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What Is a Vertebrate (Characteristics of Chordates (Nerve Cord in Back…
What Is a Vertebrate
Characteristics of Chordates
Nerve Cord in Back
also has a nerve chord that runs down their back which is the
connection between the brain and the nerves
Slits in Throat Area
called pharyngeal, slits, or gill slits
Notochord
A flexible rod that supports a chordate's back
At some point in their lives, chordates will have a notochord, a nerve chord that runs down their back, and slits in their throat area
Characteristics of Vertebrates
Backbone
backbone is formed by many similar bones
Internal Skeleton
protects internal organs, helps give the body shape, and gives muscles a place to attach
A vertebrate has a backbone that is part of an internal skeleton
Keeping Conditions Stable
Ectotherms
doesn't produce much internal heat
Endotherms
regulates it's own body temperature by controlling the internal heat it produces
The body temperature of most fished, amphibians, and reptiles is close to the temperature of their environment. In contrast, bird and mammals have a stable body temperature that is often warmer than their environment
Strange looking creatures 530 million years ago
A jawless fish- one of the earliest vertebrates