- published: 30 Jul 2014
- views: 2237894
The triceps brachii muscle (Latin for "three-headed arm muscle") is the large muscle on the back of the upper limb of many vertebrates. It is the muscle principally responsible for extension of the elbow joint (straightening of the arm).
It is sometimes called a three-headed muscle because there are three bundles of muscles, each of different origins, joining together at the elbow. Though a similarly named muscle, the triceps surae, is found on the lower leg, the triceps brachii is commonly called the triceps.
Historically, the plural form of triceps was tricipites, a form not in general use today; instead, triceps is both singular and plural (i.e., when referring to both arms). The triceps also make up approximately 2/3 of the muscle mass in the arm.[citation needed]
The long head arises from the infraglenoid tubercle of the scapula. It extends distally anterior to the teres minor and posterior to the teres major.
The medial head arises distally from the groove of the radial nerve; from the dorsal (back) surface of the humerus; from the medial intermuscular septum; and its distal part also arises from the lateral intermuscular septum. The medial head is mostly covered by the lateral and long heads, and is only visible distally on the humerus.
Loaded trigger finger
I don't wanna settle- second best
Lack of idle chatter
freedom from the morons you call friends
(chorus)
Flowers- on the dash board
Spending hours- talking to the wall
Power- where we're going
if you don't already know
I found out- too late
I found it out
Your too late smile's a frown- too late
I found it out
Silence now for hours
I don't need to know if you're impressed
Why should it matter?
You must have another- to arrest
Flowers- on the dash board
Spending hours- talking to the wall
Power- where we're going
as if you don't already know
I found out- too late
I found it out
Your too late smile's a frown- too late