Respiratory System** Flashcards Preview

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Flashcards in Respiratory System** Deck (69)
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1

Smallest conducting respiratory passageways

Bronchioles

2

Separates the oral and nasal cavities

Palate

3

Major nerve that stimulates the diaphragm

Phrenic nerve

4

Food passageway posterior to the trachea

Esophagus

5

Closes off the larynx during swallowing

Epiglottis

6

Windpipe

Trachea

7

Actual site of gas exchange

Alveoli

8

Pleural layer covering the thorax walls

Parietal pleura

9

Pleural layer covering the lungs

Visceral pleura

10

Lumen of the larynx

Glottis

11

Fleshy lobes in the nasal cavity which increase its surface area

Conchae

12

Pressure of air outside the body

Atmospheric pressure

13

What is the general function of the respiratory system?

Transport gases to and from the circulatory system

14

Exchanges gases

Respiration

15

Breakdown of glucose in the body using oxygen

Cellular respiration

16

How many lobes does the right lung have? Left?

3; 2

17

A double membrane surrounding the lungs; secretes a mucus that decreases friction

Pleura

18

Why are ribs expandable?

They aren't completely ossified

19

What are the 7 openings in the throat cavity?

1 to esophagus, 1 to larynx, 1 to mouth, 2 nasal passages, 2 eustachian tubes

20

What are the functions of the nostrils?

Filter out dust, warm and moisten air

21

What are the 3 actions to inspiration?

Ribs expand, diaphragm down, pressure decreases

22

What are the 3 actions to expiration?

Ribs contract, diaphragm up, pressure increases

23

What is the regular breathing rate?

12-24 breaths/minute

24

What controls your breathing rate?

Medulla

25

How does high levels of carbon dioxide affect your breathing rate?

Causes you to inhale and exhale faster

26

What is the respiration flow?

Nose/throat, larynx, trachea, bronchi, bronchioles, alveoli, blood, cells

27

Tiny sacs where oxygen and carbon dioxide are exchanged

Alveoli

28

Maximum amount of air that the lungs can hold

Maximum lung capacity

29

Maximum amount of air that a person can inhale/exhale

Vital lung capacity

30

What are the percentages of nitrogen, oxygen, and carbon dioxide that you inhale?

78%, 21%, .04%