
Vertebrate | Definition, Characteristics, Examples, Classification ...
Vertebrate, any animal of the subphylum Vertebrata. They have backbones and are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone.
Anatomy of a vertebrate | Britannica - Encyclopedia Britannica
vertebrate, Any animal of the chordate subphylum Vertebrata, which includes the fishes, amphibians, reptiles, birds, and mammals. Vertebrates have an internal skeleton formed of cartilage, bone, or both.
Vertebrate - Evolution, Paleontology, Anatomy | Britannica
Subphylum Vertebrata (or Craniata) Bilaterally symmetrical; internal skeletal support with skull enclosing a highly developed brain and a vertebral column and nerve cord; paired, jointed appendages; skin; advanced organ systems; sense organs concentrated in head.
vertebrate - Students | Britannica Kids | Homework Help
Vertebrates are members of the subphylum Vertebrata, which is part of the phylum Chordata. Encyclopædia Britannica, Inc. The presence of a hollow, jointed backbone is the main feature that distinguishes vertebrates from invertebrates (animals that lack a backbone).
Vertebrate - Nervous System, Sensory Organs | Britannica
National Center for Biotechnology Information - PubMed Central - The phylum Vertebrata: a case for zoological recognition; Palomar College - Classes of Vertebrates; PNAS - Vertebrate innovations; University of Central Florida Pressbooks - General Biology - …
Chordate | Definition, Characteristics, & Facts | Britannica
2025年3月25日 · chordate, any member of the phylum Chordata, which includes the vertebrates (subphylum Vertebrata), the most highly evolved animals, as well as two other subphyla—the tunicates (subphylum Tunicata) and cephalochordates (subphylum Cephalochordata).
Vertebrate digestive system | anatomy | Britannica
Other articles where vertebrate digestive system is discussed: bird: Muscles and organs: The avian digestive system shows adaptations for a high metabolic rate and flight. Enlargements of the esophagus, collectively called the crop, permit the temporary storage of food prior to digestion. The stomach is typically divided into a glandular proventriculus and a muscular gizzard, the …
Nervous system - Brain, Spinal Cord, Neurons | Britannica
2025年2月21日 · The nervous system of vertebrates has two main divisions: the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, which in humans includes 12 pairs of cranial nerves, 31 pairs of spinal nerves, and the autonomic, or involuntary, nervous system.. Anatomic structures such as the nervous system are described …
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