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Flashcards in Ch 23 Respiratory Deck (130)
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1

What is respiration?

Continuous exchange of oxygen and carbon dioxide - between atmosphere and body cells

2

What systems contribute to respiration?

Respiratory, Skeletal, Muscular, Nervous, Cardiovascular

3

How does the Respiratory System contribute to respiration?

Responsible for exchange of gases between atmosphere and lungs

4

How do the Skeletal and Muscular Systems contribute to respiration?

Alter the volume and pressure in thoracic cavity to facilitate movement of air in/out of lungs

5

How does the Nervous System contribute to respiration?

stimulates and coordinates contraction of muscles for breathing

6

How does the Cardiovascular System contribute to respiration?

Transports Oxygen and Carbon Dioxide between lungs and cells

7

What are the 4 functions of respiratory system?

Air passageway
Site for exchange of gases
Detection of odors
Sound production

8

What are the two divisions of the respiratory system?
What are each of their 2 corresponding divisions?

STRUCTURAL ZONE
-Upper Respiratory Tract
- Lower Respiratory Tract

FUNCTIONAL ZONE
-Conducting zone
- Respiratory Zone

9

STRUCTURAL ZONE
what structures belong where?

Upper respiratory tract - 3
-Nose/Nasal Cavity/Pharynx

Lower Respiratory tract - 6
-Larynx/Trachea/Bronchi/Bronchioles/Alveolar Ducts/Alveoli

10

FUNCTIONAL ZONE
what structures belong where?

CONDUCTING ZONE
- passageways that transport or conduct air
- from nose to the end of terminal bronchioles

RESPIRATORY ZONE
- Structures that participate in gas exchange with the blood
- respiratory bronchioles, alveolar ducts, alveoli

11

Describe mucosal lining of the respiratory passageway.

- Gets progressively thinner from the nasal cavity to alveoli
- Mucous membrane consists of: (mucus on top) epithelium, basement membrane & lamina propia
-contains goblet cells

12

What is the pathway of air from nose to alveoli? 8

Nose/Nasal Cavity --> Pharynx --> Trachea --> Main Bronchi --> Lobar Bronchi --> Segmental Bronchi --> Bronchioles (ending in terminal bronchioles) --> Alveoli (site of gas exchange)

13

What is the nose composed of?

bone, hyaline cartilage, dense irregular connective tissue, covered with skin

14

What forms the bridge of nose?

paired nasal bones

15

Describe the supporting bridge of the nose

1 pair of lateral cartilages (mid area of nose beside bridge)

2 pairs of alar cartilages (on both sides) (1 pair right under lateral & 1 pair on outer nostril/nose tip)

16

What are the nostrils?

The opening into nasal cavity

17

Describe nasal cavity shape

oblong-shaped

extends from nostrils to CHoanae

18

What is on the floor of the nasal cavity?

hard palate (1st) and soft palate (further back)

19

What bones (in order) make up the roof of the nasal cavity?

Nasal / Frontal/ Ethmoid / Sphenoid

20

Describe the nasal septum

Divides nasal cavity into left and right sides

formed by septal nasal cartilage

21

What are the 3 regions of the nasal cavity?

Nasal Vestibule (tip of nose)
Respiratory Region (largest/main)
Olfactory region (small/atop resp. region)

22

Describe the conchae and meatus structures, of the nasal cavity

COnchae = lateral walls on each side

Meatus = are the valleys within the conchae walls

23

Functions of COnchae and Meatus

COnchae = produce turbulence in the inhaled air

Meatus = drainage

24

Describe the functions of the 3 regions of the nasal cavity

Nasal Vestibule: lined by Vissabrae (skin & coarse hairs) that trap large particles

Respiratory Region: Passage for which air enters respiratory system (contains conchae/meatus)

Olfactory region: the receptors detects diff odors

25

What is the function of the Choanae/

"doorways" from nasal cavity to pharynx

26

Describe layout of tonsils

Pharyngeal tonsil (highest)
Tubal Tonsils
Palatine Tonsil
Lingual Tonsil (lowest)

27

What is the function of the tonsils in respiration?

trap germs and bacteria we breathe in

28

What is the major function of the Nasal Cavity?

warm, moisture/humidfy, and filter//cleanse air entering the body before it reaches lungs

Hair and mucus lining the nasal cavity trap dust/mold/pollen/other before they can enter body

29

What is the function of the nose?

Entrance for air
hair cleans the air of foreign particles

30

What are the 4 Paranasal Sinuses

Frontal Sinus (middle forehead)
Ethmoidal Sinus (inner portion of eyelid)
Sphenoidal Sinus (outer portion of eyelid)
Maxillary Sinus (to sides of nose)