8 Questions
Which of the following statements is true about shoulder muscles?
They can be categorized into proximal stabilizers and distal mobilizers.
Where do proximal stabilizers originate from?
The spine, ribs, and cranium
Which of the following is an example of a proximal stabilizer?
Trapezius
What is required for optimal function of the shoulder complex?
Coordinated interaction between proximal stabilizers and distal mobilizers
Where do distal mobilizers originate from?
The scapula and clavicle
Which of the following is an example of a distal mobilizer?
Biceps brachii
What can be found in Appendix II, Part F of the text?
Proximal and distal attachments and nerve supply of shoulder muscles
What can be found in Appendix II, Part G of the text?
Cross-sectional areas of selected shoulder muscles
Study Notes
- Shoulder muscles can be categorized into proximal stabilizers and distal mobilizers.
- Proximal stabilizers originate from the spine, ribs, and cranium and insert on the scapula and clavicle.
- Distal mobilizers originate from the scapula and clavicle and insert on the humerus or forearm.
- Optimal function of the shoulder complex requires coordinated interaction between proximal stabilizers and distal mobilizers.
- Understanding these interactions requires knowledge of bony attachments made and shared by each set of muscles.
- Appendix II, Part F lists proximal and distal attachments and nerve supply of shoulder muscles.
- Appendix II, Part G lists cross-sectional areas of selected shoulder muscles.
- Trapezius and serratus anterior are examples of proximal stabilizers.
- Deltoid and biceps brachii are examples of distal mobilizers.
- The shoulder complex is a complex system that requires careful coordination for optimal function.
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