Radial sector
- Pronunciation
- /RAY-dee-al SEK-tor/
- Category
- Anatomy
- Singular
- Radial sector
- Plural
- Radial sectors
Definition
A distinct branch of the wing vein system in insects, specifically forming part of the radial vein, often terminating in an apical fork (radial fork) that may contact other veins such as the median (M) vein.
Etymology
From Latin 'radius', meaning 'spoke' or 'ray', and 'sector', meaning 'part'.
Example
The radial sector (Rs) in the forewing of a butterfly is crucial for wing shape and flight.
Related Terms
- Radius
- Radial fork
- Wing venation