Search Results for: vertebrates
Kingdom Animalia
Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More
Invertebrate
Invertebrate Definition An invertebrate refers to any of the animals lacking a vertebral column. The term invertebrate came... Read More
Parthenogenesis
To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More
Reproductive system
What is the Reproductive System? The reproductive system of an organism is the biological system made up of all the... Read More
Osteichthyes
Definition noun A taxonomic superclass of a diverse group of fish that have skeletons composed primarily of bone... Read More
Cardiac muscle
Definition noun, plural: cardiac muscles (1) The heart muscle of the vertebrates (2) myocardium Supplement The muscles of... Read More
Chondrichthyes
Definition noun A taxonomic class comprised of cartilaginous fish Supplement Chondrichthyes is taxonomic superclass of... Read More
Respiratory system
Definition noun An organ system comprised of organs and structures associated for respiration or gas exchange Supplement An... Read More
Mammalian Ancestors
Humans are mammals, the most successful taxonomic class of organisms to colonize the Earth. The word mammal derives from the... Read More
Amphibians & Early Reptiles
Amphibia Definition (Science: zoology) Amphibia is one of the classes of vertebrates. The amphibia are distinguished by... Read More
Vertebral column
Definition noun, plural: vertebral columns The series of vertebrae that extend from the cranium to the coccyx, and serves as... Read More
Nonapeptide
Definition noun, plural: nonapeptides An oligopeptide comprised of nine amino acid residues Supplement Peptides are monomers... Read More
Metamerism
Metamerism Definition Metamerism is the repetition of homologous body segments. This type of development can be seen in the... Read More
Bone tissue
Definition noun, plural: bone tissues A mineralized connective tissue from which bones are made. Supplement The bone tissue... Read More
Parasitism
Organisms depend on different sources of food to survive. Larger organisms like plants make their own food (autotrophs) and... Read More
Pelvic girdle
pelvic girdle The bony ring formed by the hip bones and the sacrum, to which the lower limbs are attached. Synonym: cingulum... Read More
Lymphocyte
Definition noun, plural: lymphocytes The white blood cell of the blood derived from the stem cells of the lymphoid series of... Read More
Vasopressin
Definition noun, plural: vasopressins An antidiuretic peptide hormone produced by the magnocellular and the parvocellular... Read More
Pituitary gland
Definition noun, plural: pituitary glands An endocrine gland situated off the bottom of the hypothalamus, and acts as the... Read More
Biodiversity
Biodiversity Lead Author: J. Emmett DuffyThis article has been reviewed and approved by the following Topic Editor: John... Read More