Revista do Hospital das Clínicas
Print version ISSN 0041-8781
FROES, Luis Bernardo et al. Radiographic aspects and angioarchitectural arrangements in corrosion casts of the blood supply to the human sternocleidomastoid muscle by the sternocleidomastoid branch of the occipital artery. Rev. Hosp. Clin. [online]. 1999, vol.54, n.4, pp. 127-130. ISSN 0041-8781. http://dx.doi.org/10.1590/S0041-87811999000400005.
The contribution of the sternocleidomastoid branch of the occipital artery (superior arterial pedicle - SAP) to the irrigation of the sternocleidomastoid muscle (SCM) was evaluated in fresh human cadavers by injecting radiological dye and a resin for microvasculature corrosion casts. From its insertion in the mastoid process of the temporal bone, the SCM was divided into superior, medium, and inferior thirds. In most of the SCM, The SAP are formed by two longitudinal parallel branches. In all specimens, the radiological dye injected into the SAP reached or trespassed the middle part of the studied SCM. The SAP was poorly distributed in the lowermost region of the inferior third of the SCM, suggesting the contribution of other arteries or pedicles. The corrosion casts of the microvasculature showed a profuse network of microscopic vessels in those levels where the SAP was detected.
Keywords : Sternocleidomastoid muscle; Occipital artery; Microvascularization; Scanning Electron Microscopy; "Departamento de Anatomia, Instituto de Ciências Biomédicas da Universidade de São Paulo".