Biomedical Engineering 403

Review of Respiration Topics

Hey, there, campers.

El Duggo here.

It's 1:40 in the a.m. on Thursday. I've been here, typing, since class got out. Only about 17 people turned in their extra credits, and I've entered most of the ones that I can. I'll continue tomorrow afternoon. If you sent in your extra credit work, and you don't see it posted, and you didn't hear from me saying that I'd received it, please e-mail me and let me know. Good luck on Friday.

-jdm

Today, Dr. Z. reviewed all of the topics he considered most important. For those of you who stayed for the entire thing, be glad and rejoice, for he spouted off most if not all of the anwsers to the exam.

I list below most of the topics he mentioned explicitly. Since he took the time to mention them in this review, I suggest that it would be highly worth your while to know them.

(Some of these topics will not be complete until all the extra credit assignments are turned in)

• Partial Pressures of Gases

• The Ideal Gas Law

• Converting to and from STPD and BTPS
  (Note: Earlier, Dr. Z. stated that BTPS pressure is ALWAYS 760 mmHg. He is now stating that BTPS pressure is WHATEVER THE AMBIENT PRESSURE IS.)

• Spirometers and what they do

• Lung Volumes , particularly the following:

  • Vital Capacity

  • Total Lung Capacity (typically around 6 Liters)

  • Tidal Volume (Vt)

  • Functional Residual Capacity (FRC)

  Know not only how to recognize these terms on a diagram, but more to the point what they mean and how they can be measured.

• Body Plethysmograph

• Dead Space, both

  • Anatomical (Vads)

    and

  • Conductive (Vcds)

  And since those assignments have not been turned in, I suggest that for information on dead space, you check out Bohr's equation.

• Bohr's Formulas

• Fick's Law

• Ventilation/Perfusion Ratio

• Respiratory Exchange Quotient (R)

• Hemoglobin

• Two ways that oxygen is carried in blood:

  • Dissolved in plasma, in accordance with Henry's Law

  • Bound to Hemoglobin (Hb)

• Three ways that CO2 is carried in blood:
  • Dissolved in plasma, in accordance with Henry's Law

  • Carbamino Compounds

  • In the form of Bicarbonate

• The O2 Dissociation Curve and Saturation Equation

• 2, 3 Diphosphoglyceride (2,3-DPG)

• Buffer Lines and Davenport Diagrams

• Respiratory Acidosis

• Respiratory Alkalosis

• Metabolic Acidosis

• Metabolic Alkalosis

• pH

• The Henderson-Hasselbach Equation

• Compliance , due to the elastic properties of the repiratory system

• Resistance to airflow

• Elastic and Resistive work (Elastic is recoverable, resistive is not)

  Also, know that the following stuff contributes to the elasticity of the pulmonary system:

  • collagen

  • elastin

  • Surfactant

• Chemoreceptors

• Exercise and Respiration , and the mystery of how ventilation increases immediately upon the onset of exercise (one of Dr. Z's favorite topics).

Understand all of these topics, and you should do good on Friday.

Good Luck!

No!
Please don't make me go to any of those pages!
I want to go somewhere completely different!