12 Questions
What is the function of the clavicle in overhead abduction of the arm?
It acts as a lever for the action of the serratus anterior in overhead abduction of the arm.
What divides the dorsal surface of the scapula into a supraspinous fossa and an infraspinous fossa?
The spine of the scapula.
Where is the infraglenoid tubercle located on the scapula?
At the upper end of the lateral border.
What is the structure that extends from the superior angle to the inferior angle of the scapula?
The thin medial border.
Which muscle covers the superior angle of the scapula?
The trapezius muscle.
What is the direction of the glenoid cavity or fossa on the scapula?
Forwards, laterally, and slightly upwards.
What divides the dorsal surface of the scapula into the supraspinous and infraspinous fossae?
The spine or spinous process
What is the posterior border of the crest of the spine called?
The crest has upper and lower lips
What process has a facet for the clavicle and two borders, medial and lateral?
The acromion process
What muscle arises from the medial two-thirds of the subscapular fossa?
The multipennate subscapularis muscle
From where does the supraspinatus muscle arise?
The medial two-thirds of the supraspinous fossa including the upper surface of the spine
Which muscle arises from the lower border of the crest of the spine and from the lateral border of the acromion?
The deltoid muscle
Test your knowledge on the anatomy of a missing clavicle bone and its impact on the shoulder and arm movements. Learn about the features and surfaces of the scapula bone in relation to the absence of the clavicle.
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