All Topics  
Seta

 

 
   Email Print
   Bookmark   Link
 

 

Seta
 
 
  Topics Seta Topic Home

Seta (plural: setae) is a biological
Biology

Biology is a branch of the natural sciences concerned with the study of living organisms and their interaction with each other and their environment ....
 term derived from the Latin
Latin

Latin is an Italic language, historically spoken in Latium and Ancient Rome. Through the Military history of the Roman Empire, Latin spread throughout the Mediterranean and a large part of Europe....
 word for "bristle
Bristle

A bristle is a stiff hair or feather. Also used are synthetic materials such as nylon in items such as brooms and sweepers. Bristles are often used to make brushes for cleaning uses, as they are strongly abrasive; common examples include the toothbrush and toilet brush....
". It refers to a number of different bristle- or hair-like structures on living organism
Organism

In biology, an organism is any life thing . In at least some form, all organisms are capable of response to stimulus , reproduction, growth and developmental biology, and maintenance of homeostasis as a stable whole....
s.
a class="link1" onMouseover='showByLink("m1460819",this)' onMouseout='hide("m1460819")'href="http://www.absoluteastronomy.com/topics/Zoology">zoology
Zoology

Zoology is the branch of biology concerned with the study of animals. The most common pronunciation of "zoology" is ; however, an alternative pronunciation is ....
, most "setae" occur in invertebrates.

a class="link1" onMouseover='showByLink("m1460832",this)' onMouseout='hide("m1460832")'href="http://www.absoluteastronomy.com/topics/Botany">botany
Botany

Botany, plant science, phytology, or plant biology is a branch of biology and is the Scientific method of plant life and development....
, "seta" refers to the stalk supporting the capsule
Sporangium

A sporangium is a plant or fungus structure producing and containing spores. Sporangia occur in Flowering plant, gymnosperms, ferns, fern allies, bryophytes, Algaee, and Fungus....
 of a moss
Moss

Mosses are small, soft plants that are typically 1?10 cm tall, though some species are much larger. They commonly grow close together in clumps or mats in damp or shady locations....
, hornwort
Hornwort

Hornworts are a group of bryophytes, or non-vascular plants, comprising the division Anthocerotophyta. The common name refers to the elongated horn-like structure, which is the sporophyte....
 or liverwort
Liverwort

Liverwort may refer to either* Marchantiophyta, a division of non-vascular plants.* Hepatica, a genus of spring flowers....
, and supplying it with nutrients.






Discussion
Ask a question about 'Seta'
Start a new discussion about 'Seta'
Answer questions from other users
Full Discussion Forum



Encyclopedia


Seta (plural: setae) is a biological
Biology

Biology is a branch of the natural sciences concerned with the study of living organisms and their interaction with each other and their environment ....
 term derived from the Latin
Latin

Latin is an Italic language, historically spoken in Latium and Ancient Rome. Through the Military history of the Roman Empire, Latin spread throughout the Mediterranean and a large part of Europe....
 word for "bristle
Bristle

A bristle is a stiff hair or feather. Also used are synthetic materials such as nylon in items such as brooms and sweepers. Bristles are often used to make brushes for cleaning uses, as they are strongly abrasive; common examples include the toothbrush and toilet brush....
". It refers to a number of different bristle- or hair-like structures on living organism
Organism

In biology, an organism is any life thing . In at least some form, all organisms are capable of response to stimulus , reproduction, growth and developmental biology, and maintenance of homeostasis as a stable whole....
s.

