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B&S LESSON 2
HAVE READY
- HW FOR LESSON 2 UPLOADED
- YOUR NOTES
- KERBOODLE PAGE 110
- LESSON UP
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Biologie
Middelbare school
havo
Leerjaar 2
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Items in this lesson
HAVE READY
- HW FOR LESSON 2 UPLOADED
- YOUR NOTES
- KERBOODLE PAGE 110
- LESSON UP
Slide 1 - Slide
HW FOR TODAY:
ANY PROBLEMS?
Slide 2 - Slide
CEREBELLUM
CEREBRUM
MEDULLA
THALAMUS
Slide 3 - Drag question
Slide 4 - Slide
Slide 5 - Slide
Slide 6 - Slide
MOST IMPORTANT STEPS OF THIS CHAPTER:
coordinator
effector
stimuli
receptor
response
Slide 7 - Drag question
MOST IMPORTANT STEPS OF THIS CHAPTER:
stimuli --> receptor --> coordinator --> effector --> respons
Slide 8 - Slide
Slide 9 - Slide
Dendrite
Cell body
Nucleus
Axon
Fatty sheath
Synapse
Slide 10 - Drag question
Synapses
Gap between 2 neurons
When an impulse reaches the end of the axon it produces a chemical:
neurotransmitters
Diffuses across the gap and binds receptors of in the membrane of the next neuron
It starts off a impulse in the next neuron
One end can make it so impulses travel in one direction!
Impulse
Impulse
Slide 11 - Slide
Synapses
2 other functions:
Resistor:
enough impulses are needed to start an impulse at the next neuron.
Junction box:
a neuron can pass an impulse to a number of neurons
Drugs affect synapses
Alchohol (slows reactions down)
Impulse
Impulse
Slide 12 - Slide
Synapse at the muscle
Slide 13 - Slide
Reflex arcs
You take away your hand from an hot object very fast
Automatically, why?
Reflexes protect you
Why do you think a reflex is unconscious?
Signal does not go to the brain immediately
It goes to the spinal cord and back (short circuit)
Slide 14 - Slide
Reflex arcs
W
Stimulus?
Receptor?
Coordinator?
Effector?
Response?
Slide 15 - Slide
Reflex arcs
Stimulus = hot flame
Receptor = heat sensor in the skin
Coordinator = spinal cord
Effector = muscles in your arm
Response = moving your hand away from the hot object.
Slide 16 - Slide
Which will receive a message by motor neurons?
A
Receptors in your skin
B
The spinal cord
C
The muscles in your arm
D
The brain
Slide 17 - Quiz
Which will send a message along sensory neurons?
A
Receptors in your skin
B
The spinal cord
C
The muscles in your arm
D
The brain
Slide 18 - Quiz
You get an itch in your elbow. What is the receptor in this reaction?
A
Receptors in your skin
B
The itch itself
C
muscles that move your arm to scratch
D
The brain that decides to scratch the elbow
Slide 19 - Quiz
You get an itch in your elbow. What is the coordinator in this reaction?
A
Receptors in your skin
B
The itch itself
C
muscles that move your arm to scratch
D
The brain that decides to scratch the elbow
Slide 20 - Quiz
You get an itch in your elbow. What is the response in this reaction?
A
Receptors in your skin
B
The itch itself
C
muscles that move your arm to scratch
D
The brain that decides to scratch the elbow
Slide 21 - Quiz
You get an itch in your elbow. What is the stimulus in this reaction?
A
Receptors in your skin
B
The itch itself
C
muscles that move your arm to scratch
D
The brain that decides to scratch the elbow
Slide 22 - Quiz
HW FOR LESSON 3:
- do the worksheets on classroom
- answer in a google docs
hand this in on classroom please.
Slide 23 - Slide
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