Briefly Explain the Cephalocaudal and Proximodistal Patterns of Development

question 210

Essay

Briefly explain the cephalocaudal and proximodistal patterns of development. Provide an example of how each are evidenced in a baby.

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Definitions:

Jaws

The bony structure in the head of most vertebrates that holds the teeth and is used for biting and chewing.

Chordate Nerve Cord

The Chordate Nerve Cord is a dorsal, hollow nerve cord found in all chordates, including humans, that develops into the spinal cord and brain.

Ventrally

Pertaining to the belly or underside of an animal or organism; the opposite of dorsally, which refers to the back or upper side.

Chordate Notochord

A flexible rod made out of a material similar to cartilage that provides support in all chordates at some stage of their development.