What are the primary components of blood?

What are the primary components of blood?

• A. Plasma, gall, and digestive enzymes
• B. Red blood cells, white blood cells, and plasma
• C. Muscle cells, nerve cells, and blood plasma
• D. Bone cells, red blood cells, and fat

Answer: (B)

The primary components of blood include red blood cells, white blood cells, and plasma. Red blood cells (erythrocytes) are responsible for transporting oxygen from the lungs to the body tissues and returning carbon dioxide for exhalation. White blood cells (leukocytes) play a crucial role in the immune system, protecting the body against infections and foreign invaders. Plasma is the liquid component of blood that carries cells and proteins throughout the body, serving as a medium for transporting nutrients, hormones, and waste products. The other options include components that are not actually part of blood or are not relevant to its primary composition. For instance, gall and digestive enzymes are related to the digestive system rather than blood. Muscle cells and nerve cells are types of tissues in the body but do not constitute blood. Bone cells and fat are also not blood components; instead, they relate to other bodily functions and structures. Thus, the correct choice accurately reflects the essential elements that make up blood and their respective roles in the circulatory and immune systems.

The primary components of blood include red blood cells, white blood cells, and plasma. Red blood cells (erythrocytes) are responsible for transporting oxygen from the lungs to the body tissues and returning carbon dioxide for exhalation. White blood cells (leukocytes) play a crucial role in the immune system, protecting the body against infections and foreign invaders. Plasma is the liquid component of blood that carries cells and proteins throughout the body, serving as a medium for transporting nutrients, hormones, and waste products.

The other options include components that are not actually part of blood or are not relevant to its primary composition. For instance, gall and digestive enzymes are related to the digestive system rather than blood. Muscle cells and nerve cells are types of tissues in the body but do not constitute blood. Bone cells and fat are also not blood components; instead, they relate to other bodily functions and structures. Thus, the correct choice accurately reflects the essential elements that make up blood and their respective roles in the circulatory and immune systems.