body in action(c) coordination
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Body in Action(c) Coordination . SQA QUESTIONS. Eye and Ear WYSK. Judgement of d_______ is more accurate using ____eyes rather than one - PowerPoint PPT PresentationTRANSCRIPT
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Body in Action(c) Coordination
SQA QUESTIONS
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Eye and Ear WYSK
• Judgement of d_______ is more accurate using ____eyes rather than one
With binocular vision the i_____ formed on the retina of each eye is d__________and the brain is able to use the difference to work out how f___ a_____ something is
istancetwo
mageifferent
ar way
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Retina
Optic Nerve
Lens
Iris
Pupil
Cornea
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Part of the eye Function ( what it does)
cornea light enters the eye through the transparent cornea
iris Controls the amount of light entering the eye by making the pupil bigger or smaller
pupil light passes through this hole in the middle of the iris
lens Focusses the light onto the retina
retina Image forms here as light energy is changed into nerve impulses
optic nerve Passes nerve impulses to the brain
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cornea
lens
retina1 3
2
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2
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5
D
C
A
EB
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contracting
pupil
retina
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The ear WYSK
• The judgement of the d______ of sound is more accurate using _____ ears rather than one
The s_____ c_______ c_____ are at right a______ to each other so that ___________of the head can be d_________ in ____ directions
irection two
emi ircular analsngles movement
etected all
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Middle ear bones
Semi-circular canals
♫
Outer ear canal
Ear drumCochlea
Auditory nerve
Eustachian tube (to back of throat)
Structure
Outer ear
Middle ear
Inner ear
The outer + middle ear are air-filled, the inner ear is liquid-filled
BONE
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Part Function
Ear drum Vibrates when sound waves reach it
Middle ear bones Carry the vibrations from the ear drum to the liquid-filled inner ear
Cochlea Converts sound vibrations in the liquid to nerve impulses
Auditory nerve Carries nerve impulses from the cochlea to the brain
Semi-circular canals Balance
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2
3
semi circular canals
auditory nerve
cochlea
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Ear drum
Middle ear bones
semi circular canals
Auditory nerve
cochlea
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ear drumAB
cochleacarries nerve impulses to brain
balance
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At right angles to each other
detects movement of head in all directions
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3
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cornea retina
lens
Semi circular canals Auditory nerve
cochlea
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Nervous system WYSK• The nervous system is composed of the
b______, s_______ c_____ and n______• The central nervous system (_ _ _)is composed
of the b________ and s______ c______• Nerves carry i____________ from the s______
__ the CNS and _____ the CNS to the m________
• The CNS s_____ out i___________ from the s_______ and sends m_________ to those m______ which make the a_________ r_________
rain pinal ord erves
rain pinal ord CNS
nformation enses to from
uscles orts nformation
enses essages uscles ppropriate
esponse
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Direction of sound
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A
B
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sense organ (receptor)
sensory nerve
CNS motor nerve
Muscle (effector)
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sense organ (receptor)
sensory nerve
relay nerve
CNS motor nerve
Muscle (effector)
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B C E A D
E
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B E D F A C
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cerebrum
cerebellum
spinal cordmedulla
pituitary gland
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cerebrum
cerebellum
Memory, reasoning, imagination, control of muscles/senses etcBalance and muscle coordination
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Memory, reasoning, imagination, control of muscles/senses etc
cerebrum
medulla
A
B medulla
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L
M K
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D cerebrum cerebellum controls balance and muscle coordination
controls HR and breathing
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