THE HUMAN BODY – RESPIRATORY SYSTEM assignment

Learner’s activity

1. State the importance of respiration to the body
2. Give a reason why it’s not advisable to breathe through the mouth
3. How are cilia useful to people during breathing?
4. State the importance of the following organs of the respiratory system;

• Epiglottis
• Rib cage
• Nose

State what happens to the following parts during breathing in

• Diaphragm
• Lungs
• Intercostals muscles

By what process does carbon dioxide move from capillaries to lungs?

State two ways in which air sacs are adapted for exchange of gases.

2. Study the table below and answer the questions that follows;

Briefly explain why;

1. Exhaled air contains little oxygen
2. Concentration of nitrogen remained unchanged
3. Exhaled air contains more carbon dioxide