1. Respiratory System

2. Respiratory system Lungs – provide the body with O2 and eliminates CO2
Right Lung
3 lobes
Left Lung
2 lobes
Pleura – membrane on the outside of the lung
Parietal Pleura – outer layer
Visceral Pleura – inner layer
Plural Cavity – space b/w the 2 pleura

3. Lungs

4. Respiratory tract

5. Respiratory tract Nose Pharynx Larynx Trachea Right Lung Left Lung
Bronchi
Bronchioles
Diaphragm
Aveoli
Capillaries
Venule
Arteriole
Bronchiole

6. Two major tasks
External Respiration (Breathing) – the exchange of air between the body and the outside environment
Internal Respiration – the process of bringing O2 to the cells and removing CO2 from them

7. 2 actions of external respiration
Inhalation – breathing in
Diaphragm contracts by flattening and the intercostal muscles raise the ribs; increases the space in the the thoracic cavity and air rushes in
Exhalation – breathing out
Diaphragm relaxes and the ribs lower, causing air to rush out

9. Upper respiratory system

10. Upper respiratory system
Frontal Sinus
Pharyngeal Tonsil - Adenoids
Nostril
Hard Palate
Nasopharynx
Uvula
Palatine Tonsil
Tongue
Oropharynx
Epiglottis
Lingual Tonsil
Laryngopharynx
Larynx
Esophagus
Trachea

11. The throat / pharynx Three sections Nasopharynx
Pharyngeal tonsils (adenoids) – aid in the body’s immune defense
Oropharynx – triggers swallowing
Palatine tonsils – part of the immune system
Laryngopharynx – divides into 2 sections

12. esophagus Passageway for food Part of the GI tract
Epiglottis prevents food from entering the larynx (glottis)
What is the term for when food goes into the larynx instead of the esophagus?
What is the procedure for dislodging food that is causing someone to choke?

13. The larynx (voice box) Air passes to the trachea
Produces sounds of speech and singing
Contain the vocal cords
Size and thickness of the cords determine the pitch
Supported by the thyroid cartilage

14. The trachea and lower lung passages
Connects the larynx to the right and left bronchi
Bronchi are the passageways through which air enters the lungs
The bronchi are divided into smaller tubes called bronchioles

15. External respiration
The air between the body and the outside environment is exchanged.
What is another term for external respiration?

16. Terms you should know Internal Respiration External Respiration
Oxygen is carried to and from the cells.
What is removed from the cells?
External Respiration
The air between the body and the outside environment is exchanged.
What is another term for external respiration?
What is cilia?