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57 Cards in this Set
- Front
- Back
the contraction of the heart is called _________ |
systole |
|
_____________ systole occurs before _____________ systole |
atriole ventricular |
|
time of relaxation between systoles is called_________ |
diastole |
|
The volume of blood in the ventricle at the end of diastole is called the |
end diastolicvolume |
|
Each ventricle has a stroke volume of ~ ___ mL |
70 |
|
____________with astethoscope is thecommon way to analyzethe sounds. |
Auscultation |
|
skeletal muscle have ____________contraction |
isometric |
|
heart has ___________ contraction |
isovolumetric |
|
what is a
|
ventricular filling |
|
what is b |
isovolumetric contraction |
|
what is c |
ejection |
|
what is d |
isovolumetric relaxation |
|
Ventricular compliance is determined by the physicalproperties of the |
the tissues making up the ventricular wall and by the state of ventricular relaxation |
|
in __________________ _________________ theventricular compliance is decreased (i.e., theventricle is "stiffer") |
ventricular hypertrophy |
|
what is the Frank-Starling Mechanism |
an increase in preload volume leads to an increase in stroke volume |
|
The force of contraction increases with increasing ____________ |
preload |
|
what changes length-tension relationship |
stretching cardiac muscle |
|
red |
aortic valve closes |
|
orange |
aortic valve opens |
|
blue |
mitral valve opens |
|
yellow |
mitral valve closes |
|
_______________ is Intrinsic ability of cardiac muscle fiber to contract at any given fiber length |
contractility |
|
Cardiac contractility is increased by __________ _______________ |
sympathetic stimulation |
|
Any chemical that affects contractility is a___________ agent |
inotropic agent |
|
what are some postive inotropic chemicals? |
catecholamines and digitalis |
|
contractility increases as available __________ increases |
calcium |
|
____________ increase Ca 2+ entry and storage |
catecholamines |
|
_____________ circulation is a high resistance, high pressure circuit |
systemic |
|
__________ circulation is a low resistance, low pressure circuit |
pulmonary |
|
Arteriolar radius is (greather than, less than) capillary radius |
greater than |
|
Number of arterioles is (greater than, less than) number of capillaries |
less than |
|
backing up of blood in the left atrium rheumatic heart disease consequent elevated left atrial pressure |
mitral stenosis |
|
what is mitral regurgitation caused by |
incomplete valve closure allowing blood to flow backward hypertrophic cardiomyopathy |
|
blood flowing back into left ventricle |
aortic regurgitation |
|
obstruction of outflow from left ventricle |
aortic stenosis |
|
an enlarged heart is also known as.. |
dilated cardiomyopathy |
|
what happens during dilated cardiomyopathy |
the contraction of the heart muscle is weakened and theleft ventricle becomes dilated |
|
cause for dilated cardiomyopathy |
coronary artery obstruction |
|
abnormal thickening of the septum and drastic reduction of ventricular volume |
hypertrophic cardiomyopathy |
|
brief loss of consciousness due to irregular beating of heart is called _______ |
syncope |
|
experience sensations of irregular or rapid heartbeats are called |
heart palpitations |
|
the atrial contraction is not alwaysfollowed by a ventricularcontraction is called an.. |
atrioventricular block |
|
an abnormally short interval betweenheartbeats |
tachycardia |
|
____________ ___________________ occurs when a patch of heart muscle dies because of asudden blockage of a coronary artery |
myocardial infraction |
|
________ _______________produces attacks of sudden chest pain |
angina pectoris |
|
the heart's oxygen demand beinghigher than the supply is called ____________ ____________ |
myocardial ischemia |
|
angina may be induced by... |
exertion emotional stress increase in heart rate |
|
__________ ___________ is a sudden irreversible, ischemicinjury due to coronary arterial narrowing or occlusion with sustaineddamage to a part of the myocardium |
myocardial infarction |
|
___________ an abnormal blood clot attached to a vessel wall |
thrombus |
|
_________a freely floating mass or foreign body |
embolus |
|
first, second or third degree heart block: Due to damage between the SA and AV node manifested as prolonged PR interval |
first |
|
first, second or third degree heart block: not all P waves are followed by QRS complex |
second |
|
first, second or third degree heart block: The flow of impulses between the atria andventricles is completely blocked The atria and ventricles contract at their ownseparate rates |
third |
|
Coordinated contractions break down is called _______________ |
fibrillation |
|
____________ is a strongelectrical shock that depolarizesall cells |
defibrillation |
|
Arteriole pressure is influenced by the ease at which blood can... |
flow out of the arteries into thearterioles |
|
Increased blood pressure stretches smooth muscles in vessel walls is called |
myogenic autoregulation |