axillary arch


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pec·to·ro·dor·salis mus·cle

an anomalous muscle or tendinous slip that passes across the axilla from the pectoralis major to insert with the latissimus dorsi onto the humerus. Thought to be a vestige of the panniculus carnosus muscle of lower mammals.

axillary arch

An anomalous muscular slip across the axilla, between the pectoralis major and latissimus dorsi muscles.
See also: arch
References in periodicals archive ?
Aziz's report of bilateral axillary arch muscle in a case of trisomy 13 and aneuploidy (trisomy 18), the variant AAM, was found along with other supernumerary muscles, a regular feature found in monkeys and great apes.
Langer's axillary arch: Anatomy, embryological features and surgical implications.
An anomalous axillary arch muscle (latissimocondyloideus muscle) from the upper part of the tendon of latissimus dorsi, 7.5cm before its insertion and ran below the pectoralis major, crossed over the axillary vessels and nerves of the brachial plexus to be inserted into the fascia covering the common tendon of short head of biceps brachii and coracobrachialis.
Many reports showed that a muscular axillary arch, flat muscle arising from lateral border of latissimus dorsi, may be seen in 7% of the population, but there is little information about the innervation of this part.