Respiratory System Flashcards
(28 cards)
Inspiration
-Active Process
-Air Drawn into lungs by negative pressure created by expanding the volume of the thoracic cavity
Expiration
-Passive Process
-Inspiratory muscles relax
Inspiratory Reserve Volume
Forcefully inhale
Expiratory Reserve Volume
Forcefully exhale
Tidal volume
Inhaling/exhaling w each breath at rest (like rn)
Residual volume
Air always remaining in lungs even after forcefully exhaling (ERV)
Inspiratory Capacity
The sum of tidal volume and inspiratory reserve volume
Functional residual capacity
The sum of residual volume and expiratory residual volume
Vital capacity
The sum of tidal volume, expiratory reserve volume, and inspiratory reserve volume
Total lung capacity
Sum of all lung volumes
Upper respiratory system
-Nose & Nasal Cavity
-Paranasal Sinuses
-Pharynx
Lower Respiratory System
-Trachea
-Bronchi and branches
-Lungs and alveoli
What is respiration?
O2 in and CO2 out
-Oxygen brought in body and elimination of Carbon Dioxide
External Respiration
The exchange of oxygen and carbon dioxide between lungs and the blood vessels. Oxygen goes into blood, while CO2 leaves.
In depth:
Inhaling and filling the lung alveoli with oxygen. Oxygen diffuses from the alveoli into the surrounding capillaries. At the same time, CO2 in the blood diffuses into alveoli. Exhale releases CO2
Transport of respiratory gases
The blood stream allows oxygen to be delivered to all the tissues of the body, and for CO2 from these tissues to be eliminated.
Internal Respiration
CO2 moves from the tissues into the blood and O2 moves from the blood into the tissues.
Cellular Respiration
The O2 is used along with glucose as fuel for chemical reaction. This reaction produces energy (ATP) for the body to use. Which is cellular respiration.
What zone is involved in gas exhange?
Respiratory Zone
Nasal Conchae
-Warms up air
-Humidifies and cleanses
Epiglottis
Flap of elastic cartilage that prevents food from entering the respiratory tract.
Uvula
Visible tear drop that prevents food from going into nasal cavity
Pharynx
Nasopharynx-TOP
Oropharynx-MIDDLE
Laryngopharynx-BOTTOM
Larynx
Help you breathe, speak (voice box), and keep food out of your lungs.
Trachea
The tube that carries air from the larynx down into the lungs, it continues downward until it reaches a point called the CARINA.