Body Coordination
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Transcript of Body Coordination
Chapter 2
Understanding body coordinationIf you come across a frightening situation
like this, what would be your reactions?
Body coordination?
Is a processs by which different parts of the body work together to bring about the correct response.
Tindakbalas yang betul…
Jari terkena benda panas:
Ternampak hantu :
Kena cubit :
Terbau bau makanan :
Lets do this….
Instruction..1.Hear what I say n do it…Instructio
n“ JUMP”
Ears hear the sound
Brain receive
the message
Leg muscles contract to jump
Mosquito bite
Itch (gatal) on your
arm.
Brain receive
the message
Muscles of the other
arm contract to hit the mosquito
For body coordination to take place ,there must be a stimulus
Stimuli
Activity
Stimulus (ransangan)
Receptor Interpreter Effector
1 Sound of “JUMP” Ears Brain Leg muscles
2 Book dropping Ears, eyes Brain Back muscles and arm muscles
3 Mosquito bite skin Brain Arm muscles
4 Smell of food Nose Brain Salivary gland (kelenjar air liur)
For body coordination to take place ,there must be a stimulus
Flow chart for body coordination
Endocrine
system
(glands secrete
hormones)
The pathway of a body coordination
Why body coordination is important? What happen if you don’t withdraws
your hand quickly after touching hot kettle?
What happen if you don’t run quickly after seeing a tiger?
Is it a normal person if you not cry after hearing a sad tragedy?
Does body coordination important?
The important of body coordination….
Understanding the human nervous system
Made up of
Consist of
Functions…
Central nervous system
Spinal nerves
Function :
Connecting the spinal cord with the receptors and affectors in the body
Cranial nervesFunction :
Connecting the brain with the
sensory organs and internal
organs such as the heart and
lungs
Cranial nerves
Neuron
The human nervous system is made up of nerve cells called neurones
Neurones :transmit impulses from receptors to effectors
Neurons dendrites
Myelin shealth(selaput mealin)
dendrones
Cell body
Axon
Nerves Ending
Part of Neurone and its function
3 type of neurones
Sensory neuroneConduct impulses from the receptors in the sensory organs to the central nervous system
Relay neurones (lari berganti ganti?)
Conduct impulses from the sensory neurone to the motor neurone(menghubungkan sensory neuron dengan motor neurone)
Motor neurone
Carries impulses to muscles and effector in the body
Neurone Structure differences
Sensory neuron Interneuron (relay neuron)
Motor neurone
Characteristic and functionsType of neurone Characteristic
•The cell body lies in between the axon and the dendron(badan sel berada diantara axon dan
characteristic
Sensory neurone Relay neurone Motor neurone
Where is it located
At receptors or sensory organ
Found only in CNS (brain and spinal cord)
Effectors
Location of cell body
Situated on one side
At the centre Situated at one end
Axon Short Short long
Myelin sheath
Present Absent Present
Pathway of impulse
From receptor to CNS
From sensory neuron to motor neuron
Out from CNS to effector
Functions Receives impulses from sensory organ
Receives impulses from sensory neuron to motor neuron
Transmit impulses from CNS to effector to bring about a response
• They all have a cell body•They all have dendrites and dendrones•They all can receive and send impulses
The similarities
1.What is body coordination ?2. state 3 important of body coordination3.Situation : a boy being chased by a dog
a)What is the stimulus in this situation?b)What is the response?c)Which part of the body cooordinates this reaction?
Exercise..(body coordination)