The formed elements of blood are the red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Blood cells and platelets make up approximately 45% of whole blood volume. Hematocrit is the percentage of total blood volume that is occupied by red blood cells.
http://www.physiologyweb.com/figures/physiology_illustration_mldtxQRJM8Hb5XThLuOWHp4Y4ei14Y85_whole_blood_is_composed_of_plasma_and_formed_elements.html
Whole blood is composed of plasma (fluid portion of blood) and formed elements (blood cells and platelets). Plasma is the fluid portion of blood that contains proteins, ions, nutrients, hormones, antibodies, metabolites, enzymes, clotting factors, etc. Plasma is straw-colored and makes up approximately 55% of whole blood volume.
http://www.physiologyweb.com/figures/physiology_illustration_mldtxQRJM8Hb5XThLuOWHp4Y4ei14Y85_whole_blood_is_composed_of_plasma_and_formed_elements.html
45% is the typical percentage volume of formed elements in whole blood. This percentage, called the hematocrit, varies with the degree of hydration in an individual.
http://www.answers.com/Q/What_is_the_percentage_of_formed_elements_in_blood
Blood is considered a type of connective tissue composed of approximately 55 percent intercellular fluid (the plasma) and 45 percent formed elements. The contents of the blood maintain the water content of the body, protect against disease, and maintain an acid-base equilibrium in the internal environment.
http://starsandseas.com/SAS%20Physiology/Blood.htm
Erythrocytes, or red blood cells, are the most abundant of the  formed elements of the blood. The other formed elements are  leukocytes (white blood cells) and thrombocytes …(platelets). erythrocytes (red blood cells) Erythrocytes (red blood cells or RBCs) platelets, for about 250,000-500,000 per mm3 of blood.
http://www.answers.com/Q/What_is_the_percentage_of_formed_elements_in_blood
Proteins (albumin; controls blood volume and blood pressure, globulins, HDL LDL,) Electrolytes (ca++) Dissolved gases, nutrients and wastes. Formed elements. Erythrocytes (RBC) and platelets.
https://quizlet.com/3449376/blood-plasmaformed-elements-flash-cards/
45% consisting of the formed elements. Proteins, cells, and the like. This fact can be easily demonstrated by placing a specimen of whole blood in a test tube with a small amount of oxalate to prevent clotting.
http://starsandseas.com/SAS%20Physiology/Blood.htm
Blood Formed Elements. The formed elements are cells, cell remnants, and cell fragments in the blood. Red blood cells (RBCs or erythrocytes) make up more than 95% of the formed elements. Because they lack a nucleus and organelles, most RBCs in the blood stream are not fully functional cells. Instead, they serve as temporary, hemoglobin-filled containers that transport oxygen throughout the body.
https://www.getbodysmart.com/ap/circulatorysystem/blood/overview/formedelements/tutorial.html
Because the formed elements of the blood are constantly being worn out, they must be replaced by the body at a corresponding rate. Before birth, blood cells are formed in the yolk sac, liver, spleen, thymus gland, lymph nodes, and red bone marrow of the fetus.
http://starsandseas.com/SAS%20Physiology/Blood.htm
Anatomy and Physiology for Engineers. Slide 10-1. Composition of Blood. Blood = Plasma + Formed elements. Plasma is the ground substance of blood. Slightly higher density than water. Contains dissolved proteins, some dissolved gases. Formed elements consist of blood cells (red & white), and. cell fragments (platelets).
http://www.colorado.edu/MCEN/MCEN4278/index_files/Lecture10
what is the percent composition of formed elements in blood
The percent composition of formed elements in blood is 45.