Final

Question 1

Ohm’s Law

Answer 1

V= IR (voltage= current x resistance)

also describes if flow decreases, resistance increases

Question 2

Reynold’s number

Answer 2

predicts laminar vs turbulent flow

Question 3

Pascal’s Principle

Answer 3

if you have confined fluid at a given pressure, and external pressure is applied, the pressure is transmitted unchanged to every point within the fluid

Question 4

2nd law of thermodynamics

Answer 4

thermal contact between two bodies transfers heat from hot to cold

Question 5

kinetic energy

Answer 5

energy of motion

Question 6

potential energy

Answer 6

stored energy

Question 7

A bourdon guage used a coiled to tube to

Answer 7

measure the pressure difference b/t the pressure exerted by a gas in a cylinder at atmospheric pressure

Question 8

element important for CNS stability

Answer 8

Sodium

Question 9

Bernoulli’s equation

Answer 9

As speed of fluid increases, pressure exerted by the fluid decreases

Question 10

Pouisselle’s Law

Answer 10

• describes how flow of fluid through a tube works;
• why a polycythemic patient has decreased blood flow through tissue
• anemic patient has increased flow through tissues

Question 11

Laplace’s Law

Answer 11

explains why surface tension on a blood vessel wall depends on the radius of a vessel

Question 12

Flow is dependent on a pressure difference over the length of the tube

Answer 12

True

Question 13

When flow is laminar, decreasing the radius of a tube by 1/3 will decrease flow

Answer 13

-by 1/81 of original value

Question 14

Graham’s Law

Answer 14

rate of diffusion or effusion of a gas is inversely proportional to its molecular weight

Question 15

Boyle’s Law

Answer 15

P1V1=P2V2,

Example: squeezing bag valve mask, diaphragm contraction increases tidal volume

Question 16

Guy-Lussac’s Law

Answer 16

P/T

Example: oxygen tank explodes in heated environment

Question 17

Charle’s Law

Answer 17

V/T

Example: LMA cuff ruptures when placed in autoclave

Question 18

Henry’s Law

Answer 18

• at a constant temperature, the amount of gas dissolved in solution is directly proportional to the partial pressure of that gas over solution
• increase temp=decrease solubility
• decrease temp= increase solubility

Question 19

Fick’s Law of diffusion

Answer 19

• describes transfer rate of gas through a tissue

- application: diffusion hypoxia (N20), drug transfer across placenta, calculation of cardiac output

Question 20

Math and Units Review

Answer 20

Kilo = 10*3
Centi= 10*-2
Milli= 10*-3
Micro= 10*-6