Body in Action (a) Movement
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Transcript of Body in Action (a) Movement
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Body in Action (a) Movement
SQA Questions
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What you should know -skeleton• The skeleton provides a f_______ for
s_______ and m_______ attachment• The skeleton p_______ the h____,
l______, b_____ and s_______ cord• Bone is composed of the components
f______ (elastic) f______ and h____ m________
• Bone is formed by l_______ c____
ramework
upport uscle
rotects eart ungs rain pinal
lexible ibres ard inerals
iving ells
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• A b____ and s_____ joint e.g. ________ allows m_______ in _ planes
• A h_____ joint e.g. _____ allows movement in ___ plane
all ocket hip / shoulder ovement
inge knee/elbow
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What you should know - joints
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What you should know - muscles• Muscles are attached to b_____ by t_____• When a muscle c______ it s_______ and
p___ on a tendon attached to a bone at a j_____
• Tendons are i________ so that a__ the f_____of a muscle c___________ is t__________ to the bone at a joint
• At a joint there are always t___ muscles. One muscle b_____ the joint + second muscle needed to s_________ the joint.
ones endons
ontracts ocket
ulls oint
nelastic ll orce ontraction ransferred
wo ends
traighten
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Synovial Joint p148 CREDIT
• A synovial joint is a joint l_________ by s________ fluid
• All b___ and socket and h_____ joints are synovial joints
• The h__, s_______, e______ and k____ are all synovial joints
ubricated ynovial
allinge
ip houlderlbow nee
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ligament
synovial membrane synovial fluid cartilage
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Name 1 – 4 in this ball and socket joint
synovial membrane
synovial membrane
ligament
ligament cartilage
synovial fluid
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Structure of a Synovial Joint p148 CREDIT
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3
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supportholds the two bones together
secretes synovial fluid
cushions the joint and reduces friction
lubricates the joint by reducing friction
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cartilage1
2
3
4
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ligament
ligament
synovial fluid
synovial
membranehead of femur
femur
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Synovial joint functions CREDIT Part of synovial joint function
bone support
ligament holds the two bones together
synovial membrane secretes synovial fluid
capsule surrounds the joint
cartilage cushions the joint and reduces friction
synovial fluid lubricates the joint by reducing friction
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2
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Cushions the joint / end of bones/ acts like a shock absorber
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Range of movement is less
in one plane/ two directions
Flexible fibres / hard minerals
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brain heart lungs spinal cord
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movement
support
ligament
Hard minerals
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skull brainRib cage heart and lungs backbone spinal cord
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cartilage
Synovial fluid
Synovial membrane
ligament
Synovial membrane
cartilageligament
B
D
Lubricates joint / Reduces friction
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C A
D
E
B
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Reduces friction
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One muscle bends joint
Tendons are inelastic / do not stretch
+ second muscle needed to straighten joint
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cartilagesynovial fluid
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s
tendon