Unit 3 Area Of Study 2 Flashcards
Tidal Volume [TV]
How much air is inspired (breathed in) or expired (breathed out) in one breath
Respiratory Rate [RR]
The number of breaths taken in one minute
Plateau
To reach a period or level where no change is observed
Ventilatory Threshold
The point where ventilation increases at a non-linear rate
Diffusion
The movement of molecules from an area of higher concentration to one of lower concentration
Cardiac Output [Q]
The amount of blood pumped out of the heart in one minute
Stroke Volume [SV]
The amount of blood ejected by the left ventricle per beat
Heart Rate [HR]
The number of times the heart beats in one minute
Systolic Blood Pressure
Pressure in the arteries following contraction of ventricles as blood is pumped out of the heart
Ventilation [V]
How much air is breathed out in one minute
Diastolic Blood Pressure
Pressure in the arteries when the heart relaxes and ventricles fill with blood
Vasoconstriction
A decrease in the diameter of a blood vessel, resulting in an decrease in blood flow to the area, supplied by the blood vessel
Vasodilation
An increase in the diameter of a blood vessel, resulting in an increase in blood flow to the area supplied by the blood vessel
Arteriovenous Oxygen Difference (a-v02 diff)
Difference in oxygen concentration in the arterioles compared with the venules
Motor Unit
A motor neuron and the muscle fibres it stimulates