arthromere
Noun A segment or section of the body in a jointed invertebrate animal, especially an arthropod. Each arthromere is typically a ring-like unit that, together with others, makes up the articulated body and limbs.
The term "arthromere" is a specialized zoological term used to describe the segmented body plan characteristic of arthropods (e.g., insects, crustaceans, spiders). It refers to the individual, often repeated, structural units.
Examples * The centipede's long body is composed of numerous similar arthromeres. * In crustaceans, each arthromere may bear a pair of appendages. * The fossil shows the clear division of the trilobite's body into distinct arthromeres.
- The term is often used in comparative anatomy and evolutionary biology when discussing the segmentation (metamerism) of arthropods and related organisms.
- It can be used descriptively in paleontology when examining fossilized arthropods.
- Arthropod (n): The phylum of invertebrate animals with segmented bodies, jointed limbs, and exoskeletons (e.g., insects, spiders, crabs). An arthropod's body is built from arthromeres.
- Metamere (n): A more general term for a body segment in any segmented animal (e.g., in annelid worms), of which an arthromere is a specific type found in jointed animals.
- Somite (n): A segment of the body of a vertebrate embryo, or a segment in some invertebrates; related conceptually but not identical to an arthromere.
- Body segment
- Metamere (in a general zoological context)
"Arthromere" is a technical compound word from Greek roots (arthro- meaning "joint" and -mere meaning "part"). It specifically denotes a segment that is part of a jointed structure, distinguishing it from the more general "metamere." It is almost exclusively used in scientific contexts.
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any of the segments in the body of a jointed animal like an arthropod
