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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
what is a

ventricular filling

what is b

what is b

isovolumetric contraction

what is c

what is c

ejection

what is d

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

red

aortic valve closes

orange

orange

aortic valve opens

blue

blue

mitral valve opens

yellow

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