The supraglenoid tubercle is a structural feature on the scapula bone (also known as the shoulder blade or shoulder bone).
Location of the supraglenoid tubercle:
The location on the left scapula bone of the supraglenoid tubercle is indicated in the labelled diagrams of the scapula shown on the right (lateral view of scapula bone) and below (posterior and anterior views of scapula bone).
The position of the supraglenoid tubercle on the scapula bone can be described in words as "immediately below the glenoid cavity".
About the supraglenoid tubercle:
The supraglenoid tubercle itself is a slightly raised, so one could say 'protruding', surface or 'projection' of bone.
Recall from general knowledge of the features and markings on bones that a tubercle is typically a small tuberosity, i.e. projection, that may also be described as a round nodule or warty outgrowth.
In general 'processes' and 'projections' on bones are often surfaces to which connective tissues e.g. ligaments and tendons are attached. In the case of the supraglenoid tubercle the attachment is to the long head of the Biceps Brachii muscle of the upper-arm. That is:
The supraglenoid tubercle is the part of the scapula (bone) to which the long head of the biceps brachii (muscle) attaches.
Where does the term "supraglenoid tubercle" come from ?
- 'Supraglenoid' comes from the Latin word 'supra' meaning above and the word 'glenoid' meaning socket or cavity.
- 'Tubercle' is also from a Latin word, in this case the word 'tuber' meaning lump, in combination with the word ending used to indicate 'small', i.e. a small lump.
In the past medical students were expected to have a good background in Latin (language). This is an example of how that knowledge was useful.
More about bones and features on bones:
- Structures and functions of bones (an overview about the skeletal system)
- Types of bones, such as long bones, short bones, flat bones, etc.
- Bone markings and features on bones of the human body
- Types of joints, such as immoveable, slightly moveable and freely moveable joints
- Diagram of the human skeleton
- Overview of types of conditions and disorders of the skeletal system
For further information see also books about orthopaedics.