Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
The respiratory center in the brain stem that intensifies and prolongs inhalation
|
Apneustic Center
|
|
The dynamic relationship between the amount of ventilation the alveoli receive & the amount of perfusion through the capillary surround the alveoli
|
Ventilation/Perfusion Ratio
V/Q |
|
Hemoglobin that has as least one oxygen molecule attached to it.
|
Oxyhemoglobin
|
|
Hemoglobin that does not have any oxygen molecules attached to it.
|
Deoxyhemoglobin
|
|
A protein molecule that has four iron sites for oxygen to bind to.
|
Hemoglobin
|
|
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
|
7, 23, 70
|
|
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.
|
Hydrostatic Pressure
|
|
How much water is in plasma?
|
91%
|
|
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.
|
Venous System
|
|
The force responsible for keeping fluid inside a vessel by exerting a "pull" effect.
|
Plasma Oncotic Pressure
|
|
The volume of blood ejected from the left ventricle in one minute.
|
Cardiac Output
|
|
The volume of blood ejected by the ventricles with each contraction.
|
Stroke Volume
|
|
The pressure generated in the left ventricle at the end of diastole (resting phase).
|
Preload
|
|
The meaning that something can generate it's own impulse.
|
Automaticity
|
|
The heart's automaticity is achieved through the conduction system with the ________ being the primary pacemaker
|
Sinoatrial Node (SA)
|
|
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.
|
Frank-Starling Law of the Heart
|
|
The force of contraction that the left ventricle has to generate to overcome the resistance in the aorta to eject the blood.
|
Afterload
|
|
The resistance of blood flow through a vessel based on the diameter of the vessel.
|
Systemic Vascular Resistance
|
|
The term for a decrease in vessel diameter.
|
Vasoconstriction
|
|
The term for an increase in vessel diameter.
|
Vasodilation
|
|
What does Vasoconstriction do?
|
decreases vessel size, increases resistance, and increases BP
|
|
What does Vasodilation do?
|
increases vessel diameter, decreases resistance, and decreases BP
|
|
The resistance of blood flow through a vessel based on the diameter of the vessel
|
Systemic Vascular Resistance
|
|
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.
|
Microcirculation
|
|
The difference between the systolic and the diastolic BP readings.
|
Pulse Pressure
|
|
Three regulatory influences control blood flow through the capillaries:
|
Local factors, Neural factors, and hormonal factors
|
|
The measure of cardiac output
|
Systolic Blood Pressure
|
|
The measure of systemic vascular resistance
|
Diastolic Blood Pressure
|
|
Stretch-sensitive receptors located in the aortic arch and carotid bodies that constantly measure the BP
|
Baroceptors
|