MT Ch. 7-Respiratory Flashcards Preview

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Flashcards in MT Ch. 7-Respiratory Deck (96)
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1

What structures comprise the respiratory system?

nasal cavity, pharynx, larynx, trachea, bronchial tubes, lungs

2

Three parts of the process of respiration

ventilation, external respiration, and internal respiration

3

ventilation

flow of air between outside environment and lungs

4

inhalation

flow of air into lungs, brings oxygen in

5

exhalation

flow of air out of lungs, removes carbon dioxide from body

6

external respiration

exchange of oxygen and carbon dioxide that takes place in the lungs. oxygen enters bloodstream from lungs, carbon dioxide leaves the bloodstream and enters lungs

7

internal respiration

exchange of oxygen and carbon dioxide at the cellular level. oxygen leaves the bloodstream and is delivered to tissues, and carbon dioxide (formed from metabolism) enters bloodstream from tissues and is transported back to lungs

8

nares

two external openings in nose where air enters

9

nasal septum

cartilaginous plate that divides the nasal cavity in half

10

palate

roof of the mouth; separates nasal cavity from the mouth

11

mucous membrane

covers walls of nasal cavity, nasal septum, and most of the respiratory tract. secretes mucus

12

mucus

sticky fluid secreted by mucous membrane that traps dust and bacteria in the air and moisturizes inhaled air

13

cilia

very small hairs that line the opening of the nose and much of the airways. filter out large dirt particles before they can enter the lungs

14

paranasal sinuses

air filled cavities located within the facial bones. give resonance to voice during sound production

15

three parts of the pharynx

nasopharynx (upper), oropharynx (middle), laryngopharynx (lower)

16

function of tonsils

keep pathogens from entering the body

17

adenoids/pharyngeal tonsils

located in nasopharynx behind the nose

18

palatine tonsils

located in oropharynx behind the mouth

19

lingual tonsils

located in oropharynx behind the mouth

20

eustachian tube

auditory tube, opening found in nasopharynx. the other end is in the middle ear. it opens to equalize air pressure between the middle ear and outside

21

vocal cords

located in the larynx. folds of membranous tissue that produce sound by vibrating as air passes through the glottis

22

glottis

opening between the two vocal cords

23

epiglottis

flap of cartilaginous tissue above the glottis that keeps food and liquid from being inhaled into the lungs

24

thyroid cartilage

one of the cartilages that lines the walls of the larynx. forms the adam's apple. larger in males and helps produce deeper voice

25

larynx

located between pharynx and trachea

26

trachea

passageway for air that extends from pharynx and larynx down to main bronchi

27

bronchus

tube that enters one of the lungs; left and right

28

bronchioles

narrowest branches of bronchi, end in a small group of air sacs

29

alveoli

small group of air sacs at the end of a bronchiole; 150 million in each lung

30

pulmonary capillaries

capillaries from the pulmonary blood vessels that encase the alveolus