Animal setae

Setae
In zoology
Zoology

Zoology is the branch of biology concerned with the study of animals. The most common pronunciation of "zoology" is ; however, an alternative pronunciation is ....
, most "setae" occur in invertebrates.
  • Setae in annelid
    Annelid

    The annelids, collectively called Annelida , are a large Scientific classification of animals comprising the segmented worms, with about 15,000 modern species including the well-known earthworms and leeches....
    s are stiff bristles present on the body. They help for example earthworm
    Earthworm

    Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. The earthworm is the most known worm in America, and other countries....
    s to attach to the surface and prevent backsliding during peristaltic motion. These hairs are what make it difficult to pull a worm straight from the ground. Setae in oligochaetes (a group including earthworms) are largely composed of chitin
    Chitin

    Chitin n is a long-chain polymer of a N-acetylglucosamine, a derivative of glucose, and is found in many places throughout the natural world....
    .
  • Setae on the legs of krill
    Krill

    Krill are a type of shrimp-like marine invertebrate animal. These small crustaceans are important organisms of the zooplankton, particularly as food for baleen whales, manta rays, whale sharks, crabeater seals, and other pinniped, and a few seabird species that feed almost exclusively on them....
     and other small crustacean
    Crustacean

    Crustaceans are a large group of arthropods, comprising almost 52,000 described species , and are usually treated as a subphylum . They include various familiar animals, such as crabs, lobsters, crayfish, shrimp, krill and barnacles....
    s help them to gather phytoplankton
    Phytoplankton

    Phytoplankton are the autotrophic component of the plankton community. The name comes from the Greek language words phyton, or "plant", and p?a??t?? , meaning "wanderer" or "drifter"....
    .
  • Setae in entomology
    Entomology

    Entomology is the science study of insects. At some 1.3 million described species, insects account for more than two-thirds of all known organisms,date back some 400 million years, and have many kinds of interactions with humans and other forms of life on earth....
     are often called hairs. They are unicellular and formed by the outgrowth of a single epidermal cell (trichogen). They are generally hollow and project through a secondary or accessory (tormogen) cell as it develops. The setal membrane is not cuticularized and movement is possible. Serve to protect the body.
  • Setae on gecko
    Gecko

    Geckos are small to average sized lizards belonging to the family Gekkonidae which are found in warm climates throughout the world. Geckos are unique among lizards in their vocalizations, making chirping sounds in social interactions with other geckos....
     footpads are small hair-like process
    Process (anatomy)

    In anatomy, a process is a projection or outgrowth of tissue from a larger body....
    es responsible for the animal's ability to cling to vertical surfaces.


Plant setae

In botany
Botany

Botany, plant science, phytology, or plant biology is a branch of biology and is the Scientific method of plant life and development....
, "seta" refers to the stalk supporting the capsule
Sporangium

A sporangium is a plant or fungus structure producing and containing spores. Sporangia occur in Flowering plant, gymnosperms, ferns, fern allies, bryophytes, Algaee, and Fungus....
 of a moss
Moss

Mosses are small, soft plants that are typically 1?10 cm tall, though some species are much larger. They commonly grow close together in clumps or mats in damp or shady locations....
, hornwort
Hornwort

Hornworts are a group of bryophytes, or non-vascular plants, comprising the division Anthocerotophyta. The common name refers to the elongated horn-like structure, which is the sporophyte....
 or liverwort
Liverwort

Liverwort may refer to either* Marchantiophyta, a division of non-vascular plants.* Hepatica, a genus of spring flowers....
, and supplying it with nutrients. The seta has a short foot embedded in the gametophyte
Gametophyte

In plants and algae that undergo alternation of generations, a gametophyte is the multicellular structure, or phase, that is haploid, containing a single set of chromosomes:...
 from which it grows. Setae are not present in all mosses, but in some species
Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring....
 they may reach 15 to 20 centimeters in height.

Artificial setae

The development of adhesives that detach at will yet display substantial stickiness is of great importance for various technological fields.

See also

  • Chaeta
    Chaeta

    A chaeta or cheta is a chitinous bristle or seta found on annelid worms such as the earthworm, although the term is also frequently used to describe similar structures in other invertebrates....
  • Synthetic setae
    Synthetic setae

    Synthetic setae emulate the setae found on the toes of a gecko and scientific research in this area is driven towards the development of dry adhesives....
  • Van der Waals force
    Van der Waals force

    In physical chemistry, the van der Waals force , named after The Netherlands scientist Johannes Diderik van der Waals, is the attractive or repulsive force between molecules other than those due to covalent bonds or to the electrostatic interaction of ions with one another or with neutral molecules....