Breathing made Simple

Question 1

What is respiration?

Answer 1

combination of various physical and chemical processes by which oxygen is supplied to the living cell for its metabolic needs and carbon dioxide is removed

Question 2

Negative pressure ventilation

Answer 2

inspiration: active process based on pressure gradient created by MOR.
expiration: passive process based on the elastic recoil of lungs/chest wall.

Question 3

Oxygenation:

Answer 3

diffusion of molecules across a membrane

Question 4

normal breathing is driven by ________.

Answer 4

the co2 concentration in the blood (PaCO2), really its by pH.

Question 5

A 55 year old male with a history of alcohol abuse, tobacco abuse, and marijuana abuse is admitted the hospital for a fractured ankle. He is easily agitated with staff and faculty at the hospital as well as family. What should we investigate further?
A. Hypoxemia
B. Metabolic Acidosis
C. Hyperoxemia
D. Metabolic Alkalosis

Answer 5

Hypoxemia

Question 6

Which of the following is FALSE (Check all that Apply)?
A. Metabolic compensation for Primary Respiratory A/B Disturbance is Slow.
B. Respiratory compensation for Primary Metabolic A/B Disturbance is Slow.
C. Metabolic compensation for Primary Respiratory A/B Disturbance is Fast.
D. Respiratory compensation for Primary Metabolic A/B Disturbance is Fast.

Answer 6

B, C

Question 7

What type of pressure allows for normal breathing?
A. Positive
B. Negative
C. Isoaerial
D. Both A and B

Answer 7

Negative

Question 8

Which of the following processes of breathing are passively mediated?
A. Inspiration
B. Expiration
C. Inspiration and Expiration
D. Neither processes are passively mediated.

Answer 8

Expiration