Articulating bones are bones that move relative to each other at a fixed joint. (the 2 bones that meet at a joint)
(e.g. - humerus + ulna
knee - femur + tibia)
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What are the functions of the skeletal system?
1) Support
2) Movement
3) Posture
4) Protection
5) Blood Cell production
6) Storage of minerals
(BMPPSS)
The intercoastal muscles are found between the ribs and are used during the process of breathing.
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What are tendons?
Tendons are a tough yet flexible band of fibrous tissue that joins muscle to bone.
(When a muscle contracts the effort is transferred to the bone and movement is produced.)
(connects muscle to bone)
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What is a synovial joint?
What are the two types of this joint?
A synovial joint is a freely moveable joint in which the bones' surfaces are covered by cartilage.
Ball and socket and hinge.
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What is a ligament?
A ligament is a short band of tough and flexible tissue that connects bones together and stabilises the joint.
(connects bone to bone, stops any unwanting movement and helps to stop dislocation)
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What is cartilage?
Cartilage is a tough, elastic, fibrous connective tissue that prevents friction at a joint.
(stops the bones from rubbing, acts as a shock absorber and covers both ends of the bones)
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What is rotation?
What is abduction?
Rotation is a twisting action that takes place when a body part turns along its long axis, as if on a pivot.
Movement away from the midline of body.
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What is circumduction?
What is flexion?
A circular movement at a joint that combines flexion, extension, abduction and adduction.
The angle at a joint decreases as a limb bends.
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What is adduction?
What is extension?
Movement towards the midline of the body.
The angle at a joint increases as a limb straightens.
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What are antagonistic muscles?
Antagonistic muscles are when a pair of muscles perform the opposite action to each other therefore either contracting or relaxing.
(e.g. leg back preparing:
hamstring = agonist
quadricep = antagonist)
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Agonist
The muscle that works to create movement.
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Antagonist
The muscle that works in the opposite way to the agonist, relaxing to allow movement.
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Fixator
A muscle that acts as a stabilizer, helping the agonist to work effectively to create movement.
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Other cards in this set
Card 2
Front
What is the definition of articulating bones?
Back
Articulating bones are bones that move relative to each other at a fixed joint. (the 2 bones that meet at a joint)
(e.g. - humerus + ulna
knee - femur + tibia)
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