Definitions and Equations Flashcards
Define blood pressure.
The pressure exerted on the blood vessels by the blood
What is the equation for blood pressure?
Cardiac output x total peripheral resistance
What is the equation for cardiac output?
Heart rate by stroke volume
What is peripheral vascular resistance?
Resistance to blood flow
Define systolic blood pressure.
Pressure in artery following ventricular systole
Define diastolic blood pressure.
Pressure in artery during ventricular diastole
Define pulse pressure.
Difference between systolic and diastolic pressure during the cardiac cycle
What is the equation for pulse pressure?
Systolic-diastolic
Define mean arterial blood pressure
Mean blood pressure throughout the cardiac cycle
What is the equation for mean arterial blood pressure?
Diastolic + 1/3 (systolic-diastolic)
Define tidal volume (Vt)
The amount of air inhaled or exhaled with each breath
Define expiratory reserve volume (ERV)
The volume of air that can be voluntarily expelled after completing a normal, quiet respiratory cycle
Define inspiratory reserve volume (IRV)
The volume of air that can be inhaled above the Tidal volume
Define vital capacity (VC)
Tidal volume plus expiratory and inspiratory reserve volumes
Define residual volume (RV)
Air left in lungs after maximum exhalation
Define total lung capacity (TLC)
Total volume of the lungs = vital capacity + residual volume
What is the equation for vital capacity?
Tidal volume + inspiratory reserve volume + expiratory reserve volume
What is the equation for total lung capacity?
Vital capacity + residual volume
What is minute ventilation?
The volume of air brought into the lungs every minute
What is the equation for minute ventilation?
Tidal volume x respiration rate
