Lecture 1 Final Flashcards
What does the kidneys do?
- Transport nutrients to tissues
- Transport wastes from tissues
- Hormone signaling
volume for kidneys
Liters
Velocity for kidneys
m/sec
Pressure /force for kidneys
mmHg
Internal diameter?
Cross sectional area
blood flow
volume/min
(ex. ml/min)
Vascular resistance =
ex. blood pressure
What do you get when you measure pressure between the source and the high resistance?
High pressure
If you measure the pressure below the high resistance/choke point, what kind of pressures do you get?
Low pressure
inverse of vascular resistance (pressure)
vascular conductance (free flow)
Poisseulle’s law
helps measure resistance
How much percent of systemic circulation does the veins hold?
84%
Pulmonary circulation hold about ______ % of systemic circulation?
9%
Heart circulation of the total system?
7%
Controls how much fluid we have in our body. “Big filter”
Kidneys
If you connect 2 tubes together, what happens to the resistance?
increase Twice as much.
What is a system called “parallel”
More choices of tubes to choose from that leads to lowest resistance.
Measurement for total resistance
RTotal = R1+R2+R3+R4
Where do we have only 1 tube in the whole circuit?
Aorta
How does the x-sectional area help with determining the velocity of blood flow of smaller tubes?
The more tubes leads to the total x-sectional area adds up to a really big number.
The furthest away from the heart the tubes get smaller and more quantity, leading to
a low velocity of flow
T/F: Left atrium has low pressures
True
How are pressures in the aorta?
High pressures
How are pressures in the ventricles?
High pressures
