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The biceps is one of three muscles in the anterior compartment of the upper arm, along with the brachialis muscle and the coracobrachialis muscle, with which the biceps shares a nerve supply. [1] The biceps muscle has two heads, the short head and the long head, distinguished according to their origin at the coracoid process and supraglenoid ...
The biceps femoris (/ ˈ b aɪ s ɛ p s ˈ f ɛ m ər ɪ s /) is a muscle of the thigh located to the posterior, or back. As its name implies, it consists of two heads; the long head is considered part of the hamstring muscle group, while the short head is sometimes excluded from this characterization, as it only causes knee flexion (but not hip extension) [1] and is activated by a separate ...
Between the vastus lateralis and the adductor magnus two muscles are attached: the gluteus maximus muscle inserted above, and the short head of the biceps femoris muscle originating below. Between the adductor magnus and the vastus medialis four muscles are inserted: the iliacus muscle and pectineus muscle above; the adductor brevis muscle and ...
Coracobrachialis muscle arises from the (deep surface of the) apex of the coracoid process of the scapula (a common origin with the short head of the biceps brachii [1] [2]). It additionally also arises from the proximal portion of tendon of origin of the biceps brachii muscle. [1]
Muscle Location Origin Insertion Artery Nerve ... biceps brachii: Upper Limb, Arm, Anterior compartment, right/left short head: coracoid process of scapula long head: ...
The coracoid process acts as an attachment and origin for a large number of muscles (attached muscles not labeled here). The coracoid process is a thick curved process attached by a broad base to the upper part of the neck of the scapula; [2] it runs at first upward and medially; then, becoming smaller, it changes its direction, and projects forward and laterally.
The origin of a muscle is the bone, typically proximal, which has greater mass and is more stable during a contraction than a muscle's insertion. [14] For example, with the latissimus dorsi muscle, the origin site is the torso, and the insertion is the arm. When this muscle contracts, normally the arm moves due to having less mass than the torso.
The common fibular nerve innervates the short head of the biceps femoris muscle via a motor branch that exits close to the gluteal cleft. [2] The remainder of the fibular-innervated muscles are innervated by its branches, the deep fibular nerve and superficial fibular nerve .