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What are two basic functional distinctions between ionotropic receptors and metabotropic receptors?
Dorsal Hollow Nerve Cord
A distinctive feature of chordates, this is a nerve cord found along the back or dorsal side of the organism.
Notochord
A flexible rod made out of a material similar to cartilage that provides support in the embryonic stages of all chordates, including humans.
Vertebral Column
Portion of the vertebrate endoskeleton that houses the spinal cord; consists of many vertebrae separated by intervertebral discs.
Dorsal Notochord
A flexible rod-shaped structure in the embryo of all chordates, including humans, that provides skeletal support and defines the primitive axis of the embryo.
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