Daniel D. Chiras: Human Biology, Fifth Edition: Practice Quizzes

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Title Text: Daniel D. Chiras: Human Biology, Fifth Edition

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Practice Quizzes

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Tools For Learning: Practice Quizzes

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor.

1: Which of the following is not true?
	A: The muscular layer of the heart is called the myocardium
	B: The pulmonary circuit of the cardiovascular system transports blood from the heart to the lungs
	C: Blood is transported to the body via the vena cavae
	D: The left ventricle pumps blood that is distributed to the head and the rest of the body

2: The _________ valves are one-way valves that prevent blood from draining from the aorta back into the left ventricle.
	A: semilunar
	B: bicuspid
	C: tricuspid
	D: atrioventricular

3: Heart sounds heard through a stethoscope are
	A: produced by the flow of blood through the heart
	B: produced by the closing of the valves
	C: produced only by the closing of the semilunar valves
	D: produced only by the closing of the atrioventricular valves

4: The pacemaker of the heart is
	A: the atrioventricular node
	B: located in the wall of the left atrium
	C: known as the Purkinje fiber
	D: the sinoatrial node

5: Defibrillation
	A: occurs during some heart attacks and is characterized by abnormal electrical activity in the heart muscle cells
	B: can be achieved by cardiopulmonary resuscitation
	C: is a procedure used to measure electrical activity in the heart
	D: is a procedure in which the electrical activity of the heart muscle cells is restored

6: A myocardial infarction
	A: is a type of heart attack that occurs when blood flowing through the cardiac arteries is blocked, causing muscle cells to die
	B: occurs when heart muscle cells die as a result of abnormal electrical activity
	C: is a procedure used to measure stroke volume and cardiac output
	D: is common in people who eat low fat diets and get plenty of exercise

7: Which of the following is not a risk factor for heart attack?
	A: a fatty diet
	B: a sedentary lifestyle
	C: smoking
	D: stress management capabilities

8: A heart murmur is caused by
	A: weak heart muscle
	B: a defective heart valve
	C: a defect in the aorta
	D: a defect in the vena cave

9: Which of the following is not true?
	A: Arteries transport blood away from the heart
	B: Nutrients and waste are transported across veins into body tissues
	C: Capillaries are found in branching networks in the tissues of the body
	D: The transport of blood through veins is aided by valves

10: The aorta and its large branches
	A: contain numerous elastic fibers that help propel blood throughout the body
	B: are large veins with irregular walls
	C: are supplied with blood from the right atrium of the heart
	D: have the lowest blood pressure in the circulatory system

11: An aneurysm is a ballooning that occurs in
	A: arteries
	B: veins
	C: the wall of the heart
	D: None of the above

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