Definition of Ommatidium. Meaning of Ommatidium. Synonyms of Ommatidium

Here you will find one or more explanations in English for the word Ommatidium. Also in the bottom left of the page several parts of wikipedia pages related to the word Ommatidium and, of course, Ommatidium synonyms and on the right images related to the word Ommatidium.

Definition of Ommatidium

Ommatidium
Ommatidium Om`ma*tid"i*um, n.; pl. Ommatidia. [NL., dim. of Gr. ?, ?, the eye.] (Zo["o]l.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates.

Meaning of Ommatidium from wikipedia

- ommatidium). An ommatidium contains a cluster of photoreceptor cells surrounded by support cells and pigment cells. The outer part of the ommatidium is...
- while light from other directions is absorbed by the dark wall of the ommatidium. The mantis shrimp is the most advanced example of an animal with this...
- development of R7 cells in the Drosophila embryonic eye. The drosophila ommatidium contains 8 distinct retinula or R cells, each of which has a different...
- apparatus Feature detection Infrared sensing in snakes Monocular deprivation Ommatidium Palpebral (bone) Pseudopupil Rhopalium Underwater vision Visual perception...
- retina distinguishes the vertebrate camera eye from the simple stemma or ommatidium. However, not all ocelli and ommatidia of invertebrates have simple photoreceptors;...
- united by cryptonephric Malpighian tubules of the normal type, a cone ommatidium with open rhabdom, and lack of functional spiracles on the eighth abdominal...
- ommatidia, columns that are usually hexagonal in cross section. Each ommatidium is an independent sensor, with its own light-sensitive cells and often...
- into the ordered hexagonal pattern seen in more derived arthropods. Each ommatidium feeds into a single nerve fiber. Furthermore, the nerves are large and...
- 800 unit ommatidia which are repeated in a symmetrical pattern. Each ommatidium contains 8 photoreceptor cells each of which forms a rhabdomere (7 and...
- consist of thousands of individual photoreceptor units or ommatidia (ommatidium, singular). The image perceived is a combination of inputs from the numerous...
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