B&S LESSON 2

HAVE READY
- HW FOR LESSON 2 UPLOADED
- YOUR NOTES
- KERBOODLE PAGE 110
- LESSON UP

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Slide 1: Slide
BiologieMiddelbare schoolhavoLeerjaar 2

This lesson contains 23 slides, with interactive quizzes and text slides.

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