Final answer:
Capillary blood is a mixture of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets.
Step-by-step explanation:
Capillary blood is a mixture of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets. The liquid component of blood, called plasma, makes up more than half of blood volume and consists of water and various dissolved substances such as proteins, glucose, ions, hormones, and gases. Red blood cells are responsible for carrying oxygen, while white blood cells play a role in the immune response. Platelets are involved in blood clotting.