A midline structure, i.e. a cartilaginous skeletal rod that is present in all the members of the chordates at any stage of their life cycle is known as notochord.
Notochord supports the body and plays a vital role in the development of vertebrates.
Notochord develops in the embryo as a small flexible rod made up of mesoderm cells of the embryo.
Notochord runs from head to tail along with the digestive system and the nerve cord.
Notochord provides skeletal support to the body of the organism.
Examples of organisms having notochord: Human beings, dogs, cows, etc.