Systemic&Pulmonary Circulation Part 3 Flashcards
If the aortic pressure is increased, then the cardiac output ________, the TPR _________, or both
Increased x 2
Making an accurate measurement of a mean vascular pressure requires inserting a needle or a catheter into the ______ of interest
Vessel
Naturally occurring _________ is rate in veterinary species
Hypertension
Hypertension is normal cardiac output and ________ blood pressure and TPR
Elevated
Serve hemorrhage or dehydration are results of:
__________ cardiac output = ________ blood pressure
TPR: _______ because the body constricts the arterioles in the kidneys, splanchnic circulation, and resting skeletal muscle
Decreased x 2
Increased
What minimizes the fall in arterial pressure in kidneys, splanchnic circulation and resting skeletal muscle?
Vasoconstriction
Responses to vigorous exercise:
Cardiac output is ________ by fourfold
TPR is ________ by 1/4 of resting value because the articles in the exercising muscles dilate, which increases skeletal blood flow
Elevated
Decreased
During vigorous exercise the aortic pressure is _________ changed
Negligibly
The pulmonary resistance is calculated as a pressure difference divided by _____
Flow
The perfusion pressure that forces blood through the pulmonary circuit is the pressure in the pulmonary artery minus the pressure in the pulmonary _____
Veins
What is the pulmonary resistance?
3.2mm Hg/L/min
During exercise, the resistance of the pulmonary vessels ____ greatly, which is advantageous because it allows the pulmonary flow to increase without necessitating a large increase in the pulmonary arterial pressure
DROPS
Blood pressure within the aorta and pulmonary artery is not constant but rather ________
Pulsatile
Low pulse pressure is referred to as ______, or _____, pulse
Thready
Weak
High pulse pressure may be called _______, or ______, pulse
Bounding
Strong