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The heart is a muscular organ found in humans and other animals.This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2]
Ombilinichthys yamini is the oldest known gourami. The family Osphronemidae is divided into the following subfamilies and genera: [3] [4] family Osphronemidae van der Hoeven, 1832
Elements of the human body by mass. Trace elements are less than 1% combined (and each less than 0.1%).; Element: Symbol: Percent mass: Percent atoms: Oxygen O 65.0 24.0 Carbon C 18.5
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim.Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only by muscles.
The dugong (/ ˈ d (j) uː ɡ ɒ ŋ /; Dugong dugon) is a marine mammal.It is one of four living species of the order Sirenia, which also includes three species of manatees.It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century.
The mediastinum (from Medieval Latin: mediastinus, lit. 'midway'; [2] pl.: mediastina) is the central compartment of the thoracic cavity.Surrounded by loose connective tissue, it is a region that contains vital organs and structures within the thorax, namely the heart and its vessels, the esophagus, the trachea, the vagus, phrenic and cardiac nerves, the thoracic duct, the thymus and the lymph ...
Lionfish have 18 venomous spines total: 2 pelvic spines, 3 anal spines, and 13 dorsal spines. Pterois is a genus of venomous marine fish, commonly known as lionfish, native to the Indo-Pacific.
Spotted jellies swimming in a Tokyo aquarium. Jellyfish, also known as sea jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria.