Galea Aponeurotica
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
The Galea Aponeurotica is a strong, fibrous sheet of connective tissue covering the top of the skull, formed by the aponeurosis of the occipital and frontal muscles. It serves as an attachment point for these muscles and moves easily with the scalp when they contract.
Encyclopedia entry (1928–1936)
GALEA APONEUROTICA (from Greek galeae- weasel, marten). Among the Romans, galea referred to a leather helmet; this term was introduced into anatomy by Santorini (D. Santorini, 1681-1737). The term that has survived to the present day, 'galea aponeurotica cranii' (cranial aponeurotic helmet), belongs to the St. Petersburg anatomist Weitbrecht (1702-47) and is used to denote the thin, strong tendon (tendo intermedia) of the frontal and occipital muscles (m. epicranius), loosely fused with the periosteum of the skull (periorbita) and firmly attached to the skin (see Aponeurosis). The posterior part of G. a. is distinctly tendinous in structure. Anteriorly, it becomes thinner, and its fiber bundles pass into the subcutaneous connective tissue, with which G. a. is related in origin. When the aforementioned muscles contract, it easily moves along with the hairy part of the head.
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“Galea Aponeurotica.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/galea-aponeurotica/