Which of the following is a characteristic of the pectoral girdle that allows for enhanced upper limb mobility?
Understand the Problem
The question is asking about the characteristics of the pectoral girdle that contribute to greater mobility of the upper limb. We need to identify the feature among the options that best explains this enhanced mobility, considering the structure and function of the shoulder joint.
Answer
Enhanced upper limb mobility is due to the clavicle's mobile joint and the scapula's muscular connection, allowing flexibility.
The pectoral girdle enhances upper limb mobility due to the clavicle's highly mobile joint with the axial skeleton (the sternoclavicular joint) and the scapula's muscular connection to the rib cage, offering great mobility.
Answer for screen readers
The pectoral girdle enhances upper limb mobility due to the clavicle's highly mobile joint with the axial skeleton (the sternoclavicular joint) and the scapula's muscular connection to the rib cage, offering great mobility.
More Information
The shoulder girdle (pectoral girdle) is a structure that allows for a wide range of upper limb movements, making the shoulder the most flexible joint in the body.
Sources
- The Pectoral Girdle | Anatomy and Physiology I - Lumen Learning - courses.lumenlearning.com
- The Pectoral Girdle: Study with Video Lessons, Practice ... - Pearson - pearson.com
- Shoulder girdle - Wikipedia - en.wikipedia.org
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