Dictionary > Lamellae

Lamellae

Definition
noun, singular: lamella
(general)
Thin structures resembling a plate.
(cell biology)
Intergrana thylakoids, i.e. stroma thylakoids that connect grana (stacks of thylakoid discs).
(botany)
(1) Plate-like layers of pectin that cement cell walls of adjacent plant cells, and involved in forming plasmodesmata between cells and rendering stability in plants
(2) Thin scales or plate-like structures growing from the petals in certain flowers.
(3) Thin sheets of cells standing up along the midrib of leaves in mosses.
(mycology)
Radiating leaflike spore-producing structures beneath the cap of a mushroom or similar fungus; gills of the mushroom.
(zoology)
(1) Bony concentric layers surrounding the haversian canals in bone.
(2) Thin layers or pages in a gill book involved in respiration, as in horseshoe crabs
(3) Structures involved in respiration, and are of two types: the primary and secondary gill lamellae that increase the amount of oxygen intake of the blood in fish.
(4) Miniature ridges inside the bills of water-feeding ducks (Anatidae) and water birds (e.g. Phoenicopteridae), and serve as filters during feeding.
(5) Flanges or teeth-forming barriers inside the aperture of a snail’s shell.
(6) Precursors of the prepuce during the development of urinary and reproductive organs in humans.
(medicine)
Small disks of gelatin mixed with a medicinal substance to treat conjuntiva.
Supplement
Word origin: Latin lāmella, small thin plate, diminutive of lāmina, thin plate.
Related forms: lamellar (adjective).

Related phrases: middle lamellae (botany).


You will also like...

Schematic diagram of DNA replication
DNA Structure & DNA Replication

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

Angle Oak Tree
Seed Plants

Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

The Human Physiology
The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

Oligodendrocyte and Schwann cell
The Central Nervous System

Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

Circulation
Circulation

The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

Still Water Animals
Still Water Animals

Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..