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29 Cards in this Set
- Front
- Back
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The respiratory center in the brain stem that intensifies and prolongs inhalation
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Apneustic Center
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The dynamic relationship between the amount of ventilation the alveoli receive & the amount of perfusion through the capillary surround the alveoli
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Ventilation/Perfusion Ratio
V/Q |
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Hemoglobin that has as least one oxygen molecule attached to it.
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Oxyhemoglobin
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Hemoglobin that does not have any oxygen molecules attached to it.
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Deoxyhemoglobin
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A protein molecule that has four iron sites for oxygen to bind to.
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Hemoglobin
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Carbon dioxide is transported in the blood in 3 ways: Approximately __% is dissolved in the plasma, __% is attached to hemoglobin, and __% is in the form of bicarbonate
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7, 23, 70
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The force inside the vessel or capillary bed generated by the contraction of the heart and the blood pressure that exerts a "push" effect that forces fluid out of the vessel.
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Hydrostatic Pressure
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How much water is in plasma?
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91%
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A reservoir or capacitance system that houses the majority of blood that is capable of enlarging or reducing it's capacity to respond to increases or decreases in the blood volume.
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Venous System
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The force responsible for keeping fluid inside a vessel by exerting a "pull" effect.
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Plasma Oncotic Pressure
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The volume of blood ejected from the left ventricle in one minute.
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Cardiac Output
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The volume of blood ejected by the ventricles with each contraction.
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Stroke Volume
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The pressure generated in the left ventricle at the end of diastole (resting phase).
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Preload
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The meaning that something can generate it's own impulse.
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Automaticity
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The heart's automaticity is achieved through the conduction system with the ________ being the primary pacemaker
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Sinoatrial Node (SA)
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The stretch of the muscle fiber in the left ventricle at the end of diastole determines the force necessary to eject the blood contained within it.
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Frank-Starling Law of the Heart
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The force of contraction that the left ventricle has to generate to overcome the resistance in the aorta to eject the blood.
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Afterload
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The resistance of blood flow through a vessel based on the diameter of the vessel.
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Systemic Vascular Resistance
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The term for a decrease in vessel diameter.
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Vasoconstriction
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The term for an increase in vessel diameter.
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Vasodilation
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What does Vasoconstriction do?
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decreases vessel size, increases resistance, and increases BP
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What does Vasodilation do?
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increases vessel diameter, decreases resistance, and decreases BP
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The resistance of blood flow through a vessel based on the diameter of the vessel
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Systemic Vascular Resistance
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The flow of blood through the arterioles, capillaries, and venules that is the site of exchange of gases, nutrients, and waste products with the cells.
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Microcirculation
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The difference between the systolic and the diastolic BP readings.
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Pulse Pressure
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Three regulatory influences control blood flow through the capillaries:
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Local factors, Neural factors, and hormonal factors
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The measure of cardiac output
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Systolic Blood Pressure
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The measure of systemic vascular resistance
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Diastolic Blood Pressure
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Stretch-sensitive receptors located in the aortic arch and carotid bodies that constantly measure the BP
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Baroceptors
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