 Cardiac/Respiratory Clicker Quiz Human Biology

A mammalian heart has ___chamber(s) A. One B. Two C. Three D. Four

In a mammal, blood pressure is lowest in the A. Aorta B. Vena cavae C. Capillaries of the arm D. Veins of the leg

Blood leaves the human heart from: A. Left and right atria B. Left ventricle only C. Right ventricle only D. Right ventricle and left ventricle

The term vasoconstriction refers to A. Increasing the size of the lumen of the blood vessel B. Decreasing the size of the lumen of the blood vessel C. Delivering oxygen and nutrients to the body tissues D. Delivering waste products to the kidney for excretion

Which of the following represents the flow of blood from the heart to the body organs and back to the heart? A. Venules to capillaries to veins to arteries B. Arteries to capillaries to veins C. Capillaries to arterioles to veins D. Veins to arteries to capillaries to arterioles

Which of the following chambers of the heart receives blood from the lungs? A. Right atrium B. Left atrium C. Right ventricle D. Left ventricle

This bag is a thin membrane that surrounds the heart. A. Visceral pleura B. Auricle C. Pericardium D. Thalamus

Starting from the right atrium, which of the following is the correct pathway for blood to flow through the human circulatory system? A. Mitral valve, right ventricle, pulmonary vein, aorta B. Right ventricle, pulmonary artery, left atrium, aorta, left ventricle C. Tricuspid valve, right ventricle, pulmonary artery, left atrium

Systemic circulation refers to the circulation of blood: A. To the lungs and back B. Within the brain C. Throughout the body D. Within the heart

True/False: The left side of the heart pumps the same amount of blood as the right. A. True B. False

True/False: An obstruction in the superior vena cava would decrease the flow of blood from the head and neck to the heart. A. True B. False

Which of the following are involved directly in the pulmonary circulation? A. Superior vena cava, right atrium and left ventricle B. Right ventricle, pulmonary artery and left atrium C. Left ventricle, aorta and inferior vena cava D. Right atrium, aorta and left ventricle

The second heart sound, described as “dub” is actually the A. Atria contracting B. Ventricles contracting C. Atrioventricular valves closing D. Semilunar valves closing E. Heart slapping the liver

The tricuspid valve is closed A. While blood flows from the right ventricle to the pulmonary trunk B. While blood flows from the atrium to the ventricle C. By the movement of blood from the superior vena cava to the right atrium D. While the atrium is contracting

The valve located between the left atrium and left ventricle is the A. Aortic semilunar valve B. Bicuspid (mitral) valve C. Pulmonary semilunar valve D. Tricuspid valve

Strong connective tissue strings that are attached to papillary muscles and to the cusps of the atrioventricular valves are A. Musculi pectinati B. Traveculae carnae C. Chordae tendinae D. The interventricular septum

Which statement best describes arteries? A. All carry oxygenated blood to the heart B. All carry blood away from the heart C. All contain valves to prevent the backflow of blood D. Only large arteries are lined with endothelium

Select the correct statement about the heart valves A. The mitral valve separates the right atrium from the right ventricle B. The tricuspid valve divides the left atrium from the left ventricle C. Aortic and pulmonary valves control the flow of blood into the heart D. The AV valves are supported by the chordae tendinae so that no regurgitation of blood into the atria occurs

Blood within the pulmonary veins returns to the _____. A. Right atrium B. Left atrium C. Right ventricle D. Left ventricle

Which vessel(s) of the heart receive(s) blood during right ventricular contraction? A. Vena cava B. Pulmonary trunk C. Aorta D. Pulmonary veins

The nose serves all the following functions except A. As a passageway for air movement B. As the initiator of the cough reflex C. Warming and humidifying the air D. Cleansing the air

Surfactant helps to prevent the alveoli from collapsing by A. Humidifying the air before it enters B. Warming the air before it enters C. Interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid D. Protecting the surface of alveoli from dehydration and other environment variations

The respiratory membrane is a combination of A. Respiratory bronchioles and alveolar ducts B. Alveolar walls, alveolar space and capillary walls C. Atria and alveolar sacs D. None of the above

The pleurae are vital to the integrity of the lungs because they A. Contain cilia that protect the lungs B. control the volume of the lungs C. Secrete a lubricating serous fluid, allowing the lungs to glide over the thoracic wall during breathing D. Maintain the proper temperature of the lungs during sleep