Libelle of note

The semilunar leaflets of the aortic valve are separated by commissures: sinistrodextra, posterosinistra and posterodextra (Kachlik et al. 2021 Bosn J Basic Med Sci 21:208-220).

Several Sinus durae matris have been added: 1) Sinus tentorii (Tentorial sinus; see Matsushima M, Suzuki SO, Fukui M, et al. 1989 Microsurgical anatomy of the tentorial sinuses. J Neurosurg 71:923-928); 2) A variable Sinus occipitalis obliquus (Oblique occipital sinus; see Tubbs RS, Bosmia An, Shoja MM, et al. 2011 The oblique occipital sinus: A review of anatomy and imaging characteristics. Surg Radiol Anat 33:747-749); 3) A variable Plexus venosus falcis (Venous plexus of falx; see Tubbs RS, Loukas M, Shoja MM, et al. 2007 Anatomy of the falcine venous plexus. J Neurosurg 107:155-157); 4) A variabe Sinus intercavernosus inferior (Inferior intercavernous sinus; see Tubbs RS, Griessenauer C, Loukas M, Cohen-Gadol A 2014 Circular sinus: An anatomical study with neurosurgical and neurointerventional applications. World Neurosurg 82:475-478).

The enteric aganglionic plexuses are networks of nerve fibres consisting of axons and enteric glia but without regular nerve cell bodies. They exist in the mucosa (Plexus aganglionaris mucosus), in the muscularis mucosae (Plexus aganglionaris muscularis mucosae), in the two layers of the muscular coat (circular and longitudinal muscle plexus: Plexus aganglionaris internus muscularis and Plexus aganglionaris externus muscularis) and underneath the serosa (serosal plexus; Plexus aganglionaris serosus). The extreme aganglionic plexus (Plexus aganglionaris extremus) is situated directly at the innermost border of the circular muscle, between the ganglionic external submucosal plexus and the inner border of the circular muscle. Some authors add this plexus to the circular muscle plexus (Brehmer A, Rupprecht H, Neuhuber W 2010 Two submucosal nerve plexus in human intestines. Histochem Cell Biol 133:149-161).

New term; the Venulae aquosae ('Wasservenen') were described by Ascher KW (1942) Am J Ophthalmol 25:31. They collect the Humor aquosus from the Sinus venosus sclerae, and drain into the Venae episclerales.

See note # 8762

The Dentes subiculi (Gyri of Andreas Retzius) were described by Retzius (1896) for the Caudal part of CA1 at the Hippocampal tail; the term Gyri subspleniales (Subsplenial gyri) indicate their position. Deep to the Gyri andreae retzii, two obliquely oriented small gyri are found (Duvernoy 1998; Insausti and Amaral 2012): 1) a medial gyrus: the Fasciola cinerea, which forms the visible part of the Dentate gyrus as descibed by Giacomini (1884) and Klingler (1948); and 2) a lateral gyrus: Gyrus fasciolaris (Fasciolar gyrus), corresponding to the caudal end of the CA3 field.

The Arcus labiorum inferior is an arterial anastomosis between both superior labial arteries, located in the musculus orbicularis oris of the lower lip (Kachlik et al. 2021 Bosn J Basic Med Sci 21:208-220).

The Arcus labiorum superior is an arterial anastomosis between both superior labial arteries, located in the musculus orbicularis oris of the upper lip (Kachlik et al. 2021 Bosn J Basic Med Sci 21:208-220).