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Heart/Circulation
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In the heart, one way traffic of blood is maintained by _____ (#) valves.
4
When the valve flaps become stiff,_____ (disease) occurs.
Stenosis
Influx of Na ions into muscle cell causes the _____ of action potential.
Rise
The actual spike of the potential is due to influx of ______ ions.
Calcium
Excitation sequence in the heart is started by_____.
SA node
Ectopic focus can be caused by _______.
Bad pacemaker
______ transports cholesterol to tissue cells.
LDL
Norephinephrine______blood vessels.
Constricts
Incompetent valves making veins dilated and torturous are called _____ veins.
Varicose
Histamine ______ blood vessels.
Dilates
Heart is covered by a double walled fibro-serous sac called ______.
Pericardium
Hyposecretion of pericardial fluid leads to_____.
Pericarditis
Walls of atria has combo like muscles called _____ muscles.
Pectinate
Intratrial septum has a depression called _______.
Fossa ovalis
Right ventricle pumps blood to_________.
Pulmonary
Internal walls of ventricle has muscular ridges called ______.
Trabeculae cornae
The valve which has 3 cusps is _______.
Tricuspid
The valve which resembles a Bishop miter is _______.
Bicuspid
Left ventricle pumps blood to the ______.
aorta
______ are white collagen cords attached to the valves also called as heart strings.
Chordae tendinae
Deficiency of blood delivery to myocardium results in _______.
Angina Pectoris
Prolonged coronary blockage leads to _____.
myocardial infarction
Resting membrane potential of cardiac muscle is ______ mv.
-90
Cardiac muscles are different from striated muscles by having a distinctive feature_______.
Intercalated discs
Resting stage of action potential is facilitated by influx of ______ ions.
Potassium
Irregular heart rhythms leads to _______
Arrythmia
Irregular contractions of the heart are called _______.
Fibrillations
Epinephrines cause ______ in skeletal and cardiac muscle.
Vasodialation
The smallest wave of a normal ECK is _____ wave.
Q
Ventricular repolarization leads to formation of ______ wave.
T
Systole refers to _____phase of the heart.
Contraction
Diastole refers to ______ phase of the heart.
Relaxation
The heart sounds Lub-Dup are the sounds associated with ______ valves.
Closing
If Vagus nerve connection to the heart is severed, the heart beat will ______.
Speed up.
Unidirectional valves are generally present in ______.
Arteries
Tunica ____ layer is thicker in veins when compared to arteries.
Media
Heart muscles receive oxygen from _____ circulation.
Coronary
The opening between the two atria and the fetus is called ______.
Foramin ovlae
Food lipoprotein that removes cholesterol from vessels and carries it to the liver is ______.
HDL
Difference between the systolic and diastolic pressure is called ______.
Pulse
Author
esellers
ID
214555
Card Set
Heart/Circulation
Description
Heart, circulation
Updated
2013-04-20T01:06:41Z
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