1. Skin, Tongue, Nose, Ear and Eye
Senses
Skin, Tongue, Nose, Ear and Eye

2. Senses Sensory Receptors Somatic Senses Special Senses
Detect environmental changes and trigger nerve impulses
Somatic Senses
Touch, pressure, temperature, pain
Special Senses
Smell, taste, vision, equilibrium, hearing

3. Skin – Somatic Sense

4. Work on the label & coloring worksheet before moving on!!
link

5. Receptors Chemoreceptors Pain receptors Thermoreceptors
Detects chemicals
Pain receptors
Detects pain
Thermoreceptors
Detects heat
Mechanoreceptors
Detects pressure and body location
Photoreceptors
Detects light

6. Sensations
Sensation
Feeling that occurs when a brain interprets a sensory impulse
Projection
Process where the cerebral cortex creates a feeling caused by the sense
Example: bad smell – head ache or throw up feeling
Sensory adaptation
Sensory receptors stop sending signals when they are repeatedly stimulated
Example: We can not feel that we are wearing clothes after a while or getting used to a certain smell or sound.

7. Somatic Senses Free Nerve Endings Meissner‘s Corpuscles
Pain, heat, cold
Meissner‘s Corpuscles
touch
Pacinian Corpuscles
pressure

9. Sense of Pain Visceral Pain Referred Pain Acute Pain Chronic Pain
Occurs in visceral tissue such as heart, lungs and intestine
Referred Pain
Feels as though it is coming from a different part
Heart pain may be felt as pain in the arm or shoulder
Acute Pain
Originates from skin, usually stops when stimulus stops (needle prick)
Chronic Pain
Dull aching sensation
What is the difference between Acute and Chronic Pain?

10. Rank the pain from least to worst.
Stubbed toe Burn from stove Slamming finger in a door Paper cut Sprained ankle Sore throat Sore muscles

11. Regulation of Pain
Inhibitors of Pain (natural brain chemicals can be mimicked by drugs such as morphine)
Serotonin
Endorphins

12. How is the Universal Pain Assessment Tool used by Health Care Providers?

13. The Rising Tide of Prescription Abuse
2.6 million people nationwide now regularly use prescription pain pills for recreational purposes. Taken in small doses, painkillers produce feelings of euphoria with no hangover.

14. Where do most people obtain prescription drugs?
What regulations can be imposed to stop prescription drug abuse?

15. It‘s Lab Day!!! ……. link Two Point Discrimination Baroreceptors
Paperclip & Ruler
Baroreceptors
Markers & Ruler
Thermoreceptors
Nails (hot & cold)

16. Joke What did the right eye say to the left eye?
Between you and me something smells!

17. Sense of Smell (Olfactory)
Odor
Smell particles
Everything that we smell has a different odor and therefore a different smell.
Example: a Rose has a differently shaped odor (smell particle) than a banana. Our nose is able to detect the difference and the brain is interpreting it
Receptor Cell
Nerve cell that detects odor in air
Olfactory Bulb
Nerve in nose that collects all the odor info
Olfactory Tract
Nerve pathway to brain so brain can interpret the smell

18. How do we smell thing? Odor attaches to Receptor Cell in the nose.
Receptor Cell sends info to Olfactory Bulb.
Olfactory Bulb delivers info to Olfactory Tract.
The Olfactory Tract sends into to Brain via Nerve Pathway (impulses – Action Potentials)

19. Look at the picture and explain in your OWN words how smell works….

20. Why do smells trigger memories?
Smell is processed in the Parietal lobe as well as the Hippocampus.
The Hippocampus stores all our memories.
Therefore memories that are saved in combination with a certain smell can be retrieved when we encounter that smell again.
Example: The smell of fresh baked cookies trigger the memory of baking cookies with grandma.
Example: The smell of a certain parfum makes you think of your lover.

21. How do we smell? Video Clip

22. Work on the „Sense of Smell“ Worksheet
Link