Aberrant arrangement of the musculocutaneous and median nerves in the thoracic limbs of a mixed-breed dog cadaver.

Tytuł:: Aberrant arrangement of the musculocutaneous and median nerves in the thoracic limbs of a mixed-breed dog cadaver.
Autorzy:: Kamali Y; Department of Basic Sciences, Anatomy and Embryology Division, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
Źródło:: Anatomia, histologia, embryologia [Anat Histol Embryol] 2022 May; Vol. 51 (3), pp. 419-423. Date of Electronic Publication: 2022 Feb 14.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Publication: Berlin : Wiley-Blackwell
Original Publication: Berlin, Parey.
MeSH Terms:: Brachial Plexus*/anatomy & histology
Dog Diseases*
Animals ; Cadaver ; Dogs ; Forelimb ; Male ; Median Nerve/anatomy & histology ; Musculocutaneous Nerve/anatomy & histology
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Contributed Indexing:: Keywords: anatomical variation; dog; median nerve; musculocutaneous nerve
Entry Date(s):: Date Created: 20220215 Date Completed: 20220517 Latest Revision: 20220517
Update Code:: 20240105
DOI:: 10.1111/ahe.12792
PMID:: 35165933
: Czasopismo naukowe

Pełny tekst

In the left thoracic limb of a male cadaver (adult mixed-breed dog), the median nerve (MN) after departing from the common median/ulnar nerve (UN) trunk received two branches. One from the lateral thoracic nerve (LTN) and the other from the musculocutaneous nerve (MCN). These both passed cranial to the axillary artery at the level of the lateral thoracic artery and joined the median nerve. Thus, in the proximal brachium, the axillary artery was cradled by this union, similar to the ansa axillaris of large animals and similar formations reported in human and non-human primates. In the distal brachium, the communicating branch ran unusually from the MN to the MCN on the left, and in both directions on the right. Awareness of such anatomical variations of the terminal branches of the brachial plexus (BP) in addition to the embryonic and evolutionary aspects can be useful in explaining neuroarterial signs with unknown origin, as those reported in human medicine.
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