Multiple Choice Quiz

Please answer all questions


1	Functions of plasma proteins include all of the following except
		A)	blood clotting.
		B)	immune responses.
		C)	regulating heart rate.
		D)	regulating blood volume.


2	Which of the following formed elements is involved in blood clotting?
		A)	Erythrocytes.
		B)	Monocytes.
		C)	Neutrophils.
		D)	Thrombocytes.


3	Blood cell synthesis
		A)	occurs only in the bone marrow.
		B)	is an identical process for all blood cells.
		C)	is stimulated by varied chemicals.
		D)	is inhibited by vitamin B₁₂.


4	Individuals with blood type A would have which types of antibodies in their plasma?
		A)	Anti-A.
		B)	Anti-B.
		C)	Both anti-A and anti-B.
		D)	Neither anti-A nor anti-B.


5	Which of the following is true regarding blood clotting?
		A)	A lack of Ca²⁺ decreases the rate at which the blood clot forms.
		B)	Inherited clotting disorders can not be treated.
		C)	Prostacyclin is required for platelets to adhere to the ruptured endothelium.
		D)	Fibrin is produced by the enzymatic cleavage of thrombin.


6	The pH of the blood would decrease as a result of
		A)	hyperventilation.
		B)	hypoventilation.
		C)	excessive bicarbonate production.
		D)	excessive vomiting.


7	Which of the following is correct concerning the structure and function of the heart?
		A)	The right atrium receives blood from the pulmonary circulation.
		B)	The chordae tendineae attach the semilunar valves to the walls of the ventricles.
		C)	The left ventricle ejects blood into the pulmonary circulation.
		D)	The bicuspid and mitral valves prevent blood from flowing into the atria from the ventricles.


8	Which of the following is correct regarding the events of the cardiac cycle?
		A)	Closure of the atrioventricular valves produces the first heart sound.
		B)	Ventricular pressure is increasing during isovolumetric ventricular relaxation.
		C)	Ventricular volume is the greatest at the end of systole.
		D)	The semilunar valves close at the end of diastole.


9	In the electrocardiogram
		A)	the P wave represents ventricular repolarization.
		B)	the QRS complex represents depolarization of the ventricles.
		C)	the T wave represents atrial depolarization.
		D)	the atria repolarize during the time between the QRS complex and T wave.


10	Regarding the circulatory system,
		A)	the arteries always contain blood that is high in oxygen.
		B)	valves are found in the arteries and veins.
		C)	capillaries are composed of a single cell layer.
		D)	the skeletal muscle pump aids in driving blood flow through the arteries.


11	Atherosclerosis
		A)	tends to be greater in people with high concentrations of HDLs in their blood.
		B)	initially begins as a fibrous plaque in the arteries.
		C)	is worsened by increased vitamin C and E intake.
		D)	may be treated through diet and exercise.


12	A patient enters the hospital complaining of chest pains. The results of an ECG indicate a depression in the S-T segment of the ECG. The most likely reason for this observation would be
		A)	a first-degree AV node block.
		B)	atrial flutter.
		C)	myocardial ischemia.
		D)	tachycardia.


13	The lymphatic system
		A)	returns interstitial fluid to the circulatory system.
		B)	absorbs lipids from the small intestine.
		C)	produces megakaryocytes.
		D)	regulates the pH of the interstitial fluid.

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