Ganglion

In anatomy, a ganglion (/ˈɡæŋɡliən/ GANG-glee-ən; plural ganglia) is a nerve cell cluster or a group of nerve cell bodies located in the autonomic nervous system. Ganglia house the cell bodies of afferent nerves.

Neurology

In a neurological context, ganglia are composed mainly of somata and dendritic structures which are bundled or connected. Ganglia often interconnect with other ganglia to form a complex system of ganglia known as a plexus. Ganglia provide relay points and intermediary connections between different neurological structures in the body, such as the peripheral and central nervous systems.

Among vertebrates there are three major groups of ganglia:

In the autonomic nervous system, fibers from the central nervous system to the ganglia are known as preganglionic fibers, while those from the ganglia to the effector organ are called postganglionic fibers.

Ganglion (disambiguation)

Ganglion is a biological tissue mass, most commonly a mass of nerve cell bodies.

Ganglion may also refer to:

See also

Ganglion cyst

A ganglion cyst, or a synovial cyst, also known as Gideon's Disease, a Bible Cyst, or a Bible Bump, is a non-neoplastic soft tissue lump that may occur in any joint, but most often occurs on, around, or near joints and tendons in the hands or feet. These cysts are caused by leakage of fluid from the joint into the surrounding tissue.

Signs and symptoms

The average size of these cysts is 2.0 cm, but excised cysts of more than 5 cm have been reported. The size of the cyst may vary over time, and may increase after activity.

Sites

These cysts most frequently occur around the dorsum of the wrist and on the fingers. A common site of occurrence is along the extensor carpi radialis brevis as it passes over the dorsum of the wrist joint. Although most commonly found in the wrist, ganglion cysts also may occur in the foot.

Ganglion cysts are "commonly observed in association with the joints and tendons of the appendicular skeleton, with 88% 'in communication with the multiple small joints of the hand and wrist' and 11% with those of the foot and ankle." Most often, they are found near the wrist joint, especially at the scapho-lunate area, which accounts for 80% of all ganglion cysts.

Removal

Removal may refer to:

Removal may also indirectly refer to:

See also

Hand

A hand (Latin manus) is a prehensile, multi-fingered organ located at the end of the forearm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs. A few other vertebrates such as the koala (which has two opposable thumbs on each "hand" and fingerprints remarkably similar to human fingerprints) are often described as having "hands" instead of paws on their front limbs. The raccoon is usually described as having "hands" though opposable thumbs are lacking.

Fingers contain some of the densest areas of nerve endings on the body, are the richest source of tactile feedback, and have the greatest positioning capability of the body; thus the sense of touch is intimately associated with hands. Like other paired organs (eyes, feet, legs) each hand is dominantly controlled by the opposing brain hemisphere, so that handedness—the preferred hand choice for single-handed activities such as writing with a pencil, reflects individual brain functioning.

Some evolutionary anatomists use the term hand to refer to the appendage of digits on the forelimb more generally — for example, in the context of whether the three digits of the bird hand involved the same homologous loss of two digits as in the dinosaur hand.

Calligraphy

Calligraphy is a visual art related to writing. It is the design and execution of lettering with a broad tip instrument, dip pen, or brush, among other writing instruments. A contemporary calligraphic practice can be defined as, "the art of giving form to signs in an expressive, harmonious, and skillful manner".

Modern calligraphy ranges from functional inscriptions and designs to fine-art pieces where the letters may or may not be readable. Classical calligraphy differs from typography and non-classical hand-lettering, though a calligrapher may practice both.

Calligraphy continues to flourish in the forms of wedding and event invitations, font design and typography, original hand-lettered logo design, religious art, announcements, graphic design and commissioned calligraphic art, cut stone inscriptions, and memorial documents. It is also used for props and moving images for film and television, testimonials, birth and death certificates, maps, and other written works.

Tools

The principal tools for a calligrapher are the pen and the brush. Calligraphy pens write with nibs that may be flat, round, or pointed. For some decorative purposes, multi-nibbed pens—steel brushes—can be used. However, works have also been created with felt-tip and ballpoint pens, although these works do not employ angled lines.

System of a Down (album)

System of a Down is the debut album by Armenian American rock band System of a Down, released in 1998. The album was certified gold by the RIAA on February 2, 2000. Two years later, after the success of Toxicity, it was certified platinum.

Overview

The cover artwork is from an anti-fascist, World War II-era poster designed by the artist John Heartfield for the Communist Party of Germany, which was contemporary with and directly against the Third Reich. The text on the original poster is: "5 fingers has a hand! With these 5 grab the enemy!" This slogan inspired part of the text contained on the back of the System of a Down album: "The hand has five fingers, capable and powerful, with the ability to destroy as well as create". Later, it is written in bold letters: "Open your eyes, open your mouths, close your hands and make a fist" (used later by Serj Tankian in the song "Uneducated Democracy").

Reception

Q magazine (10/01, p. 152) - 4 stars out of 5 - "This remains an excellent starting point for this most curious band".