retinaculum

/ret-n-ak-yuh-luhm/US // ˌrɛt nˈæk yə ləm //UK // (ˌrɛtɪˈnækjʊləm) //

网状结构,网膜,视网膜,网状物

Definitions

n.名词 noun

1
plural ret·i·nac·u·la [ret-n-ak-yuh-luh]. /ˌrɛt nˈæk yə lə/.
- : Anatomy, Zoology. any of various small structures that hook, clasp, or bind other structures to move them or hold them in place.
- : Entomology. a bristle on the butterfly forewing that clasps to the frenulum of the hindwing.

This process is termed the retinaculum, and serves, in conjunction with the frenulum, to lock the wings together during flight.
In many of the Lepidoptera both frenulum and retinaculum are entirely wanting.
The retinaculum is not correctly represented in this figure, it arises from the anterior side of the sub-costal nervure.
Most, however, have four, the leaf stomach or psalterium being intercalated between the retinaculum and the abomasum.