When erythrocytes are destroyed, which of the following events occurs?
Type AB blood has both
In the platelet release reaction, ADP and thromboxanes stimulate other platelets to become
activated.
The hematocrit is
...
When erythrocytes are destroyed, which of the following events occurs?
Type AB blood has both
In the platelet release reaction, ADP and thromboxanes stimulate other platelets to become
activated.
The hematocrit is d. the percentage of RBCs in a given volume of blood.
What vitamin is necessary to produce many clotting factors in the liver? Vitamin K
A white blood cell engulfing a bacterium is an example of blood functioning in a. protection.
The oxygenated form of hemoglobin is called oxyhemoglobin
The only formed elements that possess a nucleus when mature are the c. leukocytes
Plasma . is the liquid matrix of the blood.
An increased amount of heparin in the blood might . prevent clotting process.
On which chromosome is there a mutation that leads to sickle cell anemia?b. chromosome 11
Blood consists of a matrix of plasma and cells; blood is a subtype of ______ tissue. e.
connective
The ability of white blood cells to leave the circulation and enter tissues is called b. diapedesis.
The nervous system and certain chemicals can cause the constriction of a blood vessel. This is
known as b. vascular spasm
The cascade of events in the intrinsic pathway can be set into motion when _____ comes into
contact with collagen. factor XII
If a blood buffer is absent, what function of the blood would be compromised? regulation of
pH
What is tissue thromboplastin? A compound released by damaged tissue that initiates the
extrinsic clotting pathway
A deficiency of which of the following stem cells would result in a marked increase in the
clotting time of blood? megakaryoblast
Macrophages are derived from monocytes
Which of the following events is one of the three main stages of coagulation? conversion of
fibrinogen to fibrin
The "pacemaker" of the heart is the SA node
Where is blood moving during the period of ejection? Ventricles to great vessels
The adult heart averages ___________ grams. 250-300
The epicardium covers the surface of the heart.
Energy for contraction of myocardial cells comes primarily from aerobic respiration in the
mitochondria
What event(s) occur during the QRS complex of an ECG? depolarization of the ventricles and
repolarization of the atria
The relationship between preload and stroke volume is known as Starling Law of the heart.
Cardiac muscle cells are maintained by an extensive capillary network.
During the isovolumetric contraction period of the cardiac cycle, AV and semilunar valves are
closed.
Pressure in the right ventricle must exceed pressure in the ____ before the right ventricle can
eject blood. pulmonary trunk
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