Respiratory System
by Jamareah Mclean
Upper Respiratory System
upper respiratory system
- The nose
nasal septum-divides nasal cavities into right and left sides
turbinates- bones that protrude into nasal cavity, increase surface
cilia- the hairs in your nose, trap larger dirt particles
- The sinuses
Cavities in the skull, ducts connect them to the nasal cavity, lined with mocous membrane to warm and moisten the air
Frontal
Maxillary
- Ethmoid
- Sphenoid
- The larynx
Voice box is the triangular chamber below pharynx
Vocal cords or glottis
sound formed by vivbrations
- The trachea
Walls are alternate bands of membrane and C shape rings of hyaline cartilage-to keep trachea open
lined with ciliated mucous membrane
- The pharynx
Throat
Nasopharynx- above and behind soft palate
Orophayrnx- oral part of the mouth
Larynogpharynx
Epiglottis- cartilage flap that prevents food from entering trachea
Lower respiratory System
The lungs
- Bronchi - similar to trachea
- Bronchial tubes-cartilaginous plates
- Alveoli- inner surfaces covered with surfactant to keep alveoli from collapsing. surrounded by capillaries
Pleura
- Thin moist slippery membrane that covers lungs
- Double walled sac
- Parietal pleura
- Visceral pleura
- Plueral fluid is between
- Pleural cavity is space where lungs sit
mediastinum
- Interpleural space between the lungs
- Contains thymus, arota,plumonary artery and veins, superior/inferior vena cava, esphogus, trachea, thoracic duct and lymph nodes
Mucus play a major role in immune defense. The mucus holds antibodies created by the immune cells. The (secretory IgA)antibodies are the largest part of our immune system.
When you breathe it allows nutrients to enter the cells. We get nutrients when we eat and drink, which is apart of the respiratory system.