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...

Biological Energy
Biological Energy – ADP & ATP

ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

Pikas are an indicator species for climate change
Indicator Species and Endangered Species

Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

Ecosystem Succession
Ecosystem Succession

If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

Gibberellins and Gibberellic Acid
Gibberellins and Gibberellic Acid

This tutorial describes the role of gibberellin family in plants. Find out the effects of gibberellin on plant growth an..

Lights' Effect on Growth
Lights’ Effect on Growth

This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..