What is transported by blood?

Blood transports essential substances throughout the body, including oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs for exhalation. It also carries nutrients absorbed from the digestive tract to cells, hormones from endocrine glands to target organs, and waste products to the kidneys and liver for detoxification and excretion. Additionally, blood plays a crucial role in regulating body temperature and maintaining pH balance.