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It is composed of a fluid plasma in which hemolymph cells called hemocytes are suspended. In addition to hemocytes, the plasma also contains many chemicals. It is the major tissue type of the open circulatory system characteristic of arthropods (for example, arachnids, crustaceans and insects).
Hemocytes are phagocytes of invertebrates. Hemocytes in Drosophila melanogaster can be divided into two categories: embryonic and larval. Embryonic hemocytes are derived from head mesoderm and enter the hemolymph as circulating cells. Larval hemocytes, on the other hand, are responsible for tissue remodeling during development.
A general term for a structure by which an object hangs (from Greek language kremastos, meaning "hung up"); for example in entomology: in some Lepidoptera, including most butterflies, the pupa attaches to a surface by the cremaster, a structure at the tip of the pupal abdomen. The cremaster is the homologue of the anal plate of the caterpillar.
The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]
The word ousted adder, as adder went on to narrow in meaning, though in Old English næddre was the general word for snake. [12] The other term, serpent, is from French, ultimately from Indo-European *serp-'to creep', [13] which also gave Ancient Greek ἕρπω (hérpō) 'I crawl' and Sanskrit sarpá ‘snake’. [14]
The Cave Kukri Snake also has eight teeth in its jaw, and the back three teeth are “enlarged” and “blade-shaped,” the researchers said. The snakes have “blade-shaped” teeth in the back ...
The Western terrestrial garter snake species is common in most habitats but spends a lot of time in water. These snakes are typically gray-brown or black with a checkered pattern and yellow ...
The term invertebrates does not describe a taxon in the same way that Arthropoda, Vertebrata or Manidae do. Each of those terms describes a valid taxon, phylum, subphylum or family. "Invertebrata" is a term of convenience, not a taxon; it has very little circumscriptional significance except within the Chordata.