MP4 Nervous system introduction and reflex arc

Unit: Homeostasis
Topic: Nervous system and neurones

Lesson outline: 3 interactive video's about 5-8min each incl MCquestions.
Remainder of the time: HW (see last slide)

Aims:
- Outline the CNS, PNS
- describe three types of neurones
- compare hormonal and neural regulation (link to the unit of homeostasis)
- describe a reflex arc pathway and outline the significance from an evolutionary perspective

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Slide 1: Slide
BiologieMiddelbare schoolhavo, vwoLeerjaar 3,4

This lesson contains 36 slides, with interactive quizzes, text slides and 3 videos.

time-iconLesson duration is: 60 min

Items in this lesson

Unit: Homeostasis
Topic: Nervous system and neurones

Lesson outline: 3 interactive video's about 5-8min each incl MCquestions.
Remainder of the time: HW (see last slide)

Aims:
- Outline the CNS, PNS
- describe three types of neurones
- compare hormonal and neural regulation (link to the unit of homeostasis)
- describe a reflex arc pathway and outline the significance from an evolutionary perspective

Slide 1 - Slide

Slide 2 - Slide

Electric impuls

Slide 3 - Slide

Slide 4 - Slide

The message is:
- is super fast 
- called impulses (electrical signals)
- goes via the axon of the nerve cell
- has fatty sheat: myelin sheath around axons make the impuls travel faster



Slide 5 - Slide

Slide 6 - Slide

Responding to a stimulus
1. Receptor
Sensory cells in sense organ
2. Sensory neuron
Gathers and sends impulses from the senses
3. Inter neuron
Communicates between the different parts of the CNS
4. Spinal cord / brain
5. Motor neuron
->
Sends impulses to effector cells 
6. Effector
Muscles, glands

Slide 7 - Slide

Slide 8 - Slide

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 9 - 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 10 - Quiz

Motor Neuron
Inter 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 11 - Drag question

7

Slide 12 - Video

00:19
Which two organ systems coordinate these responses and behaviors (homeostasis)?
A
circulatory system
B
muscular system
C
endocrine system
D
nervous system

Slide 13 - Quiz

01:02
How is the nerve cell adapted to it's function?
A
long body
B
thin body
C
branched ends (synapses)
D
all of the above

Slide 14 - Quiz

02:02
Components of the CNS (central nervous system)
A
skull
B
peripheral nerves
C
brain
D
spinal cord

Slide 15 - Quiz

02:11
Examples of sensory information are
A
body temperature
B
body posture
C
all answers are correct
D
light/sound

Slide 16 - Quiz

02:47
Sensory nerves receive stimuli through sensors
A
true
B
false

Slide 17 - Quiz

02:49
Motor neurones send electrical impulses to effectors
A
true
B
false

Slide 18 - Quiz

03:07
Which characteristic of living organisms does this refer to using the MRS GREN mnemonic?

Slide 19 - Open question

5

Slide 20 - Video

01:06
What is the function of a motor neurone?
A
all answers are correct
B
pass information to effectors
C
pass information to glands
D
pass information to muscles

Slide 21 - Quiz

02:09
What is the name of the nerve endings (close to these gaps)?
A
sonopsis
B
synaps
C
synapsis
D
neurotransmitter

Slide 22 - Quiz

02:26
What type of nerve cell is seen on the left in this example? How do you know this?
A
sensory neurone, it has long dendrites and axon
B
motor neurone, it has one long axon and short dendrites

Slide 23 - Quiz

02:49
What is the name of the neurone in the middle?
A
relay neurone
B
intermediate neurone
C
all are correct
D
inter neurone

Slide 24 - Quiz

02:51
In which part of the nervous system are relay neurones found?
A
CNS Central Nervous System
B
PNS Peripheral nervous system

Slide 25 - Quiz

4

Slide 26 - Video

00:45
Note taking 5-7min
Review your knowledge on the nerves and nervous sytem. In your notebook ,create a mindmap, complete your glossary or draw an annotated diagram using the following key terms:

3 types of neurones, CNS, PNS, receptors, sensors, effectors (muscles, glands)

Slide 27 - Slide

01:08
Aims:
You need to understand what a reflex pathway is, how it works and be able to apply this knowledge when touching a hot item. The other examples are extension material only.

Slide 28 - Slide

01:32
Reflex arc= unconscious response to a stimulus (stimulus does initially not reach the brain)
Innate behaviour = behaviour controlled by genes. Reflex arc is an example of innate behaviour and is thus the same for organisms of the same species (regardless their environment or learning).

Slide 29 - Slide

01:48
Last question: select the correct reflex arc pathway
A
motor -> relay -> sensory
B
sensory -> relay -> motor
C
sensory -> relay -> brain -> motor
D
sensory -> motor

Slide 30 - Quiz

Slide 31 - Link

Review the aims of this lesson and write down any questions you have on the next slide:
Aims:
- Outline the CNS, PNS
- describe three types of neurones
- compare hormonal and neural regulation (link to the unit of homeostasis)
- describe a reflex arc pathway and outline the significance from an evolutionary perspective

Slide 32 - Slide

What I do not understand / questions I have about the content are:

Slide 33 - Open question

What did you think of this lessonup?
A
useful
B
somewhat useful
C
very useful
D
did not learn anything

Slide 34 - Quiz

Homework for next lesson
RSQ BFY pg 108-115
Choose 4 questions from the following:
Q2a&3 pg 217, Q1,2,4,5 pg 127 or Q16 pg 177
Complete the CNS and reflex arc WS in the handout

Slide 35 - Slide

The end of the lesson

Slide 36 - Slide