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Pia mater (/ ˈpaɪ.ə ˈmeɪtər / or / ˈpiːə ˈmɑːtər /), [1] often referred to as simply the pia, is the delicate innermost layer of the meninges, the membranes surrounding the brain and spinal cord. Pia mater is medieval Latin meaning "tender mother". [1] The other two meningeal membranes are the dura mater and the arachnoid mater.
Posterior descending artery. Base and diaphragmatic surface of heart. (Posterior descending artery not visible, but it runs near the middle cardiac vein, which is labeled at the bottom.) In the coronary circulation, the posterior descending artery (PDA), also called the posterior interventricular artery (PIV, PIA, or PIVA), is an artery running ...
Denticulate ligaments (also known as dentate ligaments) are lateral projections of the spinal pia mater [1] forming triangular-shaped ligaments that anchor the spinal cord along its length to the dura mater on each side. [2] There are usually 21 denticulate ligaments on each side, with the uppermost pair occurring just below the foramen magnum ...
Near its origin, it gives off the interosseous recurrent artery. [1] This ascends to the interval between the lateral epicondyle and olecranon, on or through the fibers of supinator muscle, but beneath the anconeus muscle, and anastomoses with the middle collateral branch of the deep artery of arm, the posterior ulnar recurrent artery and the inferior ulnar collateral artery.
The conus medullaris (Latin for "medullary cone") or conus terminalis is the tapered, lower end of the spinal cord. It occurs near lumbar vertebral levels 1 (L1) and 2 (L2), occasionally lower. [1][2] The upper end of the conus medullaris is usually not well defined, however, its corresponding spinal cord segments are usually S1–S5.
Posterior communicating artery. Schematic representation of the arterial circle and arteries of the brain (inferior view). Blood flows up to the brain through the vertebral arteries and the internal carotid arteries. The brain and the arteries of the base of the brain, viewed from below, with the front of the brain at the top of the image.
Anatomical terminology. [ edit on Wikidata] The subarachnoid cisterns are spaces formed by openings in the subarachnoid space, an anatomic space in the meninges of the brain. [ 1 ] The space is situated between the two meninges, the arachnoid mater and the pia mater. These cisterns are filled with cerebrospinal fluid (CSF).
Anatomical terms of neuroanatomy. [edit on Wikidata] The arachnoid mater (or simply arachnoid) is one of the three meninges, the protective membranes that cover the brain and spinal cord. It is so named because of its resemblance to a spider web. The arachnoid mater is a derivative of the neural crest mesoectoderm in the embryo.
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