Term
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Definition
Pulmonary Circuit
Systemic Circuit |
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Term
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Definition
Heart to lungs and back to heart
artery will be blue
veins will be red |
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Term
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Definition
Heart to body systems and back to heart
artery will be red (oxygenated)
veins will be blue (deoxygenated) |
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Term
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Definition
Carry blood away from heart
arterioles are small vessels in this category |
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Term
| veins carry blood back to the heart |
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Definition
| venues are small vessels in this category |
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Term
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Definition
are smallest blood vessels that links arterial to venous side of system
nutrient, waste and gas exchange occur at this level |
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Term
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Definition
surrounds the heart, has a small amount of pericardial fluid
cavity is lined with pericardium |
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Term
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Definition
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Term
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Definition
| forms outer wall of cavity |
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Term
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Definition
epicardium (visceral pericardium)
Myocardium (Muscles of the heart wall)
Endocardium (inner lining of heart chambers) |
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Term
| fibrous skeleton of the heart |
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Definition
collagen and elastic fibers
stabilizes muscle position
distributes forces
prevents over expansion and provides elasticity
isolates chambers |
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Term
superficial anatomy of the heart
(3) |
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Definition
auricle=arterial appendage
coronary sulcus= groove b/tw atria and ventricles
anterior/posterior inter ventricular sulci |
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Term
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Definition
Openings for inferior and superior vena cava
coronary sinus(blood return from heart muscle)
fossa ovalis (depression- remnant of foramen ovale) |
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Term
| Right Atrioventricular Valve (AV) |
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Definition
right tricuspid
b/tw right atrium and right ventricle |
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Term
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Definition
pumps blood through pulmonary circuit
chordae tendinae attached to free edge of tricuspid valve leaflets |
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Term
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Definition
| prevents back flow through the tricuspid valve |
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Term
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Definition
| muscles in wall of ventricle |
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Term
| pulmonary semilunar valve |
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Definition
| guards the opening to pulmonary trunck |
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Term
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Definition
| openings for 2 right and 2 left pulmonary veins |
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Term
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Definition
| Bicuspid b/tw left atrium and left ventricle. |
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Term
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Definition
| largest chamber thickest walls, pump blood to the systemic circuit |
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Term
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Definition
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Term
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Definition
| remnant of ductus arterioles |
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Term
| what are heart sounds caused by |
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Definition
| closure of valves at onset of ventricular contraction. |
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Term
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Definition
| closure of the AV valves at the onset of ventricular contraction |
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Term
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Definition
| closure of semilunar valves at onset of ventricular relaxation |
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Term
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Definition
| provide blood to muscle of heart wall |
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Term
true of false
the heart is under control of nodal cells which depolarize spontaneously |
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Definition
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Term
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Definition
pacemaker
depolarizes 80-100 times per minute |
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Term
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Definition
| heart rate slower than normal |
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Term
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Definition
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Term
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Definition
squeezes from the bottom up- gives other areas time to fill up between contractions
SA node-- AV node--AV bundle---RT LT bundle branches--purkinje fibers |
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Term
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Definition
contraction phase (emptying for a chamber)
1st heart sound beginning of ventricle systole |
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Term
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Definition
the relaxation phase (filling of a chamber)
2nd heart sound at begging of ventricle diastole |
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Term
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Definition
| depolarization of the atria (2nd message to contract) |
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Term
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Definition
depolarization of the ventricles (3 ventricles contraction first heart sound)
masks depolarization of atria |
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Term
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Definition
depolarization of ventricles
ventricular diastole
(4 ventricular relaxation 2nd heart sound) |
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