nasal gland

nasal gland

      in marine birds and reptiles that drink saltwater, gland that extracts the salt and removes it from the animal's body. Its function was unknown until 1957, when K. Schmidt-Nielsen and coworkers solved the long-standing problem of how oceanic birds can live without fresh water. They found that a gland, located above each eye, removes sodium chloride from the blood far more efficiently than does the avian kidney and excretes it as brine through a duct into the nasal cavity. It is discharged from the nostrils (sometimes the mouth) in headshaking movements characteristic of cormorants, penguins, and other marine species. In marine reptiles a similar gland is located between eye and nostril.

* * *


Universalium. 2010.

Нужна курсовая?

Look at other dictionaries:

  • Nasal gland Search —    Gland in deer located just inside the nostrils, primarily used for lubrication …   Hunting glossary

  • gland — An organized aggregation of cells functioning as a secretory or excretory organ. SYN: glandula (1) [TA]. [L. glans, acorn] accessory g. a small mass of glandular structure, detached from but lying near another and larger g., to which it is… …   Medical dictionary

  • Nasal reconstruction using a paramedian forehead flap — Warning: this page contains pictures of surgery that can be shocking Nasal reconstruction using a paramedian forehead flap is a surgical technique to reconstruct different kinds of nasal defects [1]. In this operation a reconstructive surgeon… …   Wikipedia

  • Supraorbital gland — The supraorbital gland is a type of lateral nasal gland found in some species of marine birds, particularly penguins, which removes sodium chloride from the bloodstream. The gland s function is similar to that of the kidneys, though it is much… …   Wikipedia

  • Middle nasal concha — Bone: Middle nasal concha Ethmoid bone from behind …   Wikipedia

  • Middle nasal meatus — Bone: Middle meatus Roof, floor, and lateral wall of left nasal cavity. (Middle meatus labeled at center right.) Latin meatus nasi medius Gray s …   Wikipedia

  • Pituitary gland — Pituitary Pi*tu i*ta*ry, a. [L. pituita phlegm, pituite: cf. F. pituitarie.] (Anat.) (a) Secreting mucus or phlegm; as, the pituitary membrane, or the mucous membrane which lines the nasal cavities. (b) Of or pertaining to the pituitary body; as …   The Collaborative International Dictionary of English

  • salt gland — a gland, located in the head of seabirds and various marine mammals and reptiles, that secretes into the nasal passages the excess salt imbibed or ingested. [1945 50] * * * salt gland, a gland found in various animals, especially aquatic birds,… …   Useful english dictionary

  • tear duct and gland — or lachrymal duct and gland Structures that produce, distribute, and carry away tears. An almond shaped gland above the outer corner of each eye secretes tears between the upper eyelid and the eyeball. Tears moisten and lubricate the conjunctiva… …   Universalium

  • intermaxillary gland — a gland lodged in a fossa formed mainly of dermal bones, situated wholly in front of the nasal capsules of Osteolepiformes …   Dictionary of ichthyology

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”