Blood and Its Functions Quiz

Where do blood cells primarily form?

• Yellow bone marrow

• Red bone marrow

• Lymph nodes

• Spleen

What are the formed elements in blood?

• Plasma and serum

• Red blood cells, white blood cells, and platelets

• Hormones and enzymes

• Proteins and lipids

What factors can cause variations in blood volume?

• Age and gender

• Body size and fluid concentration

• Diet and exercise

• Sleep and stress

Where is plasma found in a centrifuge tube?

• Bottom

• Middle

• Top

• Side

What is the term for the percentage of RBCs in blood?

• Hemoglobin

• Hematocrit

• Plasma

• Buffy coat

What is the main function of a blood draw in a lab?

• To increase blood volume

• To detect blood abnormalities

• To change blood color

• To reduce blood pressure

What is the primary color of the plasma layer in a centrifuged blood sample?

• Red

• Yellow

• Clear, straw-colored

• Blue

What shape do red blood cells have?

• Spherical

• Cuboidal

• Biconcave disc

• Cylindrical

What percentage of a red blood cell is hemoglobin?

• One-half

• One-third

• One-fourth

• Two-thirds

Which type of white blood cells do not have noticeable granules?

• Granulocytes

• Agranulocytes

• Erythrocytes

• Platelets