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Flashcards in CV overview Deck (19):
1

Water makes up what weight of the body?

60%

2

What are the 2 divisions of Fluids?


Intracellular (ICF) 40%
Extracellular (ECF) 20%

3

What makes up the Intracellular fluid (ICF)?

Fluid within the cells

4

What makes up the extracellular fluid?

Interstitial fluid
Plasma (Fluid portion of blood and lymph)

5

What is the primary role of the CV system?

Maintain the homeostasis of interstitial fluid!

6

What is the source of nutrients and waste in the body? Whats it down side?

Interstitial fluid
- not big and

7

What CV circuit is in series?

Pulmonary
Systemic

8

What makes up the Parallel circuit?

Organs
- Flow through one can be independent of another

9

What is the average CO and what is it also called?

5-6liters
- Flow (Q)

10

What is the equation for flow?

Q=^P/R
Flow= Pressure diff/resistance

11

What are the physical factors that affect resistance?

1. Length
2. Radius
3. Viscosity

R=8Ln/pie*r^4

12

What is Poiseuille's Equation?

Q= ^P*pie*r^4/8Ln

13

What is the change of pressure across all organs?

Identical- they are in parallel

14

What are the holes of which coronary arteries leave the aorta?

Coronary ostia
- in the cups of the aortic valve

15

What are the AV valves?

Atrio-ventricular valves
-Tricuspid (right)
-Mitral (left) aka bicuspid

16

What are the Semilunar valves?

Aortic and Pulmonary
- 3 cuplike leaflets
- no Chordae tendinae or pappilary muscle

17

What is a syncytium and what does it mean?

A connected mass
- cells of cardiac muscle can depolarize their neighbor cells

18

What connects the right atrium to the left SA node?

Bachmann's Bundle

19

What connect the SA and AV nodes? is it needed?

Internodal tracts
- not necessary but increases efficiency