Physiology of Life and Death Flashcards

1
Q

What term describes the air in respiratory system that never reaches the alveoli?

A

Dead air space

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2
Q

What is the normal volume of dead air space?

A

150ml

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3
Q

What term describes the volume of oxygen consumed by the body in 1 minute?

A

oxygen consumption

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4
Q

What term describes the diffusion of oxygen form the RBCs into the tissue cells?

A

Internal (cellular) respiration

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5
Q

What are the two processes that make up metabolism?

A

glycolysis and krebs cycle

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6
Q

What occurs during glycolysis?

A

glucose is broken down to form two pyruvate molecules

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7
Q

What is produced by the Krebs cycle?

A

Energy and carbon dioxide

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8
Q

What are the three ways trauma can affect the respiratory systems ability to adequately provide oxygen and eliminate carbon dioxide?

A

Hypoxemia
Hypoxia
Hypoventilation

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9
Q

What term describes a decrease level of oxygen in the blood?

A

hypoxemia

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10
Q

What term describes deficient tissue oxygenation?

A

Hypoxia

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11
Q

What term describes as a state of generalized cellular function change from aerobic metabolism to anaerobic metabolism secondary to hypoperfusion of the tissue cells?

A

Shock

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12
Q

What organs have the greatest ischemic sensitivity?

A

Brain, heart and lungs (5-6 minutes before irreversible damage)

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13
Q

What principle is a description of the of the components necessary for oxygenation of the body cells?

A

Frick Principle

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14
Q

What three components make up the Frick Principle?

A

On-loading of oxygen to RBCs is the lung
Delivery of RBCs to tissue cells
Off loading of oxygen from RBCs to tissue cells

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15
Q

What are the three categories of shock?

A

Hypovolemic
Distributive
Cardiogenic

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16
Q

How much blood loss is representative of Class I hemorrhagic shock?

A

15% - up to 750mL

17
Q

How much blood loss is representative of Class II hemorrhagic shock?

A

15-30% - 750-1500mL

18
Q

List the pulse rate, BP, pulse pressure, respiratory rate and mental status seen in Class II hemorrhagic shock:

A
100-120 HR
Normal BP
Narrowed pulse pressure
20-30 RR
Mildly anxious
19
Q

How much blood loss is representative of Class III hemorrhagic shock?

A

30-40% - 1500-2000

20
Q

List the pulse rate, BP, pulse pressure, respiratory rate and mental status seen in Class III hemorrhagic shock:

A
120-140 HR
Decreased BP
Narrowed Pulse Pressure
30-40 RR
Anxious, confused
21
Q

How much blood loss is representative of Class IV hemorrhagic shock?

A

> 2000

22
Q

List the pulse rate, BP, pulse pressure, respiratory rate and mental status seen in Class IV hemorrhagic shock:

A
>140 HR
Decreased BP
Narrowed Pulse Pressure
>35 RR
confused, lethargic
23
Q

What part of the kidney is most sensitive to ischemia?

A

cells that make up the renal tubules