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30 Cards in this Set
- Front
- Back
Alternating surges of pressure in an artery that occur with each contraction and relaxation of the left ventricle
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pulse
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Often referred to as the pacemaker of the heart because it sets the rate of depolarization for the heart as a whole.
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sinoatrial node
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This wave indicates depolarization of the atria just before atrial contraction.
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P wave
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A heat rate over 100 bpm
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Tachycardia
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When a “blood pressure cuff” is placed around the arm and in- flated to a pressure higher than the systolic pressure, circula- tion to the forearm is occluded. As this pressure is released, characteristic sounds are heard, which indicate the resumption of blood to the forearm. What are these sounds called?
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Sounds of Korotokoff
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A double walled fibrous sac that encloses the heart
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Pericardium
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The graphic recording of the electrical charges occurring during the cardiac cycle is called a/an ____________?
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ECG
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The apex of the heart is located at the ______________ and is in line with the middle region of the left clavicle.
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5th intercostal space
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The length of a normal cardiac cycle.
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0.8 sec
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One superficial pulse that may be readily palpated
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Radial pulse
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The left atrioventricular valve
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Bicuspid valve
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These arteries ascend through the lateral neck and at the superior border of the larynx and divide into two branches
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Common carotid arteries
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Supplies the duodenum and the stomach
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Common hepatic artery
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Site where exchanges of food and gases are made
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Capillaries
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Carries oxygen-poor blood to the lungs
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Pulmonary trunk
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Longest vein in the body, superficial
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Great saphenous vein
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Major artery of the thigh
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Femoral artery
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Supplies the small intestine
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Superior messenteric artery
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Artery usually palpated to take the blood pressure
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Brachial artery
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Carries oxygen-rich blood from the lungs.
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Pulmonary vein
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Blood enters which of these vessels during ventricular systole?
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Aorta and pulmonary arteries
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The tricuspid valve is closed:
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when the ventricle is in systole
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The second heart sound is heard during which phase of the cardiac cycle?
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Isovolumetric relaxation
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Stenosis of the mitral valve may initially cause a pressure increase in the:
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Pulmonary circulation
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If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid:
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Slow calcium channels in the pacemaker tissue would be cycling at a greater rate
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Which of the following are involved directly in pulmonary circulation?
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Right ventricle, pulmonary artery, left atrium
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Histologically, the _________ is squamous epithelium supported by a sparse connective tissue layer.
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Tunica intima (interna)
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A thrombus (blood clot) in the first branch of the arch of the aorta would affect the flow of blood to the:
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Right side of the head and neck and right upper arm
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Cerebral blood flow is regulated by:
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Intrinsic autoregulatory mechanisms
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A patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes EXCEPT:
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Decreased size of the heart muscle
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