Label the bone features (bone markings) of the scapula anterior view by clicking and dragging the labels to the correct location. Acromion Inferior angle Glenoid cavity Superior border Corocoid process Subscapular fossa Superior angle Reset Zoom
The Correct Answer and Explanation is:
Here are the correct labels for the anterior view of the scapula:
- Top left box: Acromion
- Second box down (left): Corocoid process
- Third box down (left): Glenoid cavity
- Fourth box down (left): Subscapular fossa
- Bottom box: Inferior angle
- Top middle box: Superior border
- Top right box: Superior angle
The image provided is an anterior view of the scapula, commonly known as the shoulder blade. This flat, triangular bone is a key component of the pectoral girdle, connecting the humerus (upper arm bone) to the clavicle (collarbone). Understanding its various bone markings is crucial for comprehending shoulder mechanics and muscle attachments.
The Acromion is a large, palpable bony projection that extends laterally and anteriorly from the spine of the scapula (which is on the posterior side). It forms the highest point of the shoulder and articulates with the clavicle at the acromioclavicular joint.
Just inferior and medial to the acromion is the Corocoid process, a hook-like structure that projects forward. It serves as a vital attachment site for several muscles and ligaments, including the pectoralis minor muscle and the coracoacromial ligament.
The Glenoid cavity, or glenoid fossa, is the shallow, pear-shaped socket located on the lateral angle of the scapula. It articulates with the head of the humerus to form the glenohumeral joint, which is the main shoulder joint, allowing for a wide range of motion.
The large, concave depression covering most of the anterior surface is the Subscapular fossa. This area provides a broad attachment point for the subscapularis muscle, a primary internal rotator of the shoulder and a member of the rotator cuff.
The scapula has three borders and three angles. The Superior border is the shortest and thinnest edge located at the top of the bone. The Superior angle is the uppermost corner, formed by the junction of the superior and medial borders. Finally, the Inferior angle is the most pointed, lowermost part of the scapula. It is an important clinical landmark for observing scapular movement and stability.
