03/06 Flashcards

1
Q

Lungs are located within the

A

Thoracic cavity

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2
Q

Heart is located between the lungs in the

A

Pericardial sac

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3
Q

How many lobes does the left lung have?

A

Two

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4
Q

How many lobes does the right lung have?

A

Three

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5
Q

The respiratory tract is an open body cavity, so it is lined with

A

Mucous membranes

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6
Q

Thoracic cavity is a closed body cavity, so it is lined with

A

Serous membranes

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7
Q

What is the serous membrane that surrounds the lungs?

A

Pleura

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8
Q

The Visceral Layer of the lung lies

A

Against the lung

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9
Q

The Parietal Layer of the lung lines

A

The body cavity

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10
Q

Serous membranes are

A

Double membranes with empty space in between, or the pleural cavity

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11
Q

Body cells need Oxygen for

A

Cellular respiration (to make ATP)

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12
Q

What are the four parts of respiration?

A
  1. Pulmonary Ventilation
  2. Alveolar Gas Exchange
  3. Gas Transport
  4. Systemic Gas Exchange
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13
Q

What happens during Pulmonary Ventilation?

A

Air containing O2 moves into lungs, whereas CO2 air leaves lungs

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14
Q

What are the two steps of Pulmonary Ventilation?

A
  1. Inspiration

2. Expiration

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15
Q

What happens during Alveolar Gas Exchange?

A

There is gas exchange at respiratory membrane in the alveoli

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16
Q

With what does diffusion happen with in Alveolar Gas Exchange?

A

In body cells, with O2 diffusing into and CO2 diffusing out

17
Q

The Circulatory system kicks in during which step of respiration?

A

Gas Transport

18
Q

Gas Transport involves

A

Blood being moved around the body

19
Q

Systemic Gas Exchange is

A

Gas exchange at body tissues

20
Q

What is Boyle’s Law?

A

PiVi = P2V2

21
Q

Air moves down the pressure gradient from

A

High pressure to low pressure

22
Q

When you breathe in, the volume of lungs

A

Increases

23
Q

Diaphragm will contract when

A

You inspire

24
Q

What happens when the diaphragm contracts?

A
  • It will move down and extend ribs

- Increases volume of thoracic cavity

25
Q

The Pleural cavity of lungs will cause for

A

Lung expansion during inspiration

26
Q

Gas exchange within the body can be

A
  • Alveolar

- Systemic

27
Q

Alveolar gas exchange happens between

A

Gases in blood capillaries and gas in alveolus

28
Q

Systemic gas exchange happens between

A

Body tissues and capillaries

29
Q

What is Dalton’s Law?

A

Ptotal = P1 + P2

30
Q

Henry’s Law states that the solubility of a gas in a liquid depends on

A
  • Partial pressure of the gas in the air

- Solubility coefficient of the gas in the liquid

31
Q

The amount of CO2 will enter body depends on

A
  • Pressure gradient

- Solubility of CO2

32
Q

Gases leave solution faster in

A

Warmer temperatures

33
Q

Oxygen goes from alveoli into blood capillaries due to

A

Partial pressure gradient

34
Q

What is the partial pressure in alveoli?

A

104 mmHg

35
Q

What is the partial pressure in capillaries?

A

40 mmHg