Please answer this for me

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Aboy with an extra x chromosome probably has which of the following syndromes?

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.