Blood components Knowledge-Based Download PDF

Questions

1. 1.

   When an anticoagulated sample of whole blood is separated by centrifugation, which term designates the thin, pale layer formed between the plasma and the packed red blood cells?

   • A) Serum
   • B) Hematocrit
   • C) Buffy coat
   • D) Fibrin mesh
2. 2.

   Which cellular component of human blood contains a nucleus and functions primarily to defend the body against infectious pathogens and foreign substances?

   • A) White blood cells (leukocytes)
   • B) Red blood cells (erythrocytes)
   • C) Blood platelets (thrombocytes)
   • D) Blood plasma
3. 3.

   Which component of human blood constitutes its liquid extracellular matrix, consisting primarily of water and functioning to transport dissolved nutrients, hormones, and metabolic wastes throughout the body?

   • A) Leukocytes
   • B) Plasma
   • C) Erythrocytes
   • D) Platelets
4. 4.

   Which component of human blood lacks a nucleus at maturity and contains the iron-rich protein hemoglobin, specialized for transporting oxygen to body tissues?

   • A) White blood cells (leukocytes)
   • B) Blood plasma
   • C) Red blood cells (erythrocytes)
   • D) Platelets (thrombocytes)
5. 5.

   Which component of human blood consists of cell fragments that are primarily responsible for initiating the formation of a blood clot following vascular injury?

   • A) Platelets (thrombocytes)
   • B) Erythrocytes (red blood cells)
   • C) Leukocytes (white blood cells)
   • D) Blood plasma