It includes all the blood except the red blood cells

25 Jun It includes all the blood except the red blood cells

Question
1 of 25

Which of the following is characteristic ofall leukocytes?
They are nucleated.
They have cytoplasmic granules.
They are phagocytic.
They are the most numerous of the formed elements.
They are essential for clot formation.

Question
2 of 25

Which of the following accurately describes plasma?
It includes all the blood except the red blood cells.
It makes up 30% of whole blood.
It is the liquid portion of blood that includes the clotting factors.
It is the liquid portion of blood including the formed elements.
It contains the blood antigens that determine blood type.

Question
3 of 25

Which of the following is the correct statement regarding blood cell formation?
The main sites of blood cell production in adults are the spleen and liver.
Before the seventh month of fetal development, yellow marrow is the main site of cell formation.
Red marrow is the main site of blood cell formation throughout adult life.
Yellow marrow is the main site of leukocyte formation.
The lymph nodes and thymus are the site of all white blood cell formation.

Question
4 of 25

What organ in the body regulates erythrocyte production?
Kidney
Liver
Brain
Pancreas
Spleen

Question
5 of 25

Which of the following may trigger erythropoiesis?
Increased tissue demand for oxygen
Decreased tissue demand for oxygen
Increased number of RBCs
Moving from high to low altitude
Increased body temperature

Question
6 of 25

Why is the birth of an Rh positive baby to an Rh negative mother a potential health problem?
The Rh negative mother will form antibodies that may affect that baby.
The Rh negative mother will form antibodies that may affect a second Rh positive baby.
The Rh negative mother will form antibodies that may affect a second Rh negative baby.
The Rh negative mother will form antigens that will attack the red blood cells of that baby.
The Rh negative mother will form antigens that will attack the red blood cells of a second negative baby.

Question
7 of 25

Type O blood is considered the universal donor for which of the following reasons?
Type O blood is the least common blood type.
Type O blood contains no antigens and cannot cause a transfusion reaction.
Type O blood contains no antibodies and cannot cause a transfusion reaction.
Type O blood is more stable in storage.
Type O blood contains both A and B antigens.

Question
8 of 25

What is a transfusion reaction?
Chills due to the donor blood being colder than normal body temperature
Kidney shut down due to too much blood being infused at once
RBCs lyse and hemoglobin levels increase in the blood stream
Dehydration due to incompatible blood
Antibodies clog the tubules of the kidney resulting in pain

Question
9 of 25

What is anemia?
When a body experiences lack of oxygen due to high elevation.
When a body has too many red blood cells.
When a body has poor oxygenation of blood.
When a body has an abnormal number of white blood cells.
When a body experiences respiratory distress.

Question
10 of 25

Small purplish spots, called petechiae, indicate which disorder?
Anemia
Hemophilia
Physiological jaundice
Thrombocytopenia
Thrombus

Question
11 of 25

Which of the following describes leukemia?
The number of WBCs and RBCs is decreased but all function normally.
The number of WBCs and RBCs is abnormally high but all function normally.
The number of WBCs is abnormally high, and number of RBCs is abnormally low.
The number of WBCs is abnormally high, but the number of RBCs is normal.
The number of WBCs and platelets is abnormally high.

Question
12 of 25

What is the major function of the cardiovascular system?
Communication
Energy production
Movement
Support and protection
Transport

Question
13 of 25

What is the middle layer of the heart wall called?
Endocardium
Pericardium
Myocardium
Epicardium
Mediastinum

Question
14 of 25

Which statement best describes arteries?
All carry oxygenated blood to the heart.
All carry blood away from the heart.
All carry blood toward the heart.
Only large arteries are lined with endothelium.
Only the pulmonary artery carries oxygenated blood.

Question
15 of 25

What vessel has the primary function of permitting the exchange of nutrients and gases between the blood and tissue cells?
Arterioles
Arteries
Veins
Venules
Capillaries

Question
16 of 25

Which of the following are involved directly in pulmonary circulation?
Superior vena cavae, right atrium and left ventricle
Right ventricle, pulmonary artery, and left atrium
Left ventricle, aorta, and inferior vena cava
Right atrium, aorta and left ventricle
Left atrium, aorta, superior vena cavae

Question
17 of 25

Which of the following describes the semilunar valves?
They are open during heart relaxation.
They are closed when the ventricles are contracting.
They are forced open when the ventricles contract.
They are forced open when the atria contract.
They prevent backflow of blood between the atria and the ventricles.

Question
18 of 25

What two systems serve to regulate heart activity?
The autonomic nervous system and the ventricular impulse system
The peripheral nervous system and the ventricular impulse system
The autonomic nervous system and the central nervous system
The autonomic nervous system and the extrinsic conduction system
The autonomic nervous system and the intrinsic conduction system

Question
19 of 25

What is the name for the special tissue in the heart that starts each heart beat and sets the pace for the whole heart?
Bundle of His
AV bundle
AV node
SA node
Purkinje fibers

Question
20 of 25

What is the cardiac cycle?
The events related to one heartbeat.
The total amount of time if takes for one drop of blood to travel through the heart.
The number of beats of the heart per minute.
The events related to the flow of blood through the lungs.
The events between the SA node impulse and the AV node impulse.

Question
21 of 25

In what part of the cardiac cycle is the heart completely relaxed?
At the beginning of ventricular systole
During ventricular systole
Between diastole and systole
Mid-to-late diastole
After diastole

Question
22 of 25

What effect does exercise have on cardiac output?
It increases both the heart rate and the stroke volume.
It decreases both the heart rate and the stroke volume.
It increases the heart rate but decreases the stroke volume.
It decreases the heart rate but increases the stroke volume.
It only increases the heart rate.

Question
23 of 25

What is the effect of epinephrine on heart rate?
It causes a release of calcium and speeds up the heart rate.
It mimics sympathetic nerve stimulation and speeds up the heart rate.
It serves to slow down the intrinsic conduction system and slows down the heart rate.
It increases blood volume, therefore decreases heart rate.
It decreases blood volume, therefore increases heart rate.

Question
24 of 25

What are heart murmurs?
Incomplete closing of the valves
Blood leaking backward
Blood striking obstructions
Irregular closing of the valves
Partially clogged coronary arteries

Question
25 of 25

What is congestive heart failure?
Pumping inefficiency resulting in poor circulation
Damage to the AV node resulting in irregular heartbeat
A rapid heart rate resulting in poor circulation
Leakage between the left and right atria resulting in over pumping.
Enlarged ventricles resulting in a slow heart rate