Infraglenoid tubercle

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Infraglenoid tubercle
Gray205 left scapula lateral view - Infraglenoid tubercle.png
Lateral view of left scapula
(infraglenoid tubercle labeled at center right)
Details
Identifiers
Latin tuberculum infraglenoidale
TA98 A02.4.01.021
TA2 1164
FMA 23266
Anatomical terms of bone

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.

Contents

Function

The infraglenoid tubercle is the origin of the long head of the triceps brachii muscle. [1] [2] It helps to stabilise the muscle origin. [1]

Additional images

See also

Related Research Articles

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<span class="mw-page-title-main">Scapula</span> Bone that connects the humerus (upper arm bone) with the clavicle (collar bone)

The scapula, also known as the shoulder blade, is the bone that connects the humerus with the clavicle. Like their connected bones, the scapulae are paired, with each scapula on either side of the body being roughly a mirror image of the other. The name derives from the Classical Latin word for trowel or small shovel, which it was thought to resemble.

<span class="mw-page-title-main">Humerus</span> Long bone of the upper arm

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<span class="mw-page-title-main">Biceps</span> Muscle on the front of the upper arm

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The triceps, or triceps brachii, is a large muscle on the back of the upper limb of many vertebrates. It consists of 3 parts: the medial, lateral, and long head. It is the muscle principally responsible for extension of the elbow joint.

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The teres major muscle is a muscle of the upper limb. It attaches to the scapula and the humerus and is one of the seven scapulohumeral muscles. It is a thick but somewhat flattened muscle.

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The coracobrachialis muscle is a muscle in the upper medial part of the arm. It is located within the anterior compartment of the arm. It originates from the coracoid process of the scapula; it inserts onto the middle of the medial aspect of the body of the humerus. It is innervated by the musculocutaneous nerve. It acts to adduct and flex the arm.

<span class="mw-page-title-main">Bicipital groove</span> Groove in the humerus bone

The bicipital groove is a deep groove on the humerus that separates the greater tubercle from the lesser tubercle. It allows for the long tendon of the biceps brachii muscle to pass.

<span class="mw-page-title-main">Glenoid fossa</span> Part of the shoulder

The glenoid fossa of the scapula or the glenoid cavity is a bone part of the shoulder. The word glenoid is pronounced or and is from Greek: gléne, "socket", reflecting the shoulder joint's ball-and-socket form. It is a shallow, pyriform articular surface, which is located on the lateral angle of the scapula. It is directed laterally and forward and articulates with the head of the humerus; it is broader below than above and its vertical diameter is the longest.

<span class="mw-page-title-main">Glenohumeral ligaments</span>

In human anatomy, the glenohumeral ligaments (GHL) are three ligaments on the anterior side of the glenohumeral joint. Reinforcing the anterior glenohumeral joint capsule, the superior, middle, and inferior glenohumeral ligaments play different roles in the stability of the head of the humerus depending on arm position and degree of rotation.

<span class="mw-page-title-main">Supraglenoid tubercle</span> Region of the scapula from which the long head of the biceps brachii muscle originates

The supraglenoid tubercle is a region of the scapula from which the long head of the biceps brachii muscle originates. It is a small, rough projection superior to the glenoid cavity near the base of the coracoid process. The term supraglenoid is from the Latin supra, meaning above, and glenoid, meaning socket or cavity.

<span class="mw-page-title-main">Spine of scapula</span> Bony plate on the scapula

The spine of the scapula or scapular spine is a prominent plate of bone, which crosses obliquely the medial four-fifths of the scapula at its upper part, and separates the supra- from the infraspinatous fossa.

<span class="mw-page-title-main">Glenoid tubercles</span>

The glenoid tubercles are two small bony eminences located above and below the glenoid cavity on the scapula. The glenoid tubercles consist of the supra- and the infraglenoid tubercle. The Latin terms supra and infra meaning above and below respectively refers to the tubercles location in relation to the glenoid cavity. The Latin term glenoid meaning socket or cavity refers to the glenoid cavity.

References

PD-icon.svgThis article incorporates text in the public domain from page 205 of the 20th edition of Gray's Anatomy (1918)

  1. 1 2 Nasu, Hisayo; Baramee, Phichaya; Kampan, Natnicha; Nimura, Akimoto; Akita, Keiichi (2019-03-01). "An anatomic study on the origin of the long head of the triceps brachii". JSES Open Access. 3 (1): 5–11. doi: 10.1016/j.jses.2019.01.001 . ISSN   2468-6026. PMC   6443837 . PMID   30976729.
  2. Handling, Matthew A.; Curtis, Alan S.; Miller, Suzanne L. (2010-01-01). "The origin of the long head of the triceps: A cadaveric study". Journal of Shoulder and Elbow Surgery. 19 (1): 69–72. doi:10.1016/j.jse.2009.06.008. ISSN   1058-2746. PMID   19748801.