Question

What antibacterial substances are present in sebaceous secretions and sweat on the skin?

Options

• Long-chain fatty acids and salt

• Lysozyme and interferon

• Complement proteins and acute-phase proteins

• Spermine and zinc

Answer 1

Sebaceous secretions contain long-chain fatty acids, and drying sweat contains salt, both of which show protective activity on the skin. These physiological barriers inhibit microbial growth and maintain the skin's antimicrobial properties.