#1
Which component of blood is primarily responsible for carrying oxygen?
Red blood cells
ExplanationRed blood cells carry oxygen from the lungs to the rest of the body.
#2
Which component of blood is essential for blood clotting?
Platelets
ExplanationPlatelets play a crucial role in forming blood clots to prevent excessive bleeding.
#3
Which component of blood is responsible for carrying nutrients, hormones, and waste products?
Plasma
ExplanationPlasma transports nutrients, hormones, and waste products throughout the circulatory system.
#4
What is the average lifespan of a red blood cell in the human body?
120 days
ExplanationRed blood cells typically live for about 120 days before being replaced.
#5
Which blood type is known as the universal donor?
O
ExplanationType O blood is considered the universal donor as it lacks A or B antigens.
#6
What is the term for the process of the formation of blood cells?
Hematopoiesis
ExplanationHematopoiesis is the process of blood cell formation, occurring mainly in the bone marrow.
#7
Which of the following is a condition where there is a decrease in the number of red blood cells or hemoglobin in the blood?
Anemia
ExplanationAnemia is characterized by a reduced number of red blood cells, leading to insufficient oxygen delivery.
#8
Which blood type is considered the universal recipient?
AB
ExplanationType AB blood is the universal recipient as it can receive blood from any A, B, AB, or O blood types.
#9
Which type of white blood cell is primarily responsible for phagocytosis?
Neutrophil
ExplanationNeutrophils are white blood cells that engulf and digest foreign particles through phagocytosis.
#10
What is the function of white blood cells in the body?
To fight infections
ExplanationWhite blood cells protect the body by fighting against infections and foreign substances.
#11
Which hormone regulates the production of red blood cells?
Erythropoietin
ExplanationErythropoietin is a hormone that stimulates the production of red blood cells in the bone marrow.