1. 3.03 REMEMBER THE STRUCTURES OF THE SENSORY SYSTEM: NOSE

2. What are the structures of the sensory system: Nose?
ESSENTIAL QUESTIONS
What are the structures of the sensory system: Nose?
3.03 Remember the structures of the sensory system

3. 3.03 Remember the structures of the sensory system
THE SENSES
Eyes
Sight
Ears
Hearing
Nose
Smell
Tongue
Taste
Skin
Touch
3.03 Remember the structures of the sensory system

4. 3.03 Remember the structures of the sensory system
NOSE
3.03 Remember the structures of the sensory system

5. STRUCTURES OF THE NOSE Further Info with Functions
Nares (nostrils)
Nasal cilia
Nasal septum
Olfactory receptors
Turbinates
3.03 Remember the structures of the sensory system

6. STRUCTURES OF THE NOSE Further Info with Functions
3.03 Remember the structures of the sensory system

7. STRUCTURES OF THE NOSE Further Info with Functions
Olfactory area
3.03 Remember the structures of the sensory system

8. 3.04 Understand the functions and disorders of the sensory system
3.04 Functions of the Nose
3.04 Understand the functions and disorders of the sensory system 8

9. 3.04 Understand the functions of the sensory system: Nose
Essential Questions
What are the functions of the sensory system?
3.04 Understand the functions and disorders of the sensory system 9

10. Understanding the functions of the nose
Smell
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11. Understanding the functions of the nose
Nares (nostrils):
External openings of the nose
Connect to the nasal passages allowing us to inhale through our noses
Used for smelling
Odor-sensitive olfactory organs located inside nose to process and interpret olfactory information 11

12. Understanding the functions of the nose
Nasal cilia: nose hairs
Trap dust and other foreign particles
Warms the air from rich supply of blood before entering lungs
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13. Understanding the functions of the nose
Nasal septum:
Similar to lane dividers on a busy highway
Septum allows air we breathe to go directly from nose to back of nose to pharynx and into lungs
Without the septum, the air might “get lost”,
the turbulence may
interfere with transit to lungs 13

14. Understanding the functions of the nose
Olfactory receptors
Expressed in cell membranes of olfactory receptor neurons are responsible for the detection of odor molecules 14

15. Understanding the functions of the nose
Turbinates
3 functions:
Warm the air
Humidify the air
Assist in filtering particles 15

16. Understanding the functions of the nose
(A) Pathway of smell
(B) Nerve activity in smell
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17. Understanding the functions of the nose
Pathway of Smell
Olfactory receptors
Olfactory bulb
Olfactory tract
Anterior commissure
Olfactory cortex 17

18. Smell Trivia…
Perfume
Did you know???
The beginnings of perfume use can be traced back thousands of years to early Egyptians.
Burning of resins & woods were used for their fragrance during religious ceremonies.
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 3,300 years ago. 18

19. Function of the nose: Smell
Pleasant or unpleasant?
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20. Function of the nose: Smell
Smell Activity
What is that smell?
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21. 3.04 Functions and disorders of the nose
3.04 Understand the functions and disorders of the sensory system 21

22. 3.04 Understand the functions and disorders of the sensory system
Disorders of the nose
Deviated nasal septum
Occurs when the thin wall (nasal septum) between your nostrils is displaced to one side, which makes one nasal passage smaller
Cause: injury to nose, deviating the septum
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23. Disorders of nose: Deviated nasal septum
What is its impact on health?
Snoring
Difficulty breathing
Become mouth breather
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24. Disorders of nose: Deviated nasal septum
How does a septoplasty relieve symptoms?
Nasal septum is straightened and repositioned in center
May require surgeon to cut and remove parts of septum before reinserting in the proper position
Allows air to flow into nose straight 24

25. Disorders of the nose: Nasal polyps
What are nasal polyps?
Soft, painless, noncancerous growths on the lining of your nasal passages or sinuses
They hang down like teardrops or grapes
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26. Disorders of the nose: Nasal polyps
What causes nasal polyps?
Result from chronic inflammation due to asthma, recurrent infections, allergies, drug sensitivity or certain immune disorders
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27. Disorders of the nose: Nasal polyps
How are they treated?
Medication to reduce swelling
Surgery for removal
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28. Disorders of the nose: Rhinitis
Define rhinitis.
Rhin- -itis
Inflammation of lining of nose
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29. Disorders of the nose: Rhinitis
What causes rhinitis?
Allergies
Infection
Fumes
Odors
Emotion
drugs
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30. Disorders of the nose: Rhinitis
What are the symptoms?
Nasal congestion
Drainage
Sneezing
Itching
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31. Disorders of the nose: Rhinitis
What is treatment?
Eliminate causes
antihistamines
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32. 3.04 Understand the disorders of the sensory system: Nose
Essential Questions
What are some disorders of the sensory system?
How are sensory system disorders treated?
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33. 3.04 Understand the functions and disorders of the sensory system
Nose
The End
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