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AVMED > Exam Study Notes > Flashcards

Exam Study Notes Flashcards

1
Q

What altitude is the physiological zone?

A

MSL - 10,000ft

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2
Q

How does atmospheric pressure work?

A

It increases closer to sea level and decreases the higher you go in altitude

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3
Q

What is the law of gaseous diffusion (Graham’s law)

A

Gas molecules will diffuse through a permeable membrane from and area of high pressure to one of low pressure.

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4
Q

What is Boyle’s law?

A

It states that the volume of a gas is inversely proportional to the pressure, temperature remains constant.

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5
Q

What is Henry’s law?

A

At a constant temperature, the amount of gas dissolved in a solution is directly proportional to the partial pressure of that gas over the solution.

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6
Q

What is Dalton’s law?

A

Danton’s law states that the total pressure of a mixture of gases is equal to the sun of the partial pressure of each of the constituent gasses in the mixture.

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7
Q

What is Charles’ law?

A

It states that the volume of a gas varies directly with the temperature at a constant pressure

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8
Q

What direction does red blood travel in regards to the heart?

A

Red blood travels away from the heart

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9
Q

What direction does purple/blue blood travel in regards to the heart?

A

They travel to the heart and is then oxygenated and pushed out as red blood back into the body.

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10
Q

What does the carbon dioxide in your body do?

A

Controls the rate and depth of breathing.

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11
Q

When are oxygen Chemoreceptors located?

A

In the carotid arteries and the aorta.

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12
Q

What are the 4 types of hypoxia?

A

Hypoxia hypoxia, hypaemic hypoxia, stagnate hypoxia and historicity hypoxia

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13
Q

What is hypoxic hypoxia?

A

Reduced diffusion of oxygen from the alveoli to blood.

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14
Q

What is hypaemic hypoxia?

A

Reduced ability of blood to transport oxygen

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15
Q

What is stagnant hypoxia

A

Reduced blood flow to the tissues

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16
Q

What is hystotoxic hypoxia?

A

The inability of cells to utilise oxygen.

17
Q

What is hypoxia?

A

The state of oxygen deficiency at tissue cell level sufficient to cause impairment of function.

18
Q

What are the signs and symptoms of hypoxia?

A

Personality change, loss of judgement, loss of self-criticism, euphoria, loss of short term memory, mental in coordination,

19
Q

What is the TUC at 25,00ft?

A

3-5 mins

20
Q

What are the causes of vibration in flight for fixed wing aircraft?

A

Turbulence, engines/props, high G, wing flexing, high speed.

21
Q

What are the causes of vibration in flight for a rotary wing aircraft?

A

Engines/transmissions, rotate, blade pass frequency, blade flap.

22
Q

What are the 2 types of photoreceptors in the eye?

A

Cones and rods.

AVMED (1 decks)

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