Term
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Definition
Deliver: O2 & Nutrients
Remove: Waste
Regulates: Temperature |
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Term
|
Definition
Aorta-Arteries-Arterioles-Capillaries-
Venules-Veins-Vena Cava |
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Term
|
Definition
1. Pericardium (outside)
2. Myocardium (middle)
3. Endocardium (inside) |
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Term
| Unique aspects of Myocardium |
|
Definition
1. Intercalated disc connection
2. Short, Branched fibers |
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Term
| Myocardium similarities to Skeletal Muscle |
|
Definition
1. Striated tissue
2. Contractile process |
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Term
|
Definition
| Q = Stroke Volume x Heart Rate |
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Term
|
Definition
Increases w/ exercise
Increase EDV=Increase Ventricular Stretch=Increase SV
Increase Actin/Myosin interaction
Enhanced Ca+ kinetics |
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Term
|
Definition
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Term
|
Definition
| Cardiac Output & Blood flow distribution |
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Term
| Where is most blood sent to during exercise? |
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Definition
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Term
| Main factor influencing EDV |
|
Definition
Venoconstriction
(Small change in radius=large change in volume) |
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Term
|
Definition
| Increase in Ca+ and epinephrine |
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Term
|
Definition
Decreases local sympathetic output
= increased local vesodilation
(meets local blood flow demand) |
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Term
| Where is your cardiovascular control center (CVC) and the respiratory control center located? |
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Definition
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Term
| O2-Hemoglobin dissociation curve |
|
Definition
Favors "unloading" of O2 from the hemoglobin to the tissues.
Good response for exercise.
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|
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Term
|
Definition
Dissolved (7-10%)
Hemoglobin (20%)
Bicarbonate (70%)
CO2+H2O<->H2CO3<->H++HCO3- |
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|
Term
primary stimulus for thermoregulatory adaptations |
|
Definition
Elevated core temperature
(2 wks to adjust, 28 days to revert) |
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Term
|
Definition
1. Early onset of sweating
2. Higher sweat rate
3. Reduced NaCl loss in sweat |
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|
Term
| Most important way of heat loss while exercising is? |
|
Definition
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