1. 3.04 Understand the functions and disorders of the sensory system
3.04 Sensory structures, functions and disorders of the tongue and skin
3.04 Understand the functions and disorders of the sensory system

2. 3.04 Understand the functions and disorders of the sensory system
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?
3.04 Understand the functions and disorders of the sensory system

3. Structures of the tongue
3.03 Remember the structures of the sensory system

4. Understanding the functions of the tongue
Taste
3.04 Understand the functions and disorders of the sensory system

5. Understanding the functions of the tongue
Gustatory receptors (*taste buds-the papilla on the tongue)
Can you identify the cranial nerves?
3.04 Understand the functions and disorders of the sensory system

6. 3.04 Understand the functions and disorders of the sensory system
Taste Trivia
Did you know???
An adult has on average 9,000 taste buds (a child even 10,000)
More buds means the individual perceives more types of taste
The spicy foods (like chili peppers) stimulate the pain receptors, not the taste buds
3.04 Understand the functions and disorders of the sensory system

7. Structures of the tongue: taste buds
Did you know…
eating chocolate makes the brain produce natural opiates
Produces a sense of well-being
Reduces pain
Makes you happy!
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and disorders of the sensory system

8. 3.03 Remember the structures of the sensory system
Trivia Tongue
Did you know…
Taste is the weakest of the five senses
We have almost 10,000 taste buds inside our mouths; even on the roofs of our mouths
Everyone’s tongue print is different similar to fingerprints
3.03 Remember the structures of the sensory system

9. Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and disorders of the sensory system

10. Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and disorders of the sensory system

11. Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and disorders of the sensory system

12. Understanding the functions of the tongue
Taste
Salty
Sour
Sweet
Bitter
Umami
NEW!
3.04 Understand the functions and disorders of the sensory system

13. 3.04 Understand the functions and disorders of the sensory system
Sense of Taste
What is the relationship between the sense of taste and the sense of smell?
3.04 Understand the functions and disorders of the sensory system

14. Understanding the functions of the tongue
Taste Activity
Do you like all of your taste buds?
3.04 Understand the functions and disorders of the sensory system

15. Disorders of the tongue
Glossitis-inflammation of the tongue
Gloss itis
What causes glossitis? Exposure to irritants (burn, spicy foods, tobacco, etc., virus or bacteria
What are the benefits of good oral hygiene in treatment and prevention of glossitis?
3.04 Understand the functions and disorders of the sensory system

16. Disorders of the tongue
Strawberry tongue due to scarlet fever
What are other causes of strawberry tongue? Vitamin deficiences, toxic shock syndrome
How is it treated? Eliminate the cause, antibiotics, avoid additional irritation
How are disorders of the tongue relevant to taste?

17. 3.04 Understand the functions and disorders of the sensory system
Disorders of the tongue:
*Thrush-yeast infection that causes white patches in the mouth and on the tongue
*Who gets it? Common in people with
suppressed immune systems (babies,
chemotherapy, AIDS, etc.),
people on antibiotics for a long period
of time
Treatement: Antifungal medications
How are disorders of the tongue relevant to health?
3.04 Understand the functions and disorders of the sensory system

18. 3.04 Understand the functions and disorders of the sensory system
The Skin
3.04 Understand the functions and disorders of the sensory system

19. 3.03 Remember the structures of the sensory system
Structures of the skin
Epidermis layer-outer layer
Dermis layer-inner layer; “true skin”
Subcutaneous layer-connective tissue and stored fat.
Touch receptors
Tactile corpuscles located in the skin
Temperature sensors
Pain receptors
3.03 Remember the structures of the sensory system

20. Understanding the sensory functions of the skin
Touch
Tactile corpuscles (receptors)
Temperature sensors
Pain receptors
Referred pain
Phantom pain
3.04 Understand the functions and disorders of the sensory system

21. Understanding the functions of the skin
Touch
Discuss the importance of touch.
3.04 Understand the functions and disorders of the sensory system

22. Understanding the functions of the skin
Touch Activity Guess what’s in the bag? Shhh…
3.04 Understand the functions and disorders of the sensory system

23. 3.04 Understand the functions and disorders of the sensory system
Disorders of the skin
How do you think the disorders of the skin pictured impact the sensory function of the skin?
Burns Dermatitis
(1st, 2nd, 3rd degree)
3.04 Understand the functions and disorders of the sensory system

24. 3.04 Understand the functions and disorders of the sensory system
Disorders of the skin
Psoriasis-chronic inflammatory skin disease
with silvery patches
Urticaria-itching skin usually with the development of hives or welts and usually caused by an allergic reaction
*Phantom pain-
common following an amputation;
the patient may complain of their foot,
toes, itching and/or hurting when they
are no longer there.
3.04 Understand the functions and disorders of the sensory system

25. Structures of the sensory system
Did you know…..
Our eyes are always the same size from birth, but our nose and ears never stop growing!
3.03 Remember the structures of the sensory system

26. 3.04 Understand the functions and disorders of the sensory system
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?
3.04 Understand the functions and disorders of the sensory system

27. 3.04 Sensory functions and disorders of the tongue and skin
The End
3.04 Understand the functions and disorders of the sensory system