1. 3.04 Functions and disorders of the nose 3.04 Understand the functions and disorders of the sensory system 1

2. 2 Essential Questions What are the functions of the sensory system? What are some disorders of the sensory system? How are sensory system disorders treated? How do you relate the body’s communication to the sensory system?

3. Understanding the functions of the nose 3.04 Understand the functions and disorders of the sensory system 3

4. Understanding the functions of the nose Nares (nostrils) Nares (nostrils) Nasal cilia Nasal cilia 3.04 Understand the functions and disorders of the sensory system 4

5. Understanding the functions of the nose Nasal septum Nasal septum Olfactory receptors Olfactory receptors Turbinates Turbinates 3.04 Understand the functions and disorders of the sensory system 5

6. Understanding the functions of the nose 3.04 Understand the functions and disorders of the sensory system 6 (A) Pathway of smell (B) Nerve activity in smell

7. Smell Trivia… The beginnings of perfume use can be traced back thousands of years to the early Egyptians. The beginnings of perfume use can be traced back thousands of years to the early Egyptians.  Burning of resins and woods were used for their fragrance during religious ceremonies. Perfume was developed to attract the goodwill of the gods. Perfume was developed to attract the goodwill of the gods. When Tutankhamen’s tomb was discovered, there was still a trace of the strong fragrance detected. He was buried over 3,300 years ago. When Tutankhamen’s tomb was discovered, there was still a trace of the strong fragrance detected. He was buried over 3,300 years ago. 3.04 Understand the functions and disorders of the sensory system 7 Perfume

8. Function of the nose: Smell 3.04 Understand the functions and disorders of the sensory system 8 Pleasant or unpleasant?

9. Function of the nose: Smell 3.04 Understand the functions and disorders of the sensory system 9 Smell Activity What is that smell?

10. Disorders of the nose Deviated nasal septum What causes a deviated nasal septum? What causes a deviated nasal septum? What is its impact on health? Blockage of airflow through one nostril, headaches, loud breathing, nose bleeds. What is its impact on health? Blockage of airflow through one nostril, headaches, loud breathing, nose bleeds. How does a septoplasty How does a septoplasty relieve symptoms? 3.04 Understand the functions and disorders of the sensory system 10

11. Disorders of the nose Nasal polyps What are nasal polyps? Growths in the nasal cavity What causes nasal polyps? Rhinitis How are they treated? In severe cases, surgery may be necessary to remove the polyps. 3.04 Understand the functions and disorders of the sensory system 11

12. Disorders of the nose Rhinitis Define rhinitis- Inflammation of the lining of the nose. Define rhinitis- Inflammation of the lining of the nose. What causes rhinitis? Allergies, infection, emotions, odors, drugs. What causes rhinitis? Allergies, infection, emotions, odors, drugs. What are the symptoms? Nasal congestion, drainage, sneezing or itching. What are the symptoms? Nasal congestion, drainage, sneezing or itching. How is rhinitis treated? Antihistamines, eliminate the allergen How is rhinitis treated? Antihistamines, eliminate the allergen 3.04 Understand the functions and disorders of the sensory system 12

13. 3.04 Understand the functions and disorders of the sensory system 13 Essential Questions What are the functions of the sensory system? What are some disorders of the sensory system? How are sensory system disorders treated? How do you relate the body’s communication to the sensory system?

14. 3.04 Functions and disorders of the nose The End 3.04 Understand the functions and disorders of the sensory system 14