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Encyclopedia > Coracoacromial ligament
Coracoacromial ligament
The left shoulder and acromioclavicular joints, and the proper ligaments of the scapula. (Coraco-acromial visible at upper right.)
Latin ligamentum coracoaromiale
Gray's subject #82 316
Dorlands/Elsevier l_09/12492003

The Coracoacromial Ligament is a strong triangular band, extending between the coracoid process and the acromion. Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... In human beings, the coracoid process is a small hook-like structure that comes off the scapula to point forward. ... The acromion process, or simply the acromion, is an anatomical feature on the scapula. ...


It is attached, by its apex, to the summit of the acromion just in front of the articular surface for the clavicle; and by its broad base to the whole length of the lateral border of the coracoid process. The acromion process, or simply the acromion, is an anatomical feature on the scapula. ...


This ligament, together with the coracoid process and the acromion, forms a vault for the protection of the head of the humerus. The humerus is a long bone in the arm or fore-legs (animals) that runs from the shoulder to the elbow. ...


It is in relation, above, with the clavicle and under surface of the Deltoideus; below, with the tendon of the Supraspinatus, a bursa being interposed. The deltoid muscle is the muscle forming the rounded contour of the human shoulder. ... The supraspinatus is a relatively small muscle of the upper limb that takes its name from its origin from the supraspinous fossa superior to the spine of the scapula. ... Bursa (formerly known as Brusa or Prusa) is the capital of the Bursa Province in northwestern Turkey. ...


Its lateral border is continuous with a dense lamina that passes beneath the Deltoideus upon the tendons of the Supraspinatus and Infraspinatus. The Infraspinatus muscle is a lateral rotator of the glenohumeral joint and adductor of the arm. ...


The ligament is sometimes described as consisting of two marginal bands and a thinner intervening portion, the two bands being attached respectively to the apex and the base of the coracoid process, and joining together at the acromion.


When the Pectoralis minor is inserted, as occasionally is the case, into the capsule of the shoulder-joint instead of into the coracoid process, it passes between these two bands, and the intervening portion of the ligament is then deficient. Location The pectoralis minor muscle takes its origin from the 3rd to 5th ribs, near their costal cartilages. ...


This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


  Results from FactBites:
 
Joints of the Shoulder Complex (1100 words)
Coracohumeral ligament: supports the head of the humerus in the glenoid cavity as a rope and assists the glenohumeral ligaments in reinforcing the anterior portion of the glenohumeral joint.
Coracoacromial ligament: The coracoacromial ligament is stretched between the coracoid process and the acromion and completes, with the acromion and clavicle, a bony-ligamentous arch which covers the head of the humerus.
Along with the bony structures, the coracoacromial ligament creates a passageway for the exit of the supraspinatus (supraspinatus outlet), as it leaves its scapular origin to insert on the greater tuberosity of the humerus.
TIS Chapter 10 (4832 words)
Middle glenohumeral ligament: passes from the anterior margin of the glenoid fossa to the anterior aspect of the anatomical neck and lesser tuberosity of the humerus.
The subscapularis tendon and the middle glenohumeral ligament are important anterior stabilizers of the glenohumeral joint and function to limit lateral rotation of the humerus between 0 and 90 degrees of elevation.
Inferior glenohumeral ligament: attaches to the anterior, inferior, and posterior margins of the glenoid labrum medially and to the anatomical and surgical neck of the humerus laterally.
  More results at FactBites »

 
 

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