MICROANATOMY

Detailed explanation-1: -The four substances transported by blood are: Respiratory gases like oxygen and carbon dioxide (from and to the lungs). Nutrients (from the digestive system). Waste materials (from different body parts to the excretory system).

Detailed explanation-2: -Oxygen, nutrients and hormones are delivered around the body in the blood and carbon dioxide and other waste products are removed.

Detailed explanation-3: -These include oxygen, carbon dioxide, nutrients (such as glucose and amino acids), hormones and waste chemicals such as urea. These substances are transported in a medium called blood through the body through tubes called blood vessels. The blood is forced around these vessels by a pump-the heart.

Detailed explanation-4: -Blood is the most important fluid in the body for transporting nutrients and oxygen.

Detailed explanation-5: -Plasma carries water, salts, and enzymes. The main role of plasma is to take nutrients, hormones, and proteins to the parts of the body that need it.