Learning Log 12/13/13 Describe the function of sensory organs
in humans and compare them to the ones in other animals. Smell
test!
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Review What is the function of the skin? Think about
plants/trees. Which part of a plant/tree is most like the skin on a
human?
Slide 3
Review When you bump arm on your desk, what is the first thing
that happens within your nervous system?
Slide 4
Review The leaves on some plants help keep water inside. Which
body part performs a similar function?
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Sight
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Eyespots
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Example: Non-example:
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Worms! Why do you think earthworms do not have a well-developed
sense of sight? Earthworms also have eyespots.
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What is the function of the eye? Discuss the question at your
table and record them in your Organ Booklet. Please do not say, it
helps you see. This would not be a good description.
Slide 11
Why Do Some Animals See Better at Night Than Others? Some more
background information: Eyes use light-collecting cells called rods
to see low light. Humans cant see every well at night. But some
animals, like owls and cats, can!
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The retina is full of cells, called rods and cones, that sense
light. Rods pick up light. Cones see color.
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How does the number of rods in an eye change how much light the
eye can collect? - Rods pick up light. - Cones see color. - Rods
pick up light. - Cones see color. The more rods you have in an eye,
the better you can see.
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Hearing
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Do You Hear What I Hear?
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Why do you think dolphins and some whales use sound
(echolocation) in the way that bats do?
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What is the function of the ear? Discuss the question at your
table and record them in your Organ Booklet. Please do not say, it
helps you hear. This would not be a good description.
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The average human can recognize about 10,000 different odors!
How well do you recognize scents? 1.Vanilla 2.Lemon/Lime 3.Cinnamon
4.Vinegar
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Analyze your results from our SciStarter! Were the scents easy
or difficult to recognize? Why do you think this is?
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Moths antennae
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The noses on top of a honeybees antennae are chemoreceptors,
which detect chemicals in the air. Can you think of how a honeybee
might use chemoreceptors?
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What is the function of the nose? Discuss the question at your
table and record them in your Organ Booklet. Please do not say, it
helps you smell. This would not be a good description.
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As a table: Discuss what we read in the article. Create your
own Flow Map on your paper.
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Taste sensations on the tongue
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Try holding your nose the next time you eat something. You will
notice that your taste buds are able to tell your brain something
about what youre eating that its sweet, for instance but you wont
be able to pick the exact flavor until you let go of your
nose.
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What is the function of the tongue? To sense chemicals in food
to send to the brain.
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Cats have whiskers that allow them to feel. How might a cat use
its whiskers?
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What do all of your sensory organs have in common?
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Brain Break! Stand up and do ten jumping jacks!
Slide 33
Summarize Today we learned about the sensory organs in animals
(and plants). On the paper you used to draw your flow map, write a
summary of how these organs work (their function) to help us
process the world around us. Provide an example for each. EXAMPLE:
My eyes take in light, which sends a signal to my brain to help me
see. Right now, I am seeing the words I am writing on my
paper.
Slide 34
Summarize Right now, my brain is processing information all
around me. My eyes are focused on the words that I am writing
