clavipectoral triangle


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clavipectoral triangle

[TA]
area of anterior thoracic region bounded superiorly by the clavicle, inferomedially by the pectoral major (muscle) and superolaterally by the deltoid (muscle); the cephalic vein typically passes from superficial to deep here, and the pectoral branch of the thoracoacromial (arterial) trunk emerges here.
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The fascicles lying deep to the clavipectoral triangle emitted their terminal branches from the beginning of the upper margin of the axillary fossa.