1. Intro to Senses 5m25s (if time)
Vision
Touch
Smell
Hearing
Taste

2. Sponge: Set up Cornell Notes on pg. 41
Topic:
12.1 Sensory Receptors
Essential Question:
What do all types of receptors have in common?
12.1 Sensory Receptors
2.1 Atoms, Ions, and Molecules
What do all types of receptors have in common?

3. Sensory Receptors
Sensory Receptors are specialized cells or multicellular structures that collect information from the environment
Link our nervous system to the outside world
Help our bodies maintain homeostasis

4. White Boards!!! Get Your Whiteboards!!!!
When you hear the word, please draw a picture AND/OR write words of what comes to your mind.

5. Chemoreceptors
Thermoreceptors
Mechanoreceptors
Photoreceptors
Nociceptors

6. P. 40
5 Receptor Types
Chemoreceptors Nociceptors Thermoreceptors Mechanoreceptors Photoreceptors

7. P. 40
5 Receptor Types
Chemoreceptors Nociceptors Thermoreceptors Mechanoreceptors Photoreceptors
Using your computer research each of the types of receptors:
Description
Function
Sense associated with that receptor
Read the provided informational sheet
Highlight
Add any NEW information to tree map
Add at LEAST one illustration to each branch of the tree map

8. Using Your Senses (4m5s) Pg. 40 Add to tree map (if missing):
Which sensory receptors go with which senses?
Vision
Touch
Smell
Hearing
Taste

9. Name those Receptors!!!!!!! Table Talk
Be prepared for Mrs. Mc to randomly call on you to NAME and DESCRIBE those receptors
Table Talk
What does each receptor RESPOND to?
________responds to changes in _______...
What sense is associated with each type of receptor?

10. Receptor Types Chemoreceptors (Ke-mo-receptors)
Respond to changes in chemical concentrations
Taste/Smell
Nociceptors or pain receptors
Respond to tissue damage
Excess mechanical, electrical, thermal, or chemical energy
Touch
Thermoreceptors
Respond to changes in temperature

11. Receptor Types Mechanoreceptors Photoreceptors
Respond to changes in mechanical forces (detect deformed receptors)
Touch/Hearing
Proprioceptors: sense changes in the tensions of muscles and tendons
Baroreceptors: sense changes in blood pressure
Stretch receptors: in lungs; sense degree of inflation
Photoreceptors
Respond to changes in light intensity
Vision

12. What are some commonalities between the 5 types of receptors?
Pg. 41
What are some commonalities between the 5 types of receptors?
RESPOND TO CHANGES!!!!!!

13. Sensory Receptors
Each receptors is sensitive to a distinct kind of environmental change and is much less sensitive to other forms of stimulation:
Thermoreceptors- temperature changes
Chemoreceptor- chemical changes....etc
BUT, they may respond to other stimuli if it is strong enough
Ex: Pain receptors can be stimulated by heat, cold, or pressure

14. Sensory Receptors
Similarly, factors other than light, such as a sharp blow to the head, may trigger nerve impulses in visual receptors Ex: May “see stars” even though no light is entering the eye ANY impulses reaching the visual cortex are interpreted as light

15. Sensory Receptors (3m) Pg. 40 Add to your tree map:
Add a word that helps you remember the function of the receptor
Any additional information

16. Each table is assigned a type of receptor
The 5 Types of Sensory Receptors Directions
Each table is assigned a type of receptor
Read your informational sheet
Highlight the MOST important information (FUNCTIONS/Job/description/etc..)
Create a (Quick!) informational poster as a group
Time: 20 minutes

17. Each person is assigned a # 1-5 Get in your “new” groups
The 5 Types of Sensory Receptors Directions
Each person is assigned a # 1-5
Get in your “new” groups
Each “expert” describes their receptor
As a group, create a (quick) tree-map of the 5-receptor types, using your informational sheet as evidence
Include illustrations
Time: 20 minutes