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3.03 REMEMBER THE STRUCTURES OF THE SENSORY SYSTEM: NOSE
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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
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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
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3.03 Remember the structures of the sensory system
NOSE 3.03 Remember the structures of the sensory system
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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
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STRUCTURES OF THE NOSE Further Info with Functions
3.03 Remember the structures of the sensory system
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STRUCTURES OF THE NOSE Further Info with Functions
Olfactory area 3.03 Remember the structures of the sensory system
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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
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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
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Understanding the functions of the nose
Smell 3.04 Understand the functions and disorders of the sensory system 10
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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
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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 3.04 Understand the functions and disorders of the sensory system 12
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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
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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
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Understanding the functions of the nose
Turbinates 3 functions: Warm the air Humidify the air Assist in filtering particles 15
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Understanding the functions of the nose
(A) Pathway of smell (B) Nerve activity in smell 3.04 Understand the functions and disorders of the sensory system 16
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Understanding the functions of the nose
Pathway of Smell Olfactory receptors Olfactory bulb Olfactory tract Anterior commissure Olfactory cortex 17
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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
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Function of the nose: Smell
Pleasant or unpleasant? 3.04 Understand the functions and disorders of the sensory system 19
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Function of the nose: Smell
Smell Activity What is that smell? 3.04 Understand the functions and disorders of the sensory system 20
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3.04 Functions and disorders of the nose
3.04 Understand the functions and disorders of the sensory system 21
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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 3.04 Understand the functions and disorders of the sensory system 22
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Disorders of nose: Deviated nasal septum
What is its impact on health? Snoring Difficulty breathing Become mouth breather 3.04 Understand the functions and disorders of the sensory system 23
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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
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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 3.04 Understand the functions and disorders of the sensory system 25
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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 3.04 Understand the functions and disorders of the sensory system 26
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Disorders of the nose: Nasal polyps
How are they treated? Medication to reduce swelling Surgery for removal 3.04 Understand the functions and disorders of the sensory system 27
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Disorders of the nose: Rhinitis
Define rhinitis. Rhin- -itis Inflammation of lining of nose 3.04 Understand the functions and disorders of the sensory system 28
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Disorders of the nose: Rhinitis
What causes rhinitis? Allergies Infection Fumes Odors Emotion drugs 3.04 Understand the functions and disorders of the sensory system 29
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Disorders of the nose: Rhinitis
What are the symptoms? Nasal congestion Drainage Sneezing Itching 3.04 Understand the functions and disorders of the sensory system 30
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Disorders of the nose: Rhinitis
What is treatment? Eliminate causes antihistamines 3.04 Understand the functions and disorders of the sensory system 31
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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? 3.04 Understand the functions and disorders of the sensory system 32
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3.04 Understand the functions and disorders of the sensory system
Nose The End 3.04 Understand the functions and disorders of the sensory system 33
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