Purpose
Is circulation a vital function?
Yes, circulation is a vital function.
What is the venous return?
the amount of blood that is returned to the heart by the veins
What two functions do circulation control mechanisms accomplish?
Maintain circulation and vary the volume and distribution of the blood circulated
Why does a fluid flow?
Because a pressure gradient exists between different parts of its volume
What emotion can slow one's heart rate?
Grief slows heart rate.
What is the purpose of taking someone's blood pressure?
To measure the amount of air pressure equal to the blood pressure in an artery.
Can gravity influence the venous return? (Yes/no)
Yes!
What is the main function of circulation?
It’s the only way for cells to receive materials needed for survival.
What is a pressure gradient?
blood pressure in one structure and the blood pressure in the other
What emotions increase heart rate?
Anxiety, fear, and anger all increase heart rate.
How does circulation help cells?
Circulation is the only way cells can receive materials, like oxygen and nutrients, to replace what is consumed and remove their waste.
What is the orthostatic effect?
The shift of the blood reservoir to the leg.
A constellation of different circulation mechanisms acts together as one integrated mechanism? (True/False)
True
What is the amount that the CO can increase above the resting value called?
Cardiac reserve
What types of factors can change one’s heartbeat?
Chronotropic
Why does blood circulate?
Circulation replaces nutrients and removes waste from cells.
What does ADH stand for?
Anti-diuretic hormone
What is the name of the mechanisms that influence the active and changing circulation of blood?
Hemodynamics
When does the greatest drop in pressure occur?
As the blood goes through the arterioles
How is the blood gravity when reclining?
The blood gravity is equal
How would standing still affect the pressure gradient and make you uncomfortable?
By standing still the blood is accumulating in the veins because the skeletal muscles are not contracting and squeezing it upward.
what is ANH (Atrial Natriuretic hormone) specialized in?
They are specialized in the trial wall in response to overstretching
What is the definition of Cardiac Output?
The amount of blood that flows out of a ventricle of the heart per minute
What are P1 and P2 representations?
P1 is for higher pressure and P2 is for lower pressure.
What does a change in arterial blood pressure initiate?
A vasomotor pressoreflex