Which artery does the anatomical guide just behind the medial border of the coracobrachialis muscle refer to?

The anatomical guide referring to the artery just behind the medial border of the coracobrachialis muscle indicates the axillary artery. This artery is significant because it supplies blood to the upper limb, transitioning from the subclavian artery as it passes under the clavicle and continuing into the brachial artery.

The coracobrachialis muscle is located in the upper arm, and its medial border serves as an anatomical landmark for locating the axillary artery. Since the axillary artery runs closely alongside structures in the shoulder region, including the coracobrachialis, it is important for practitioners, especially in a clinical or anatomical context, to identify this artery accurately for procedures or assessments involving upper limb vascularization.

Understanding the relationship between the coracobrachialis muscle and the axillary artery allows for better navigational skills in dissection and surgical procedures, where knowledge of arterial pathways is crucial for avoiding complications and ensuring patient safety.