Which organs are involved in the Respiratory system (breathing) Diaphragm Trachea Bronchus Aorta Mouth Alveoli Rib cage Larynx Ciliated epithelial cells Oesophagus Lungs Bronchioles Arteries Heart Intercostal muscles Stomach Nose
Circle which organs are involved in the Respiratory system (breathing) Diaphragm Trachea Bronchus Aorta Mouth Alveoli Rib cage Larynx Ciliated epithelial cells Oesophagus Lungs Bronchioles Arteries Heart Intercostal muscles Stomach Nose
Respiratory system and breathing Lesson objectives: To know about the breathing system and be able to identify all the organs involved. To be able to explain how breathing occurs.
Larynx Trachea Ribs Alveoli Bronchi Bronchioles Lung Intercostal muscles Diaphragm
A closer look Which divide into smaller tubes called bronchioles until you get to the alveoli (air sacs) The tube leading to the lungs is called the trachea … Which divides into two smaller tubes called bronchi
Respiratory (breathing) System Activity Label the following: Larynx Trachea Bronchi Bronchioles Lung Diaphragm Alveoli
Respiratory System Label your diagram Larynx Trachea Bronchioles Bronchi Lung Alveoli Diaphragm
How do we breathe? When the diaphragm moves up … the lungs are squeezed and air is forced out And it all happens without you trying! the lungs expand and air is drawn in. Watch how it controls breathing When the diaphragm moves down … The diaphragm is a very powerful muscle. diaphragm http://www.biotopics.co.uk/humans
Activity Sketch, complete and annotate a diagram to describe: Breathing in Breathing out You must explain clearly all the actions and processes involved in breathing.
Peer assessment criteria Breathing in: The diaphragm contracts (moves down) The intercostal muscles contract moving the rib cage up and out. The volume increases The pressure decreases. Air is sucked in Ribs move up and out Diaphragm moves down
Peer assessment criteria Ribs move in and down Breathing out: The diaphragm relaxes (moves up) The intercostal muscles relax moving the rib cage down and in. The volume decreases The pressure increases. Air is forced out Diaphragm moves up
Plenary
Which is the odd one out and why? Gullet Trachea Bronchiole Why
Which is the odd one out and why? Stomach Bronchi alveoli Why
Which is the odd one out and why? Diaphragm Bronchiole intercostal muscles Why
Why are the lungs spongy? Full of air bronchioles Alveoli Why