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Characteristics of Chordates (Notochord (is a flexible rod-like structure…
Characteristics of Chordates
Dorsal Tubular Nerve Cord
Found at the dorsal region
Develops into the brain and spinal cord
Notochord
is a flexible rod-like structure that extends the length of the body
vertebrates eventually replace it by a more developed structure with bones and cartilage
it's a development in movement because its flexibility allows the body to bend rather than shorten during the contraction of the muscles
Rahaf Labban
Ancestral Thyroid Gland
a structure that regulates metabolism, growth, and development
less developed form called an endostyle which are present in invertebrates
Postanal Tail
Behind the anus
The muscle segments helps propel the animal
aids in locomotion
Pharyngeal Pouches
Muscular tubes that connect the mouth and esophagus
Aquatic Chordates
Used for filter feeding before developing into gills
Terrestrial Chordates
Develop into tonsils and thymus glands
Haya Altuwaijri