triceps muscle


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Related to triceps muscle: Biceps Muscle

triceps muscle

Arm muscle. Origin: infraglenoid tubercle of scapula, posterior of proximal humerus, posterior of distal humerus. Insertion: olecranon process. Nerve: radial (C6-C8). Action: extends forearm.
Synonym: triceps brachii muscle See: arm for illus. (Muscles of the Arm)
See also: muscle
Medical Dictionary, © 2009 Farlex and Partners

triceps muscle

A three-headed muscle attached to the back up the upper arm bone (humerus) and to the outer edge of the shoulder-blade (scapula) and running down the back of the arm to be inserted by a strong TENDON into the curved process (olecranon process) on the back of one of the two forearm bones (the ulna). The triceps muscle straightens the elbow in opposition to the biceps muscle, which bends it.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
A) Relative triceps muscle lengths at peak Achilles tendon force for each exercise; B) Change in triceps length during each exercise; C) Maximum and minimum triceps lengths for each exercise.
STD of triceps muscle w as found to be the lowest value (0.14) among other STD values, whereas STD of biceps and FCR muscles were the highest ones to be 3.01 and 3.68.
The fractured olecranon process is usually displaced proximally by the insertion of the triceps muscles. This distractive force must be controlled to allow fracture healing.
Dynamic US can help to demonstrate abnormal dislocation of the ulnar nerve, with and without snapping triceps syndrome through continual visualisation of the ulnar nerve and triceps muscle in active elbow flexion and extension.
Figure 3 presents the EMG profiles of the triceps muscle for an individual that showed a minimal change in average muscle activation when a Swiss ball replaced an exercise bench during push up exercises.
When your arm is straight your triceps muscle works.
It is the Eagles who have offensive problems this time though, with breakaway threat Brian Westbrook out of commission with a torn triceps muscle. Duce Staley and Correll Buckhalter will share the load at running back but Westbrook will be sorely missed, both for his terrific acceleration and his punt returns.
But the Eagles (12-4) are likely to be without Brian Westbrook, who leads the team with 13 touchdowns, for the post-season after the running back/returner suffered a torn right triceps muscle in the first half.
The triceps muscle makes up two-thirds of the upper arm.
Young, 32, only played in four games last season before tearing a triceps muscle, and had two sacks last year before he was sidelined.
It could be his first game back since tearing his triceps muscle in Week 6 against the Dallas Cowboys.