short term effects of exercise Flashcards
what is the equation?
cardiac response
Q = SV x HR
what is diastole?
give the specific amount of seconds this lasts
heart relaxes and fills with blood - longest part of the cycle
0.5 seconds
what is systole?
give the specific amount of seconds this lasts
heart contracts and blood is ejected - shortest part of the cycle
0.3 seconds
explain pulmonary circulation in 3 statements
- deoxygenated blood
- pumped from heart to lungs and back
- via pulmonary artery to the lungs to become oxygenated
explain systemic circulation in 3 statements
- oxygenated blood
- from heart to body and back
- via the aorta to the body to release O2 and collect CO2
what is blood pressure?
pressure of the blood against the artery walls
what are the 3 types of receptors?
proprioreceptors
baroreceptors
chemoreceptors
what do proprioreceptors detect?
an increase in motor activity (movements in the muscles/tendons/ligaments)
what do baroreceptors detect?
blood pressure changes in arteries
what do chemoreceptors detect?
chemical changes in muscles, aorta + carotid arteries
- decrease in pH
- increase in pp CO2
- decrease in pp O2
what is anticipatory rise?
adrenaline from adrenalin glands stimulates the SA node which increase the heart rate before exercise
where is the CCC found?
in the medulla oblongata
what are the 2 types of nerves involved in the CCC?
what do they do to the heart rate?
sympathetic increase HR
parasympathetic decrease HR
explain the process in the CCC if movement has increased
the receptors detect the changes and sent information to the CCC
this increase the HR via the sympathetic nervous system
via the accelerator nerve
this speeds up the HR by stimulating the SA node
explain the process in the CCC if movement has decreased
the receptors detect the changes and sent information to the CCC
this decreases the HR via the parasympathetic nervous system
via the vagus nerve
this slows down the HR by stimulating the SA node
