Sponge: Set up Cornell Notes
on pg. 39
Topic:
12.1 Sensory Receptors
Essential 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?
12.1 Sensory Receptors
2.1 Atoms, Ions,
and Molecules
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)
Sensory Receptors
Sensory 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.
3
White boards out
• When you hear the word, please
draw a picture AND/OR write words
of what comes to your mind.
4
• Chemoreceptors
• Pain Receptors
• Thermoreceptors
• Mechanoreceptors
• Photoreceptors
5
Pg. 39
Using Your Senses (4m5s)
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 5receptor 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)
Receptor Types
Chemoreceptors (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
11
Pg. 39
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)