Unit 11 Respiration and gas exchange

Diaphragm muscles relax in a dome-shape when exhaling

• True

• False

Your thorax volume decreases when you inhale

• True

• False

The relaxed shape of diaphragm is flat-shape

• True

• False

The lungs cannot function normally without diaphragm

• True

• False

Cilated cells move the mucus back to the lungs through goblet cells

• True

• False

The low pressure when breathing in makes the trachea collapse

• True

• False

What keeps your trachea, bronchi and bronchiole tubes open?

• ligament squares

• muscles

• cartilage rings

• ciliated cells

19. What happens when you breathe in? (tick all that apply)
    

• 19. increases volume in thorax

• 19. diaphragm contracts and flattens

• 0. reduces volume in thorax

• 0. diaphragm relaxes and moves up

Diaphragm is...

• part of lungs
  

• throat muscle
  

• structure in bones

• muscle that helps in breathing

25. Which of the following is not happening during inspiration?

• 0. the diaphragm contracts

• 0. the rib cage rises up

• 0. expands the volume of the chest cavity

• 0. diaphragm is relaxing