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