Respiratory System Mod 9 Flashcards
What are the 2 basic functions of the respiratory system?
- Gas exchange
2. Air distribution
What organs are in the upper respiratory tract?
Nose, pharynx and larynx
What organs are in the lower respiratory tract?
Trachea, bronchial tree and lungs
What is respiratory mucosa?
Membrane that lines the air distribution tubes in the respiratory tree
Made up of goblet cells
What are the 4 sinuses?
- Frontal
- Sphenoid
- Maxillary
- Ethmodial
What are the 3 parts of the pharynx? (From top to bottom)
- Nasopharnyx
- Oropharynx
- Larynopharynx
What organs are in the pharynx (throat) and what is it’s function?
Contains 2 nasal cavities, mouth, esophagus, larynx, and auditory tubes
The function is that it is a passageway for food and liquids and air distribution
What organs are in the larynx (voice box) and what is it’s function?
Thyroid cartilage and epiglottis
Function is air distribution and voice production
What is the function of the trachea (windpipe)?
It is a passageway for air to move to and from the lungs
Define the alveoli
Held in alveolar sacs and covered with a surfactant that’s reduces surface tension and to keep from collapsing
Where gas exchange happens
What are the 3 layers of pleura and what is their function?
- Parietal pleura: lines the chest cavity
- Visceral pleura: covers the lungs
- Intrapleural space: separates these 2 membranes and reduces friction between the lungs and chest cavity during breathing
What are the 3 types of respiration and what is their function?
External: exchange of gases between air and the lungs in the blood
Internal: exchange of gases between the blood and cells
Cellular: oxygen used by cells
What is tidal volume?
Amount normally breathed in or out with each breath
What is vital capacity?
Greatest amount of air that you can breathe out in one exhale
What is expiratory reserve volume?
Amount of air that is forcibly exhaled after normally exhaling
