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Flashcards in CV overview Deck (19)
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1
Q

Water makes up what weight of the body?

A

60%

2
Q

What are the 2 divisions of Fluids?

A

Intracellular (ICF) 40%

Extracellular (ECF) 20%

3
Q

What makes up the Intracellular fluid (ICF)?

A

Fluid within the cells

4
Q

What makes up the extracellular fluid?

A

Interstitial fluid

Plasma (Fluid portion of blood and lymph)

5
Q

What is the primary role of the CV system?

A

Maintain the homeostasis of interstitial fluid!

6
Q

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

A

Interstitial fluid

- not big and

7
Q

What CV circuit is in series?

A

Pulmonary

Systemic

8
Q

What makes up the Parallel circuit?

A

Organs

- Flow through one can be independent of another

9
Q

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

A

5-6liters

- Flow (Q)

10
Q

What is the equation for flow?

A

Q=^P/R

Flow= Pressure diff/resistance

11
Q

What are the physical factors that affect resistance?

A
  1. Length
  2. Radius
  3. Viscosity

R=8Ln/pie*r^4

12
Q

What is Poiseuille’s Equation?

A

Q= ^Ppier^4/8Ln

13
Q

What is the change of pressure across all organs?

A

Identical- they are in parallel

14
Q

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

A

Coronary ostia

- in the cups of the aortic valve

15
Q

What are the AV valves?

A

Atrio-ventricular valves

  • Tricuspid (right)
  • Mitral (left) aka bicuspid
16
Q

What are the Semilunar valves?

A

Aortic and Pulmonary

  • 3 cuplike leaflets
  • no Chordae tendinae or pappilary muscle
17
Q

What is a syncytium and what does it mean?

A

A connected mass

- cells of cardiac muscle can depolarize their neighbor cells

18
Q

What connects the right atrium to the left SA node?

A

Bachmann’s Bundle

19
Q

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

A

Internodal tracts

- not necessary but increases efficiency