What are the essential elements found in human hair?

Hair is primarily composed of a protein called keratin, which contains various elements essential for its structure and function. The primary constituents are carbon, oxygen, hydrogen, nitrogen, and sulfur.

• Carbon is the backbone of the hair's molecular structure and is crucial for forming the keratin proteins.

• Oxygen is involved in the metabolic processes within the hair follicles and helps support the overall health of the hair.

• Hydrogen is essential in maintaining the bonds between amino acids, which form the protein structure of hair.

• Nitrogen is a key component of amino acids, the building blocks of proteins, and is vital in the formation of keratin.

• Sulfur is also important as it forms disulfide bonds that provide strength and stability to the hair structure.

The other options include elements that are not primary components of hair's structure, focusing on minerals and trace elements that may play different roles in the body but do not form the fundamental makeup of hair. Hence, the first option accurately reflects the essential elements found in human hair.