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Sponge: Set up Cornell Notes on pg. 39
Topic: 12.1 Sensory ReceptorsEssential Question:1. Explain what is meant by
the statement, “Sensory receptors are the portals that link our nervous systems to our surroundings”.
2. What do all types of receptors have in common?
2.1 Atoms, Ions, and Molecules
12.1 Sensory Receptors
1. Chemoreceptors:
2. Pain Receptors:
3. Thermoreceptors:
4. Mechanoreceptors:
5. Photoreceptors:
Pg. 38
Homework• Short Description of
each (in your own words) and a picture illustrating the major function(s)
3
Sensory ReceptorsSensory Receptors
• Specialized cells or multicellular structures that collect information from the environment
They are the portals that link our nervous system to the sights, sounds, smells and textures of the outside world, and help our bodies maintain homeostasis by providing information about what is happening inside the body.
White boards out• When you hear the word, please
draw a picture AND/OR write words of what comes to your mind.
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• Chemoreceptors
• Pain Receptors
• Thermoreceptors
• Mechanoreceptors
• Photoreceptors5
Using Your Senses (4m5s)Pg. 39
Which sensory receptors go with which senses?•Vision• Touch• Smell•Hearing• Taste
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
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
5 Receptor Types
Chemoreceptors Pain receptors Thermoreceptors Mechanoreceptors Photoreceptors
•Description•Function(s)•Illustrations
Name those Receptors!!!!!!!
Be prepared for Mrs. Mc to randomly call on you to NAME and DESCRIBE those receptors
Homework: Pg. 38 receptor descriptions and illustrations (signed tomorrow)
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Receptor TypesChemoreceptors (Ke-mo-receptors)
• respond/sensitive to changes in chemical concentrations
Pain receptors or Nociceptors• respond/sensitive to tissue damage
Thermoreceptors• respond/sensitive to changes in temperature
Mechanoreceptors• respond/sensitive to mechanical forces
• 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• in eyes; respond/sensitive to light intensity
What are some commonalities between the 5 types of receptors?
• RESPOND TO CHANGES• Each receptors is sensitive to a
distinct kind of environmental change and is much less sensitive to other forms of stimulation
Pg. 39
Sensory Receptors (3m)
Pg. 39