Respiratory #1 Flashcards
(201 cards)
What is the main function of the respiratory system?
To provide enough O2 for ATP production
What is ATP?
Adenosine triphosphate
Needed to produce energy for muscle fxn
What is lactic acid fermentation?
Produces ATP when there is not enough O2 available.
side effects are: muscle fatigue
soreness
pain
How many lobes does the rt lung have?
3 lobes
How many lobes does the lt lung have?
2 lobes
Lt lung is slightly smaller to make room for the heart
What is bulk flow?
Air moves in and out of the lungs from an area of high concentration of O2 to an area of low concentration of O2
What happens when the diaphragm goes down?
Inhalation
lungs expand bc there is lower pressure around the lung
What happens when the diaphragm goes up?
Exhalation
pushes air out bc there is higher pressure around the lungs
What is visceral pleura?
Serous membrane that covers the surface of the lungs
What is parietal pleura?
lines the inner surface of the chest wall, covers the diaphragm and is attached to the wall of the thoracic cavity
What is the pleural cavity?
Space bt the two pleura (visceral and parietal) of the lungs
Contains sm amt of pleural fluid to decrease friction
What is inhaled?
Components of the air around-O2, nitrogen, smoke and toxins
What is exhaled?
O2 and CO2
What does the nasal mucosa do?
Warms the air that is inhaled
What do the nasal hair do?
Cleans the air inhaled
Trace the flow of air into the lungs:
- Nares
- Nasal cavity/oral cavity
- Pharynx
- Larynx
- Trachea
- Rt and lt pulmonary bronchi
- Secondary bronchus
- Tertiary bronchus
- Bronchioles
10Alveoli
11And finally, gas exchange into lungs
Where is the larynx?
Inferior to the pharynx
What are the Eustachian tubes?
Tube that connects middle ear to nasopharynx
What are the purposes of the sinuses?
Affect vocal resonance-enhance the voice
Help regulate pressure in the head
What is the epiglottis?
- covers trachea
- elastic cartilage tissue flap covered with
mucus membrane - Attached to the entrance of the larynx
- Guards the entrance of the glottis-prevents food from going into the trachea
What is the soft palate?
Rises to block the nasopharynx when swallowing-preventing food from going into the nasopharynx
What is the trachea?
Tube that connects the larynx to the bronchial tree
What is dead air?
Air that remains in the lung after exhaling
Lower in O2
What is diffusion?
- When molecules move from area of hi concentration to area of low concentration until equilibrium is obtained
- O2 in alveoli must be kept at a higher level than in blood
- CO2 in the alveoli must be kept at a lower level than in blood