Presentation is loading. Please wait.

Presentation is loading. Please wait.

The Respiratory System

Similar presentations

Presentation on theme: "The Respiratory System"— Presentation transcript:

1 The Respiratory System

2 Purpose of the respiratory system
To provide a constant supply of oxygen to keep your body cells functioning To remove carbon dioxide from the body cells

3 Organs of the respiratory system
Bronchus (bronchi) Bronchioles Alveoli Pleura Diaphragm Nose / mouth Nasal cavity Pharynx (throat) Epiglottis Larynx Trachea Lungs


5 Mouth & Nose Brings air into the body
Nasal hairs in nostrils trap dust

6 Nasal cavity Warms & moistens air
Glands that produce sticky mucus line the nasal cavity traps dust, pollen, and other materials that were not trapped by nasal hairs cilia sweep mucus and trapped material to the back of the throat where it can be swallowed

7 Pharynx Tube-like passageway used by food, liquid, and air
At the lower end of the pharynx is a flap of tissue called the epiglottis

8 Larynx “Voice box” The airway to which two pairs of horizontal folds of tissue, called vocal cords, are attached

9 Trachea Air-conducting tube Connects the larynx with the bronchi
Lined with mucous membranes and cilia Contains strong cartilage rings

10 Bronchi Two short tubes that branch off the lower end of the trachea
Carry air into the lungs. Singular - bronchus

11 Bronchioles Tiny branches of air tubes in the lungs
Connect bronchi to alveoli

12 Alveoli Tiny, thin-walled, grapelike clusters at the end of each bronchiole Surrounded by capillaries Where carbon dioxide and oxygen exchange take place Singular - alveolus


14 Diffusion

15 Pleura Membrane lining the lungs and chest cavity

16 Diaphragm Muscle wall between the chest and the abdomen that the body uses for breathing

17 Inhale 02, our diaphragm contacts and pulls down, rib expand, lungs Inflate
Exhale CO2, diaphragm relaxes and moves up our ribs go back in, and Our lungs deflate.

18 Relationship to digestive system
Cellular respiration requires glucose and oxygen to release energy to the body C6H12O6  +  6O2    6CO2  +  6 H2O  +  Energy Oxygen is provided by the respiratory system Glucose is provided by the digestive system (glucose is made during photosynthesis)


Download ppt "The Respiratory System"

Similar presentations

Ads by Google