Elements composing the human body

O

oxygen, component of organic and inorganic molecules, aids ATP production

C

Carbon, component of all organic molecules

H

hydrogen, component of all organic molecules, influences pH

N

nitrogen, component of proteins and nucleic acids

Ca

calcium, salt in bones and teeth, used for muscle contracion nerve impulses and blood clotting.

P

phosphorus, goes with calcium, nucleic acids, ATP, phospholipids.

k

potassium, nerve impulses and muscle contraction

s

sulfur, component of muscle proteins

na

sodium, water balance, nerve impulses, muscle contraction

cl

chlorine, abundant in extracellular fluids

mg

Magnesium, bone, metabolic functions

i

iodine, make thyroid hormones

fe

iron, component of hemoglobin and enzymes