Regulation of blood pressure Flashcards
How would you calculate cardiac output?
Blood flow in volume divided by time
What is ESV?
end systolic volume/ volume of ventricle right after contraction
What is EDV?
end diastolic volume/ volume of ventricle right before contraction
What is peripheral resistance?
resistance in the circulatory system that is used to create blood pressure
What is systolic blood pressure?
The maximum arterial blood pressure in humans during heart contraction
What is diastolic blood pressure?
The minimum arterial blood pressure during heart relaxation
Why do smaller animals have a higher heart rate?
They have smaller vessels and therefore there is more resistance
How do baroreceptors work?
They detect pressure, increased pressure causes increased stretch which causes more rapid AP firing,, this in turn decreases the contractility of the heart
Where are the most important baroreceptors found?
In the carotid artery
What are the two different types of baroreceptors?
Carotid sinus baroreceptors and Aortic arch baroreceptors
What do carotid sinus baroreceptors detect?
changes in pressure to the brain
What do aortic arch baroreceptors detect?
they detect changes in pressure in the body
Where are peripheral chemoreceptors found?
In carotid and aortic bodies
What is the function of veno-atrial mechanoreceptors?
they respond to changes in central blood volume
What is the function of unmyelinated mechanoreceptors?
They respond to distension in the heart
