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21 Cards in this Set
- Front
- Back
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80. How does the “circulatory system” work?
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O2 and food are carried to cells of body. CO2 and other wastes carried away from cells to excretory organs
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81. Name the 3 layers of the heart, also their location
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a.Epicardium – Thin outer layer
b.Myocardium- Middle muscle layer c.Endocardium – Thin inner layer |
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82. Name the chambers of the heart and their function.
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a.R atrium- receives deoxygenated blood from Sup and Inf vena cava
b.R ventricle- Receives blood from R atrium, pumps into pulmonary artery c.L atrium- Receives oxygenated blood from lungs, pumps to L atrium d.L ventricle- Receivs blood from L atrium pumps it to aorta |
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83. Explain how the cardiac cycle works.
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One complete contraction and subsequent relaxation of the heart. lasts about 0.8 seconds
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84. Explain the function of the pulse.
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The palpable rhythmic throbbing caused by the alternating expansion and contraction of an artery as a wave of blood passes through it.
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85. Explain how blood pressure is measured and give name of device used.
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The measure of force exerted by the blood on the walls of blood vessels. A sphygmomanometer is used.
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86. Name the two components of BP? And the significant of each.
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a.Systolic- Pressure in arteries during contraction
b.diastolic- Pressure during relaxation |
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87. Explain how the vascular system works.
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Is a system of blood vessels that form the closed system by which blood is circulated to all parts of the body.
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88. What is the function of arteries?
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Blood vessels that carry blood away from the heart.
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89. What is the function of veins?
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Blood vessels that return blood to the heart.
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90. What are the smallest, largest and longest veins called
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Venules, vena cava, great saphenous
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91. What is the function of capillaries?
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Connect arterioles and venules, forming a bridge between arterial and venous circulation.
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92. List the 3 layers of blood vessels and give location of each.
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a.Tunica adventitia- Outer layer
b.Tunica media, Middle layer c.Tunica intima, Inner layer |
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93. What is the definition for lumen?
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The internal space of a blood vessel through which the blood flows.
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94. Why are valves within veins?
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To prevent backflow. They help keep blood flowing in one direction toward the heart.
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95. Phlebotomist main drawing location is? Where are the 3 major veins, name them.
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a.The antecubital fossa
b.Median cubital vein (center vein) c.Cephalic vein (lateral) (thumb) d.Basilic Vein (Medial) (Pinky) |
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96. The composition of blood is equivalent to?
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90% water, 10% dissolved substances.
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97. Name the 5 formed elements and the functions of each
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a.Erythrocytes- Carry oxygen from lung to cell; carries CO2 back to lungs.
b.Leukocytes- Neutralizes or destroys pathogens c.Granulocytes- Neutralizes or destroys pathogens d.Agranulocytes- Neutralizes or destroys pathogens e.Thrombocytes- Essential for coagulation |
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98. Explain a transfusion reaction, also list the 4 blood types, and define UD and UR.
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Transfusion reaction is a reaction between donor and recipient cells. A, B,AB,O are the 4 blood types. UD- Universal Donor, UR- Universal recipient
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99. Explain the difference between whole blood, serum, and plasma.
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a. Whole blood- Same as in body. Anticoagulant added.
b. Serum- Will coagulate, separated by a centrifuge. remaining fluid is serum c. Plasma- Anticoagulant is added. Centrifuge separates plasma from red blood cells |
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100. Explain how the lymphatic system works.
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Returns tissue fluid to the bloodstream, protects the body by removing microorganism and impurities, processes lymphocytes, and delivers fats absorbed from the small intestine to the bloodstream.
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