Ears, Eyes & Sinuses

EYES, EARS AND SINUSES

 1.What can cause major damage to the eyes while on the water and what should you do to prevent it?

2. What causes ear infections and what can be done to prevent them?

3. In the diagram of the ear below.

a.   Marking the following: Pinna, outer ear canal, eardrum semicircular canals, cochlea, eustachean tube

b.   Distinguish between the outer, middle and inner ear

c.   Marking where mucous and bacteria can develop and grow

          d.  Mark in where pain develops as a result of infection

4.What is the eustachian tube and why is it Important in snorkelling?

5. Describe three common ear infections and list one treatment for each.

6. Define the term barotrauma

7. Two places barotrauma can affect the body while snorkelling are the ear and sinuses.Research information and identify the cause, one way to reduce and one way to prevent the effect.

 8. What are sinuses and when can they cause pain when snorkelling? Complete the two diagrams to explain your answer.

Need to insert sinus pictures

9. what should you do if you have blocked sinuses but still want to go snorkelling?

10. What is the physiological cause of sea sickness?

11. List any three things you can do to prevent seasickness.

12. What could one golden rule be to prevent seasickness and why?