Circuitry of the Cardiovascular System Flashcards
(24 cards)
The pulmonic circulation has a ____ (lower, same, higher) resistance, afterload, and stroke work compared to systemic circulation
Lower
At rest, the cardiac output is ___ L/min
5L/min
Max CO = 20L/min (non-athlete)
Max CO = 30L/min (athlete)
THe blood flow per 100g tissue is greatest in what organ?
Kidneys
What is the formula for the CO
CO = HR x SV
CO = VR
____ is the site of greatest resistance
arterioles
This has the largest total cross-sectional area and the slowest blood flow velocity
capillaries
___ and ____ control blood flow
metarterioles and pre-capillary sphincter
_____ are called capacitance vessels since it has greater distensibility and compliance
Veins
Another name for the right atrial pressure
Central venous pressure
What is the cardiac output at rest?
5L/mon
The maximum CO of a non-athlete
20L/min
The maximum CO of a athlete
30L/min
The CO of the L heart is also equal to the ____ blood flow
systemic blood flow
The CO of the R heart is also equal to the ____ blood flow
pulmonary blood flow
Contains the stressed volume
arteries
the blood flowing here has a high pressure
arteries
higher cross sectional area
lower blood flow velocity
gas exchange
capillaries
____ control blood flow
metarterioles
pre-capillary sphincters
how many percent of blood are found in the veins
64%
____ are capacitance vessels
64%
greater capacitance greater distensibility, greater compliance
veins
area with the slowest blood flow velocity
capillaries
The right atrial pressure is also called ____ pressure
central venous pressure
the site at which the systolic pressure is highest
renal artery
