Peripheral Vascular System - Nordgren

Question 1

What is the purpose of the CV system?

Answer 1

• Maintain interstitial fluid homeostasis.

- Continually bring nutrients to, and remove waste from, each and every cell in the body

Question 2

In what direction does blood flow?

Answer 2

From high pressure to low pressure.

-Pressure within various organs/tissue can be altered to regulate the flow of blood and specific needs

Question 3

What does Fick’s Principle determine?

Answer 3

How substances are transported via blood between the capillary bed in one location to another

Question 4

Capillaries are ___ exchange sites for ____ diffusion.

Answer 4

efficient, passive

Question 5

What four things does diffusion depend on?

Answer 5

1. Concentration difference
2. Surface area for exchange
3. Diffusion distance
4. Permeability of capillary wall to the substance

Question 6

What is hydrostatic pressure (P)?

Answer 6

Pressure of blood forcing fluid OUT of capillary

Question 7

What is oncotic pressure (P)?

Answer 7

Osmotic attraction of water IN to regions of higher protein concentration (capillary)

Question 8

Net fluid OUT of capillary (through pores) =

Answer 8

filtration

Question 9

Net fluid INTO capillary =

Answer 9

reabsorption

Question 10

What does Starlings Hypothesis describe?

Answer 10

Describes the relationship between opposing hydrostatic and oncotic forces on the net movement (Bulk Flow) of transcapillary fluid.
-Defined as either Filtration or Readsorption