5.9 Neurons

5.9 Neurons
1 / 25
volgende
Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 1

In deze les zitten 25 slides, met interactieve quizzen en tekstslides.

Onderdelen in deze les

5.9 Neurons

Slide 1 - Tekstslide

The Nervous system
The nervous system controls your muscles 
-walk / write / exercise 
-swallowing / blinking / breathing

-Central nervous system vs. 
-Peripheral nervous system


Slide 2 - Tekstslide

The central nervous system (CNS)

Slide 3 - Tekstslide

Nerve cells / neurons 
  • Sense organs (receptors) send messages to the CNS
via Sensory neurons

  • Muscles and glands (effectors) CNS send messages telling them wat to do 
via Motor neurons
  • Interneurons  are the connections between sensory and motorneurons.(in the spine and the brain)

Slide 4 - Tekstslide

Slide 5 - Tekstslide

Slide 6 - Tekstslide

Slide 7 - Tekstslide

The message
-Nerve impulses (electrical signals)
-Via the axon of the nerve cell
-Fatty sheat around axons make the impuls travel faster



Slide 8 - Tekstslide

Dendrite
Cell body
Nucleus
Axon
Fatty sheath
Synapse

Slide 9 - Sleepvraag

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 10 - Quizvraag

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 11 - Quizvraag

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 12 - Quizvraag

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 13 - Quizvraag

Sensory neurons carry information


A
away from the brain.
B
both to and from the brain.
C
towards the brain.
D
within the brain

Slide 14 - Quizvraag

True
False
Motor (efferent) neurons carry messages to the central nervous system.
The nucleus of a neuron is found outside the cell body (soma)

Slide 15 - Sleepvraag

Motor Neuron
Relay neuron
Sensory neuron
Found in visual system, brain, and spinal cord, pass informatiion on
carry electrical impulses away from the brain and spinal cord
Take information from sense organs to the brain and spinal cord

Slide 16 - Sleepvraag

homework
tuesday: study page 136/137 (5.9)
do excercises 45 till 50, write down difficult words!

friday: study 5.9 completely
do excercises 51 till 56

Slide 17 - Tekstslide

questions?
  • about page 136, 137 
  • difficult words?
  • the workbook?

Slide 18 - Tekstslide

Dendrite
Cell body
Nucleus
Axon
Fatty sheath
Synapse

Slide 19 - Sleepvraag

nerves

Slide 20 - Tekstslide

spinal cord - grey and white matter

Slide 21 - Tekstslide

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 22 - Tekstslide

Reflex arcs
W
Stimulus? 
Receptor? 
Effector? 
Response? 

Slide 23 - Tekstslide

Reflex arcs
Stimulus = hot flame 
Receptor = heat sensor in the skin 
Effector = muscles in your arm
Response = moving your hand away from the hot object. 

Slide 24 - Tekstslide

Reflex or not???
Reflex
Reflex
concious
trained reflex

Slide 25 - Sleepvraag