Operculum

Operculum (Latin for " cover " ) refers to a mostly lid-like or enveloping structure in anatomical connection. These include:

• The housing cover some snails - see operculum,
• The fleshy or bony gill cover of fishes,
• And other lid-like structures in a wide variety of organisms - for example, see ascus, stick insects, Serpulidae or pitcher plants,
• The portion of the cerebral hemisphere that covers the island cortex - see operculum (brain),
• An outgrowth of the second pharyngeal arch of the embryos of mammals - see the cervical sinus,
• The capsule including the in bud eucalyptus,
• Membranous covering an opening in the outer wall of pollen grains.

• Disambiguation