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35 Cards in this Set
- Front
- Back
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Basic Circulation Transport System |
cells in direct contact with enviroment |
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Gastrovascular Cavity Transport system |
For digestion, distribute substances |
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Circulatory System |
Moves fluid through tissues and cells for exchange |
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Closed circulatory system |
blood is in vessels and pumped through the body |
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open circulatory system |
blood bathes with organs / Blood+lymph =Hemolymph |
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Pumps blood into the heart |
Vein |
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Pumps blood away from the heart |
artery |
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Connects veins and arteries |
capillaries |
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blood enters through an |
atrium |
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blood is pumped out through |
ventricle |
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fish have |
single circulation pathway |
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mammals and reptiles have |
double pathways |
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Mammalian Cirulation |
Begins in RV pumping deoxygenated blood the the PA to the L/ Blood loads O2 and unloads CO2/ oxygenated blood enters LA through PV and through the aorta to the body tissue by the LV |
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Systole |
Contraction in Cardiac Cycle |
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Diastole |
relaxation or filling phase in Cardiac Cycle |
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Heart Rate |
# of beats per min in CC |
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Stroke Volume |
Amount of blood pumped by LV during a contraction |
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Cardiac Output |
volume of blood pumped into the systemic circulation per minute depends on HR&SV |
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Atrioventricular valves |
separate each atrium and ventricle |
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Semilunar valves |
control blood flow from aorta and PA |
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Sinoatrial Node |
Pacemaker |
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Impulses recorded as |
electrocardiogram ECG |
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Sympathetic Division |
Speeds up pacemaker |
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parasympathetic division |
slows down the pacemaker |
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blood pressure |
systollic/diastolic pressure |
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Systollic |
heart contract High pressure |
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diastolic |
heart relaxed |
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pulse |
rhythmic bulging artery walls with each heartbeat |
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Blood pressure is determined by |
cardiac output |
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Vasonconstriction |
contraction of smooth muscle; increases blood pressure |
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Vasodilation |
relaxation of smooth muscle; decreases blood pressure |
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Atherosclerosis |
build up of plaque deposits within arteries |
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Heart Attack |
blockage of coronary arteries |
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Stroke |
rupture or blockage of arteries in the head |
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hypertension |
high blood pressure |
