Laws

Question 0

Dalton’s law

Answer 0

States that the total pressure of a mixture of gases is the sum of the pressures exerted by the individual gases in the same volume
This is known as partial pressure

Question 1

Law of Laplace

Answer 1

States that the tension in the blood vessel walls is necessary to withstand transmural pressure and is influenced by both vessel radius and wall thickness

Question 2

Henry’s law

Answer 2

States that the volume of gas to dissolve in a solvent is proportional to the solubility of the gas and the gas pressure

Question 3

Ficks law

Answer 3

States that the rate of diffusion across a tissue is directly proportional to the area, diffusion constant and pressure difference and inversely proportional to the tissue thickness

Question 4

Frank-starling law of the heart

Answer 4

States that as the degree of stretch of the heart increases(due to increases in blood volume) there is an increase in the force of contraction of the heart

Question 5

Boyles law

Answer 5

States that gas pressure is inversely proportional to volume

Question 6

Darcy’s law

Answer 6

States that flow is linearly proportional to the pressure difference between 2 points

Question 7

Pouseuilles law

Answer 7

States that’s the steady flow along a cylindrical tube is directly proportional to the fluid velocity and the tube length and inversely proportional to the tube radius raised to the 4th power

• therefore a small change in vessel radius confers a large change in resistance

Question 8

Bernoulli’s theory

Answer 8

States that the flow between points A and B is proportional to the difference in the fluids mechanical energy between points A and B