WARM UP 2/22
Do you know the 8 systems we have learned so
far?
• https://www.brainpop.com/health/bodysyste
ms/nervoussystem/
• https://www.brainpop.com/health/bodysyste
ms/spinalcord/
ADD TO CHART:
NERVOUS SYSTEM
PARTS:
Brain, spinal cord, nerves
FUNCTIONS:
1. Sends quick messages
between the brain and
body parts
2. Controls our senses
MAIN NERVES OF THE BODY
VOCABULARY
back of resource sheet
NEURON - nerve cell
SYNAPSE - a small space between
neurons. A chemical goes across
here to keep the message being sent
SOMATIC – nerves that
control voluntary
actions
(moving skeletal
muscles)
AUTONOMIC - nerves
that control
involuntary actions
(heart beat,
breathing…)
• SPINAL CORD - a group of long nerves that
carry messages between the body and the
brain
• VERTEBRAE -bones that protect
the spinal cord
DID YOU KNOW?
• Different areas of your brain control
DIFFERENT PARTS of the body
Funny bone is not a bone!
It’s a nerve
https://www.youtube.com/watch?v=R
FBTBOwueyU
VIDEO 3
VIDEO 3: testing your reaction time
1-3 min
https://www.youtube.com/watch?v=3XM-4Qavh5k
WARM UP
BE AT YOUR SEAT WITH YOUR FOLDER
CHECK FOR MISSING ASSIGNMENTS IN YOUR
FOLDER!
MAKE UP DAY
PHONE CALLS HOME IN CLASS FOR ANYONE NOT
USING THEIR TIME TO DO THEIR WORK
WARM UP 2/23
TODAY 2/23
1. Touch receptor experiment
2. GRADES GIVEN OUT
3. Any extra time can be used for make up
RETAKES ON QUIZ #4 TOMORROW
REST OF THE HOUR
Finish your lab activity sheet
Work on missing work if time left
** check folders first!
WARM UP 2/24
TODAY 2/24
1. Couple video clips
2. Cool eye stuff
3. Activity
LEARNING TARGET 2/24
6
I can name the parts and explain what the
nervous, endocrine, and excretory systems do.
LENS
RETINA
OPTIC NERVE
IRIS
CORNEA
PUPIL
BLIND SPOT
VITREOUS HUMOR
PART 1: VIDEO 1
https://www.youtube.com/watch?v=RE1MvRmWg7
I
VIDEO 2:
https://www.youtube.com/watch?v=6YxffFmi4Eo
VIDEO 3:
https://www.youtube.com/watch?v=6Q_EKXN3EM
g
Where do your tears come from?
Why does your nose run when you cry?
MESSAGE FROM EYE GOES TO BRAIN
OPTIC NERVE
MESSAGE GOES TO OUR BRAIN FROM
OUR EYES, BUT BRAIN CAN INTERPRET
WRONG…..
• OPTICAL ILLUSIONS
Describe the line in the middle
Look at the gray part. Which side (right or
left) do you think is darker...?
Are the horizontal lines parallel, or do they
slope?
Which inner circle is bigger?
How many legs does this
elephant have?
Man playing a horn?
Or woman's face?
A rabbit, looking right?
Or a duck, looking left?
A skull?
Or a woman looking into a vanity mirror?
A Native American profile?
Or an Eskimo entering a cave?
One face?
Or two profiles facing each other?
Young woman or old woman?
Up or down?
Can you stack the dice like this??
Which is your dominant eye?
Point your finger at an object in the room far
away. Try to line your finger up with it.
Now close your left eye, then open it and close
your right eye. What eye has the object lined
up?
That is your dominant eye
Good or evil?
Optical Illusion
Face or a liar?
One man? Or 2 people and a pet?
• https://www.youtube.com/watch?v=FxMCzyt
L0k8
This is not animated
Not animated
• What's Happening: in the retina of your eyes, there are
3 types of color receptors (cones) that are most
sensitive to either red, blue or green. When you stare
at a particular color for too long, these receptors get
"tired" or "fatigued.". After looking at the flag with the
strange colors, your receptors that are tired do not
work as well. Therefore, the information from all of the
different color receptors is not in balance. Therefore,
you see different color "afterimages"...in this case I
have used the "mirror" colors so you see the proper
colors in the afterimage. You can also see that your
vision quickly returns to normal since the afterimage
does not last for more than about 5 seconds.
YOU ARE GOING TO TEST WHY YOU
NEED TWO EYES
SET UP
+
-
Optic nerve meeting eye – blind spots
• Two eyes are better than one, especially when it comes
to depth perception. Depth perception is the ability to
judge objects that are nearer or farther than others. To
demonstrate the difference of using one vs. two eye to
judge depth hold the ends a pencil, one in each hand.
Hold them either vertically or horizontally facing each
other at arms-length from your body. With one eye
closed, try to touch the end of the pencils together.
Now try with two eyes: it should be much easier. This is
because each eye looks at the image from a different
angle. This experiment can also be done with your
fingers, but pencils make the effect a bit more
dramatic.
• o the one on the right. The actual dimensions of the circles are not
too important and you don't have to color the circles. Place the
target on the ground about five feet in front of you. Have a friend
stand near the target. Have your friend hold out an ink marker with
the tip pointing down. Close one eye. Tell your friend to move
forward or backward or side to side until you think the marker
would hit the center of the target if it was dropped. Tell your friend
to drop the marker when you think the marker is over the target
center. The marker should leave a spot where it hit the target. Try it
10 times with one eye closed and add up the "score" for the 10
drops. Now try it with both eyes opened (get a different color
marker when you use 2 eyes to see the difference on the target). Is
your score better when you use two eyes? Materials:
• Paper for target
• Markers (two colors)