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30 Cards in this Set

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