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A tripartite structure is recorded from near the antennae, consisting of elevated walls arranged in a semicircle (likely to enlarge the surface for an excretory organ as in modern crustaceans), a pore representing an opening of the “antennal gland” (the purpose of which is unknown) and a sickle-shaped furrow surrounding this pore.
The coxal gland is thought to be homologous with the antennal gland of crustaceans. The gland consists of an end sac (saccule), a long duct (labyrinth) and a terminal bladder (reservoir). [2] There is generally only one pair (two in some spiders), and they open on the coxae of the walking legs [1] or at the base of the second antennae in the ...
In Crustacea, the saccate metanephridia are associated with the antennae and form the antennal gland. In freshwater crustacea, the saccate metanephridia are especially large due to their role in osmoregulation; crustacea must remove large amounts of water from the tissues, as the cells are hypertonic to the surrounding water.
Since there is not a universally accepted classification for neck pain, it is difficult to study the different neck pain types. While neck pain is the second most common cause of disability and cost $100 billion [2], the NIH budgets only $10 million to the study of neck pain [3]. One of the most common neck pains is between the neck and the ...
Cervicocranial syndrome is either congenital [1] or acquired. [2] Cervicocranial syndrome may be caused by Chiari disease, Klippel-Feil malformation, [3] osteoarthritis, and physical trauma. [4] Treatment options include neck braces, pain medication and surgery. The quality of life for individuals suffering from Cervicocranial syndrome can ...
The Mayo Clinic diet has two phases during which you can lose up to 10 pounds in two weeks. Here's what to know about it, including the Mayo Clinic Diet menu.
Antennae (sg.: antenna) (sometimes referred to as "feelers") are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments.
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