Introduction to Blood

Which statement best describes a phlebotomist?

• Professional trained to draw patient blood

• Scientist who analyzes blood cell varieties

• Technician who measures blood pressure only

• Nurse who administers intravenous medicines

A person faints at the sight of blood and avoids blood tests. What term best fits this condition?

• Hemostasis, preventing blood from flowing

• Hematopoiesis, forming new blood cells

• Hematophobia, a fear of blood exposure

• Hemoglobinopathy, abnormal red pigments

Which statement best describes blood?

• Blood is a type of epithelial tissue

• Blood is a specialized connective tissue

• Blood is a form of nervous tissue

• Blood is purely muscular tissue

Which items are included in the cellular portion of blood?

• Fibrinogen, antibodies, ions

• Hormones, salts, glucose

• Water, proteins, amino acids

• Red cells, white cells, platelets

Which statement best defines hematocrit?

• Volume of plasma lost during clotting

• Rate at which red cells are produced daily

• Number of white cells per microliter of blood

• Percentage of blood that is cells versus plasma

Which process and organs are responsible for removing old blood cells?

• Phagocytosis in the liver and spleen

• Diffusion in the kidneys and lungs

• Filtration in the liver and pancreas

• Secretion in the spleen and stomach

Which term correctly names red blood cells in scientific terminology?

• Myocytes in human circulation

• Leukocytes in human circulation

• Erythrocytes in human circulation

• Thrombocytes in human circulation

Tags

NGSS.MS-LS1-3

What is the typical shape of healthy erythrocytes?

• Biconcave disc morphology

• Cuboidal block morphology

• Spherical capsule morphology

• Elongated spindle morphology

Approximately how many red blood cells are found in a cubic millimeter of blood?

• About five million cells

• About fifty million cells

• About fifty thousand cells

• About five hundred cells

Which statement best explains why erythrocytes can carry large amounts of oxygen?

• They lack a nucleus for more space

• They divide rapidly during travel

• They actively perform photosynthesis

• They store energy as large lipids