The four primary nerve plexi are the cervical plexus, brachial plexus, lumbar plexus, and the sacral plexus.
The choroid plexus is a part of central nervous system in the brain and it consist of capillaries, ventricles and ependymal cells.
The plexus is the characteristic form of nervous system in the coelenterates and persists with modifications in the flatworms. The nerves of the radially symmetric echinoderms also take this form, where a plexus underlies the ectoderm of these animals and deeper in the body other nerve cells form plexi of limited extent.
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The Rosy Crucifixion, a trilogy consisting of Sexus, Plexus, and Nexus, is a fictionalized account documenting the six-year period of Henry Miller's life in Brooklyn as he falls for his second wife June and struggles to become a writer, leading up to his initial departure for Paris in 1928.
Sexus (1949), the first volume, describes the break-up of Miller’s first marriage to Maude as he meets, falls in love with and marries his second wife, the captivating and mysterious dancer Mona (June). All the while, he feels guilty for leaving Maude, and becomes more attracted to her following their divorce. At the beginning of Sexus, Miller is 33 years old. June is at first called Mara, but at the beginning of chapter 8, and for the remainder of the trilogy, her name is changed to Mona. Miller states that this is under the influence of his friend Dr. Kronski, and that the name change accompanied "other, more significant changes." She is one who has changed many details of her life: "her name, her birthplace, her mother, her upbringing, her friends, her tastes, even her desires."
Plexus may refer to: