2. What are the five senses? TouchSightHearingTasteSmell

3. What organ system controls the sense of Touch? The Integumentary System

5. What is in the Integumentary system? SkinHairNails

6. What is the skin? The largest organ in the body Protective Has many types of sensory receptors.

8. Protective The skin keeps water in Keeps dirt and bacteria out When you are cut, can grow back closing the cut.

9. Temperature control The skin helps regulate the bodies temperate Does this in two ways

10. #1 : Cool the body Route blood near the surface Lift hairs sweat

11. #2 : Heat the body Route blood away from the surface Pulls hairs down Cause muscles to shake

12. What allows the skin to sense? Receptors

14. 5 types of receptors PainColdHeatPressureVibration

15. #1 : Pain receptors Most important receptor Lets the brain know the body is hurt Very close to the top of the skin

16. #2 : Cold receptors Separate Heat & Cold receptors Deep in the skin

17. #3 : Heat receptors Separate Heat & Cold receptors Near the surface

18. #4 : Pressure receptors Feels contact Lets us know if we are in contact with something Close to the surface

19. #5 : Vibration Receptors Feels shaking & vibrations Good to find food & not become food Near the surface

20. How does the Skin & the Brain work together ? Feedback mechanisms

21. What is a feed back mechanism? Four steps

22. #1: The brain gives an order Example: The brain tells the skin to sweat.

23. #2: The organ does the Brain’s order Example: The skin to sweats.

24. #3: The organ sends information to the brain Example: The skin tells the brain it is getting cold.

25. #4: The brain gives a different order Example: The brain tells the skin to stop sweating.

26. Homework   Due Tuesday: Homework: Page 620 #1.a.b.c. & #2.a.b.c.     Due Thursday:   1) Brain Diagram   2) Pg. 525 #1.a.b.c., 2.a.b.     Due Friday:   1) Four Vocab: Integumentary system, Stimulus, Medula, Cerebrum  