Bioengineering Physical Constants and Conversion Factors

Flashcards covering physiological constants, gas properties, temperature scales, and molecular parameters from the engineering reference sheet.

Typical mammalian cell diameter

$$10\,\mu\text{m}$$

Whole blood volume

$5\,\text{L}$ (resting cardiac output = $5\,\text{L/min}$)

Total lung capacity

$$6.0\,\text{L}$$

Tidal volume

$$0.500\,\text{L}$$

Breathing frequency

$$12\,\text{breaths/min}$$

Systemic blood pressure

$$120/80\,\text{mmHg}$$

Absolute pressure equation

$$P_A = P_{\text{atm}} + P_g$$

Room temperature

$25^\circ\text{C}$ ($298\,\text{K}$)

Body core temperature

$37^\circ\text{C}$ ($310\,\text{K}$)

Composition of dry air by volume and mole percentage

$79\%\,\text{N}_2$, $21\%\,\text{O}_2$

Composition of dry air by weight percentage

$76\%\,\text{N}_2$, $24\%\,\text{O}_2$

Molar volume of ideal gas ($1\,\text{g-mol}$ at $0^\circ\text{C}$, $760\,\text{mm Hg}$)

$$22.4\,\text{L}$$

Molar volume of ideal gas ($1\,\text{lb-mol}$ at $32^\circ\text{F}$, $14.7\,\text{psia}$)

$$359\,\text{ft}^3$$

Average molecular weight of an amino acid

$$135$$

Molecular weight of dry air

$$28.84$$

Average molecular weight of a DNA base pair

$$610$$

Molecular weight range of proteins

$5000$ to $3 \times 10^6$

Fahrenheit to Celsius temperature conversion formula

$$^\circ\text{F} = 1.8(^\circ\text{C}) + 32$$

Rankine temperature conversion formula

$$^\circ\text{Rankine} = ^\circ\text{Fahrenheit} + 460$$

Kelvin temperature conversion formula

$$\text{Kelvin} = ^\circ\text{Centigrade} + 273$$

Temperature change equivalence

$$1.0\,\Delta^\circ\text{C} = 1.8\,\Delta^\circ\text{F}$$