1. Skin Senses Pressure, Temperature & Pain

2. The Skin Senses Skin is the _________ sense organ
Remember Me?
Skin is the _________ sense organ
Makes up about _______of your body weight
Avg of about ______________of skin on adults
You shed about _________ million skin cells every day
That’s _______________ per minute
Other senses are found in __________ areas of the body (eye, ear, etc)
your sense of touch can be found all over your body
Your skin is filled with ________________that send info to your spinal cord
The Skin Senses

3. Medulla
From your spinal cord, the signal crosses in the ___________________
Part of the ___________________
Functions are ____________________
Regulates ________________ ______________and breathing
Transfers information from ________________into brain

4. Thalamus Information transfers from the _____________ to the thalamus
The _________ is found in each ____________ (plural = thalami)
Almost ALL _____________ info goes to the thalamus _________ before going to the rest of the brain
Exception is _____________
Majority of ALL signals going to the ___________pass through this
It also receives info from the ___________, modulates it and __________________________

5. Somatosensory Cortex
Thalami send info to the _______________ _________________
This is the area that processes ALL sensory info related to ________, pain, ___________
Part of the _________________ lobes

6. Somatosensory Cortex
Each neuron takes its information to a specific place in the somatosensory cortex. Next, that part of the somatosensory cortex gets to work on figuring out what the information means.
Think of it like scientists sending data to a data analyst. Each scientist, like the neuron, gathers information and sends it to a master analyzer or the somatosensory cortex.

7. Touch Four basic skin senses are ____________________
All skin ___________________ are a combination of these four basic senses
These parts can ___________ to create different touch sensations.
For example, burning is pain, warmth, and cold.
Itching is gentle stimulation of pain receptors

8. Temperature Temperature is sensed by ________________ under the skin
We have warm/hot and cold ____________
Warm/hot – are not stimulated above about ___________ celsius
Then the _____________take over to avoid skin damage
Cold – are not stimulated under about ______________(this is why you can start to feel numb)
Way more __________ receptors than warm/hot
Most are in the ________________

9. Pressure
Only pressure has identifiable____________ receptors (__________________) located beneath the skin
They convert _____________ stimulation into neural messages to send to the brain.
Constant pressure causes ________________ ______________ and it either reduces the number of signals or quits sending them all together. (like the
clothes on your body)
- Sensory receptors are located _________ on
the body so certain areas are more ________
than others.

10. TOUCH Time for an EXPERIMENT!
The amount of _______________________ dedicated in the brain depends on the sensitivity of that area.
This has been mapped as the somatosensory map or ________________
Time for an EXPERIMENT!

11. SOMATOSENSORY CORTEX