Chiasm may refer to: * ''Chiasm'' (musical project), an electronic music project by Emileigh Rohn *

Chiasm (anatomy) In anatomy a chiasm is the spot where two structures cross, forming an X-shape (). This can be: * A ''tendinous chiasm'' is the spot where two tendons cross. For example, the tendon of the flexor digitorum superficialis muscle, and the tendon ...

, an X-shaped structure produced by the crossing over of the fibers, with the prefix chiasm- means cross examples include: ** A nerval chiasm, where either two nerves cross in the body midline (e.g.

Optic chiasma In neuroanatomy, the optic chiasm, or optic chiasma (; , ), is the part of the brain where the optic nerves cross. It is located at the bottom of the brain immediately inferior to the hypothalamus. The optic chiasm is found in all vertebrate ...

) ** A crossing of fibres inside a nerve reversing their mapping ** A tendinous chiasm, the spot where two tendons cross. The tendon of the

flexor digitorum longus muscle The flexor digitorum longus muscle is situated on the tibial side of the leg. At its origin it is thin and pointed, but it gradually increases in size as it descends. It serves to flex the second, third, fourth, and fifth toes. Structure The fle ...

forms two: the crural chiasm (with the tendon of the tibialis posterior muscle) and the plantar chiasm (with the tendon of the flexor hallucis longus muscle). *

Chiasma (genetics) In genetics, a chiasma (pl. chiasmata) is the point of contact, the physical link, between two (non-sister) chromatids belonging to homologous chromosomes. At a given chiasma, an exchange of genetic material can occur between both chromatids, what ...

, the point where two chromatids are intertwined (interwoven) in a cell * An instantiation of chiasmus

See also