U1 AOS2 Flashcards
What is the formula for cardiac output (Q)
Q = stroke volume (SV) x heart rate (HR)
What is stroke volume (SV)?
The amount of blood that is pumped out of the left ventricle per beat
What is cardiac output (Q) ?
Total amount of blood leaving the heart per minute
Define sedentary
Non-active or non-athlete
Blood composition
What is the function of plasma
Rest
- suspend and carry other cells around the body
Exercise
- pass fluid from blood to body tissue
Blood composition
What is the function of platelets
Rest
- form blood clots at damaged tissue to prevent infection and blood loss
Exercise
- prevent bleeding when muscle tissue is damaged during exercise
Blood composition
What is the function of red blood cells
Rest
- carry oxygen to where it is needed in the body
Exercise
- carry carbon dioxide and metabolic byproducts away from the body
Blood composition
What is the function of white blood cells
Rest
- fight infection and disease by destroying bacteria
Exercise
- increased activity - keep athletes healthy and able to perform
Describe systolic blood pressure
- high pressure
- left ventricle contracts
Describe diastolic blood pressure
- low pressure
- left ventricle relaxes
Describe vasoconstriction
The contraction of blood vessels that increases blood pressure
Describe vasodilation
The dilation of blood vessels and decrease in blood pressure
What is the formula for ventilation (V) ?
V = respiratory rate (RR) x tidal volume (TV)
What is a-VO2 difference?
The difference in arterial and venous blood
What is the formula for a-VO2 difference
a-VO2 diff = arterial mL/100mL - venous mL/100mL
