GENERAL ANATOMY
MUSCLE ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Muscle attachment (stationary)b) Attachment for pulling
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What the muscle doesb) Where the muscle pulls
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Attachment for pullingb) Muscle attachment (stationary)
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Where the muscle pullsb) What the muscle does
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Detailed explanation-1: -The origin is the attachment site that doesn’t move during contraction, while the insertion is the attachment site that does move when the muscle contracts.
Detailed explanation-2: -A skeletal muscle attaches to bone (or sometimes other muscles or tissues) at two or more places. If the place is a bone that remains immobile for an action, the attachment is called an origin. If the place is on the bone that moves during the action, the attachment is called an insertion.
Detailed explanation-3: -Origin is relatively the less movable end of the muscle/tendon that is attached to a bone. Insertion is the more flexible end of the muscle that is usually attached to a bone via tendons. It is the proximal end that is attached to the less movable bone. It is the distal end that is attached to the more movable bone.
Detailed explanation-4: -Muscle Origin Definition Muscle origin refers to a muscle’s proximal attachment-the end of the muscle closest to the torso. For example, the bicep muscle’s origin is located at the shoulder.
Detailed explanation-5: -When a muscle contracts, the origin pulls the insertion closer. Always! Muscles pull. The origin is the fixed point that doesn’t move during contraction, while the insertion does move.