
how many chambers does a human heart have?
4.
the main blood vessels that supply oxygen rich oxygenated blood to the hearts cells (not to a chamber) are known as?
the coronary arteries.