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Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... List of marine vertebrates of the Cape Peninsula and False Bay; R.
The number of vertebrae in a region can vary but overall the number remains the same. In a human spinal column, there are normally 33 vertebrae. [3] The upper 24 pre-sacral vertebrae are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone.
In other animals, the vertebrae take the same regional names except for the coccygeal – in animals with tails, the separate vertebrae are usually called the caudal vertebrae. [19] Because of the different types of locomotion and support needed between the aquatic and other vertebrates, the vertebrae between them show the most variation ...
Idealised vertebrate body plan, showing key characteristics. Vertebrates (and other chordates) belong to the Bilateria, a group of animals with mirror symmetrical bodies. [6] They move, typically by swimming, using muscles along the back, supported by a strong but flexible skeletal structure, the spine or vertebral column. [7]
The general characteristics of the third through sixth cervical vertebrae are described here. The first, second, and seventh vertebrae are extraordinary, and are detailed later. The bodies of these four vertebrae are small, and broader from side to side than from front to back.
Print/export Download as PDF; Printable version; In other projects ... Pages in category "Vertebrates" The following 2 pages are in this category, out of 2 total.
Cyclostomes were regarded as either degenerate cartilaginous fishes or primitive vertebrates. Cope (1889) [11] coined the name Agnatha ("jawless") for a group that included the cyclostomes and a number of fossil groups in which jaws could not be observed. Vertebrates were subsequently divided into two major sister-groups: the Agnatha and the ...
The vertebrates share one body plan, while invertebrates have many. This term, usually applied to animals, envisages a "blueprint" encompassing aspects such as symmetry , layers , segmentation , nerve , limb , and gut disposition.
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