There are two ends of attachment of skeletal muscle. The "origin", and the "insertion". The "insertion" end refers to the end which is attached to a moveable bone which this muscle will move when it is contracted. The "origin" end is usually the most distal attachment (in appendicular skeleton) this is the bone that the muscle attaches to, and DOES NOT MOVE. Example. Biceps brachii. Origin- connection to the humeral head Insertion- radius/ulna summary- contract your biceps muscle, and your radius and ulna will move. not your shoulder. The end.
The deltoid muscle is muscle used to move your arm. The deltoid's insertion is at the deltoid tuberosity of humerus. The deltoid is responsible for flexion and medial rotation of the humerus.
muscle origin
Skeletal
Skeletal (voluntary) and smooth (involuntary) muscles can be found in a chicken wing. Cardiac muscle is not found in a chicken wing because cardiac muscle is found in the heart.
Cardiac muscle.
origin
The "movable" end of a muscle is called the insertion. The "immobile" end is called the origin. Shortening, or contraction, of a muscle causes the origin and insertion to become closer to one another.
Insertion, as opposed to the origin
There are two points of attachment for a (skeletal) muscle, the origin and the insertion. The origin is the immovable (or slightly movable) part. The insertion moves towards the origin.
Insertion point, which most probably is a tendon.
The end of the muscle that is attached to the stationary bone is the point of origin. The muscle end that is attached to the moving bone is the point of insertion, and the action is what the muscle actually does.
The two attachment points are the origin and insertion. The origin is the immovable (or slightly moveable point. The insertion is the movable point. The insertion always moves towards the origin.
Skeletal muscles work together or in opposition Muscles only pull (never push) As muscles shorten, the insertion generally moves toward the origin Whatever a muscle (or group of muscles) does, another muscle (or group) "undoes"
SKELETAL (:
There are three types of muscle in your body: striated, smooth and cardiac. The striated muscle is also called skeletal muscle and it is this type of muscle that moves your joints. Skeletal muscles are attached by tendons to the bones that they act on.
skeletal muscles
smooth muscle, cardiac muscle and most glands