Neuroanatomy of the brachial plexus of the dog

Anatomical description of the origin and distribution of the brachial plexus to the antebrachium in one puma (Puma concolor) (Linnaeus, 1771)

“…The brachial plexus in the puma was formed by ventral interconnections from the last three cervical nerve segments and the first thoracic nerve, which is similar to that in domestic mammals as the dog (Skelding et al, 2018) and the cat (Aubert et al, 2004; Dellmann & McClure; 2001; Nur et al, 2020; Reighard & Jennings, 1902), and another wild felid as the ocelot ( Leopardus pardalis ) and the Geoffroy's cat ( Leopardus geoffroyi ) (Chagas et al, 2014; Souza Junior et al, 2018). Nevertheless, the second thoracic ventral branch also contributes to the brachial plexus in some dogs and cats (Bowne, 1959; Ghoshal & Magilton, 1972; Hudson, 2017; Mencalha et al, 2014). The animal species in which four ventral spinal segments contribute to the brachial plexus is related to the lack of the clavicle and its adaptive modifications of the shoulder muscles that reduces their movements (Allam et al, 1952).…”