The abdomen (colloquially called the belly, tummy, midriff, stomach, tucky or stocham) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates.The abdomen is the front part of the abdominal segment of the torso.The area occupied by the abdomen is called the abdominal cavity.In arthropods it is the posterior tagma of the body; it …

Marine invertebrates are the invertebrates that live in marine habitats.Invertebrate is a blanket term that includes all animals apart from the vertebrate members of the chordate phylum. Invertebrates lack a vertebral column, and some have evolved a shell or a hard exoskeleton.As on land and in the air, marine invertebrates have a large variety of body plans, and have been …

Traumatic insemination, also known as hypodermic insemination, is the mating practice in some species of invertebrates in which the male pierces the female's abdomen with his aedeagus and injects his sperm through the wound into her abdominal cavity (). The sperm diffuse through the female's hemolymph, reaching the ovaries and resulting in fertilization. ...

El abdomen [1] o vientre es una cavidad del cuerpo humano situada entre la abertura inferior del tórax (cerrado y separado de éste por el diafragma) y la abertura superior de la pelvis verdadera (menor) y las extremidades inferiores.En los mamíferos está separada de la caja torácica por el diafragma. [2] Muchas de las vísceras que contiene la cavidad abdominal pertenecen al …

Pleopods. Telson. The decapod crustacean, such as a crab, lobster, shrimp or prawn, is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon ( abdomen ). Each segment may possess one pair of appendages, although in various groups these may be reduced or missing.

a hard outer skin (known as an exoskeleton) with flexible legs. bilateral symmetry (meaning each side of the body is a mirror image of the other) The remaining invertebrates consist of worms, slugs and snails. Unlike arthropods these animals lack …

Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from 1 to 340 millimetres and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 …

Invertebrate body structure. A group of terms all related to the various parts of an invertebrate's body. Terms in this group. Abdomen one of the three main body parts of an insect and one of the two main body parts of spiders. Acrostichal Bristles bristles found on the top of the thorax of some flies. Aedeagus the reproductive organ of male insects.