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رد: studying biology with الهوجاس خاص لـ nurses
Circulation
12- Which of the following is not an atrioventricular valve?
a- mitral valve
b- aortic semilunar valve
c- tricuspid valve
d- both (a) and (c)
13- What is the main function of the white blood cells?
a- blood clotting
b- fighting infection
c- transport oxygen
d- transport carbon dioxide
14- The sinoatrial (SA) node of the human heart is:
a- located at the base of the left atrial wall
b- initiates the heart beat
c- the pacemaker of the heart
d- (b) and (c) are correct
15- The closed sac that surrounds the heart is called:
a- endocardium
b- pleural membrane
c- pericardium
d- myocardium
16- Which of the following is correct, concerning the human heart?
a- its wall is mostly composed of cardiac muscle
b- has two atrioventricular valves
c- has four chambers
d- all of the above are correct
17- Which of the following are leucocytes?
a- thrombocytes
b- erythrocytes
c- neutrophils
d- all of the above are white blood cells
18- The left side of the heart:
a- has a bicuspid valve
b- contains oxygenated (oxygen-rich) blood
c- pumps blood into systemic circuit
d- all of the above are correct
19- Exchange of materials between blood and tissues occurs through the wall of:
a- capillaries
b- veins
c- venules
d- arteries
20- Which type of muscles is present in the wall of arteries?
a- cardiac muscles
b- striated muscles
c- smooth muscles
d- skeletal muscles
12- Which of the following is not an atrioventricular valve?
a- mitral valve
b- aortic semilunar valve #
c- tricuspid valve
d- both (a) and (c)
13- What is the main function of the white blood cells?
a- blood clotting
b- fighting infection #
c- transport oxygen
d- transport carbon dioxide
14- The sinoatrial (SA) node of the human heart is:
a- located at the base of the left atrial wall
b- initiates the heart beat
c- the pacemaker of the heart
d- (b) and (c) are correct #
15- The closed sac that surrounds the heart is called:
a- endocardium
b- pleural membrane
c- pericardium #
d- myocardium
16- Which of the following is correct, concerning the human heart?
a- its wall is mostly composed of cardiac muscle
b- has two atrioventricular valves
c- has four chambers
d- all of the above are correct #
17- Which of the following are leucocytes?
a- thrombocytes
b- erythrocytes
c- neutrophils #
d- all of the above are white blood cells
18- The left side of the heart:
a- has a bicuspid valve
b- contains oxygenated (oxygen-rich) blood
c- pumps blood into systemic circuit
d- all of the above are correct #
19- Exchange of materials between blood and tissues occurs through the wall of:
a- capillaries #
b- veins
c- venules
d- arteries
20- Which type of muscles is present in the wall of arteries?
a- cardiac muscles
b- striated muscles
c- smooth muscles #
d- skeletal muscles
52. Which of the following contains oxygenated blood?
a. right atrium
b. superior vena cava
c. pulmonary arteries
d. left atrium
53 ------------------ is a specific blood cell that secretes antibodies.
a. a monocyte
b. a neutrophil
c. a lymphocyte
d. an eusinophil
54. The valve which prevents the backward flow of the blood from left ventricle to left atrium is called:
a. bicuspid valve
b. mitral valve
c. atrio-ventricular valve
d. all are correct
67 T F The walls of the ventricles are thicker than those of the atria.
87. T F A pericardium is a double fold membrane which encloses the human heart.
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