The muscular layer of the heart is called the myocardium

The Circulatory System

1: Which of the following is not true?

[removed] The muscular layer of the heart is called the myocardium

[removed] The pulmonary circuit of the cardiovascular system transports blood from the heart to the lungs

[removed] Blood is transported to the body via the vena cavae

[removed] 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.

[removed] semilunar

[removed] bicuspid

[removed] tricuspid

[removed] atrioventricular

3: Heart sounds heard through a stethoscope are

[removed] produced by the flow of blood through the heart

[removed] produced by the closing of the valves

[removed] produced only by the closing of the semilunar valves

[removed] produced only by the closing of the atrioventricular valves

4: The pacemaker of the heart is

[removed] the atrioventricular node

[removed] located in the wall of the left atrium

[removed] known as the Purkinje fiber

[removed] the sinoatrial node

5: Defibrillation

[removed] occurs during some heart attacks and is characterized by abnormal electrical activity in the heart muscle cells

[removed] can be achieved by cardiopulmonary resuscitation

[removed] is a procedure used to measure electrical activity in the heart

[removed] is a procedure in which the electrical activity of the heart muscle cells is restored

6: A myocardial infarction

[removed] is a type of heart attack that occurs when blood flowing through the cardiac arteries is blocked, causing muscle cells to die

[removed] occurs when heart muscle cells die as a result of abnormal electrical activity

[removed] is a procedure used to measure stroke volume and cardiac output

[removed] 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?

[removed] a fatty diet

[removed] a sedentary lifestyle

[removed] smoking

[removed] stress management capabilities

8: A heart murmur is caused by

[removed] weak heart muscle

[removed] a defective heart valve

[removed] a defect in the aorta

[removed] a defect in the vena cave

9: Which of the following is not true?

[removed] Arteries transport blood away from the heart

[removed] Nutrients and waste are transported across veins into body tissues

[removed] Capillaries are found in branching networks in the tissues of the body

[removed] The transport of blood through veins is aided by valves

10: The aorta and its large branches

[removed] contain numerous elastic fibers that help propel blood throughout the body

[removed] are large veins with irregular walls

[removed] are supplied with blood from the right atrium of the heart

[removed] have the lowest blood pressure in the circulatory system

11: An aneurysm is a ballooning that occurs in

[removed] arteries

[removed] veins

[removed] the wall of the heart

[removed] None of the above

12: The lymph is pumped through the body by

[removed] the heart

[removed] the lungs

[removed] the kidneys

[removed] skeletal muscle movement

[removed] the spleen

 

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