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The triceps, or triceps brachii (Latin for "three-headed muscle of the arm"), is a large muscle on the back of the upper limb of many vertebrates. It consists of three parts: the medial, lateral, and long head. [1] It is the muscle principally responsible for extension of the elbow joint (straightening of the arm).
The triangular interval (also known as the lateral triangular space, [1] lower triangular space, [2] and triceps hiatus) is a space found in the axilla. It is one of the three intermuscular spaces found in the axillary space. The other two spaces are: quadrangular space and triangular space. [3]
triceps brachii: 2 1 brachialis: Upper Limb, Arm, Anterior compartment, right/left ... lateral belly: anterior interosseous nerve (median nerve)
The lateral intermuscular septum extends from the lower part of the crest of the greater tubercle of the humerus, along the lateral supracondylar ridge, to the lateral epicondyle; it is blended with the tendon of the deltoid muscle, gives attachment to the triceps brachii behind, and to the brachialis, brachioradialis, and extensor carpi radialis longus muscles in front.
While executing a rope push-down, the palms face in and the arms internally rotate while pushing down. This variation works all three parts of the triceps, but especially the lateral head (coloured yellow Figure 2). [1] Figure 2: The triceps muscle, showing the lateral head (yellow), the long head (red) and the medial head (green).
Lateral: the long head of the triceps; Superior: Teres minor; For the superior border, some sources list the teres minor, [2] [5] while others list the subscapularis. [6]
The infraglenoid tubercle is the part of the scapula from which the long head of the triceps brachii muscle originates. The infraglenoid tubercle is a tubercle located on the lateral part of the scapula, inferior to (below) the glenoid cavity. The name infraglenoid tubercle refers to its location below the glenoid cavity.
The lateral raise (or shoulder fly) is performed while standing or seated, with hands hanging down holding weights, by lifting them out to the sides until just below the level of the shoulders. A slight variation in the lifts can hit the deltoids even harder, while moving upwards, just turn the hands slightly downwards, keeping the last finger ...