CV overview Flashcards
Water makes up what weight of the body?
60%
What are the 2 divisions of Fluids?
Intracellular (ICF) 40%
Extracellular (ECF) 20%
What makes up the Intracellular fluid (ICF)?
Fluid within the cells
What makes up the extracellular fluid?
Interstitial fluid
Plasma (Fluid portion of blood and lymph)
What is the primary role of the CV system?
Maintain the homeostasis of interstitial fluid!
What is the source of nutrients and waste in the body? Whats it down side?
Interstitial fluid
- not big and
What CV circuit is in series?
Pulmonary
Systemic
What makes up the Parallel circuit?
Organs
- Flow through one can be independent of another
What is the average CO and what is it also called?
5-6liters
- Flow (Q)
What is the equation for flow?
Q=^P/R
Flow= Pressure diff/resistance
What are the physical factors that affect resistance?
- Length
- Radius
- Viscosity
R=8Ln/pie*r^4
What is Poiseuille’s Equation?
Q= ^Ppier^4/8Ln
What is the change of pressure across all organs?
Identical- they are in parallel
What are the holes of which coronary arteries leave the aorta?
Coronary ostia
- in the cups of the aortic valve
What are the AV valves?
Atrio-ventricular valves
- Tricuspid (right)
- Mitral (left) aka bicuspid
