1. The Senses EQ: How does your body detect changes?

2. Root Words

5. Link 

6. Sensation: Occurs when the brain becomes aware of sensory impulses
Perception: Occurs when the brain interprets those sensory impulses.

7. 5 Types of Receptors Chemoreceptors Pain Receptors Thermoreceptors
Stimulated by changes in chemicals
Pain Receptors
Stimulated by pain
Thermoreceptors
Changes in temp.
Mechanoreceptors
Changes in pressure or movement
Photoreceptors
Changes in light energy

8. Touch and Pressure Touch and pressure derive from 3 kinds of receptors
Free Nerve Endings
Tactile (Meissner’s)Corpuscles
Lamellated (Pacinian)Corpuscles

9. Free Nerve Endings Located in Epithelial Tissue.
Responsible for sensation of itching

10. Tactile (Meissner’s) Oval, connective tissue
Hairless portion: lips, fingertips, palms, nipples
Sensation of light touching

11. Lamellated (Pacinian)
Large connective fibers
Deeper dermal and subcutaneous tissue
Senses heavy pressure

12. Engaging all pressure senses

13. PAIN!!!!
Pain is good, pain receptors protect the body from further tissue damage.
Pain adapts poorly. Thus, persistent pain does not fade
Visceral Pain: Pain in organs (Only receptors in viscera)

14. Special Senses (because you’re “special”)
Smell
Taste
Hearing
Equilibrium
Sight

15. Taste Taste Buds: receptors located primarily on the tongue
Roughly 10,000 taste buds on tongue. ~1,000 on roof of mouth
Each “bud” includes Taste Cells
Salivary gland provides fluid for chemical to enter taste cell

16. 5 Taste Sensations Sweets Sour Salty Bitter
Umami (Japanese term meaning delicious)

17. Taste map is WRONG, there are equal taste cells throughout the tongue

18. LEFT SIDE ACTIVITY
Answer questions 1-11 (Check your Recall) in chapter 10 of your text book.
Look on the internet and find the most interesting picture that plays with our sense of sight.