head gland


head gland
adhesive organ (transient larval organs near the mouth used to attach the larvae to the substrate, e.g. in Protopterus, Lepidosiren, Acipenser, Esox, Macropodus)

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • head gland — head gland, one of several glands of a bee which produce the chemicals that bees add to nectar to make honey …   Useful english dictionary

  • head gland — (PLATYHELMINTHES: Trematoda) Glands of circaria which produce a secretion emitted into the matrix of the tegument that is thought to function in the postpenetration adjustment of the schistosomula …   Dictionary of invertebrate zoology

  • adhesive head gland — adhesive organ …   Dictionary of ichthyology

  • Head and neck anatomy — focuses on the structures of the head and neck of the human body, including the brain, bones, muscles, blood vessels, nerves, glands, nose, mouth, teeth, tongue, and throat. It is an area frequently studied in depth by surgeons, dentists, dental… …   Wikipedia

  • Gland (engineering) — A gland is a general type of stuffing box, used to seal a rotating or reciprocating shaft against a fluid. The most common example is in the head of a tap (faucet) where the gland is usually packed with string which has been soaked in tallow or… …   Wikipedia

  • 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

  • Gland, salivary — One of the glands in the mouth that produce saliva. There are 3 major salivary glands. They are the parotid, submandibular, and sublingual glands. Each of these glands is paired; there is one parotid gland on each side of the head, etc. The… …   Medical dictionary

  • Head and neck cancer — ] Smokeless tobacco is an etiologic agent for oral and pharyngeal cancers. [cite journal |author=Winn D |title=Smokeless tobacco and aerodigestive tract cancers: recent research directions |journal=Adv Exp Med Biol |volume=320 |issue=… …   Wikipedia

  • Gland, pituitary — The main endocrine gland. It is a small structure in the head and is called the master gland because it produces hormones that control other glands and many body functions including growth. The pituitary consists of the anterior and posterior… …   Medical dictionary

  • Head and neck cancer — The common carcinomas of the oral cavity, pharynx, and larynx as well as other tumors that affect the head and neck. These include: {{}}Paranasal sinus and nasal cavity cancer Lip and oral cavity cancer Nasopharyngeal cancer Oropharyngeal cancer… …   Medical dictionary


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