30 Questions
What is the approximate percentage of body weight that is comprised of blood?
7-8%
What is the approximate pH of blood?
7.4
What is the main reason for the high viscosity of blood?
Due to the presence of cells and plasma proteins
What is the percentage of water in plasma?
93-95%
What is the function of blood in regulating body temperature?
Body temperature regulation
What is the component of blood that constitutes most of the plasma solute by weight?
Plasma protein
What is the function of Hemopoetic growth factors?
To regulate the proliferation and differentiation of hemopoetic progenitor cells and the functioning of mature blood cells
Which of the following acts on pluripotent stem cells?
Stem cell factor(SCF)
What is the result of the action of Hemopoetic growth factors on progenitor cells?
Increase production of one or other cell line when the need arises
Which of the following is not an action of Interleukin-1(IL-1)?
Acts on pluripotent stem cells
What is the function of Granulocyte-Colony Stimulating factor(G-CSF)?
Acts on granulocytic progenitor cell
What is the result of the action of Thrombopoetin on progenitor cells?
Production of platelets
What is the concentration of albumin in plasma?
4.5gm/100ml
What is the average lifespan of red blood cells in circulation?
120 days
Which protein is involved in transporting thyroxin?
Thyroxin binding globulin
What stimulates the production of erythropoietin?
Hypoxia
What is the primary function of the shape and small size of red blood cells?
To allow for rapid diffusion of oxygen and carbon dioxide
What is the term for the process of origin, development, and maturation of red blood cells?
Erythropoiesis
What is the result of iron deficiency in terms of red blood cell size?
Microcytic anaemia
What is the molecular weight of albumin?
67000
What is the result of a deficiency of Vit.B12 in terms of red blood cell size?
Macrocytic anaemia
What is the purpose of the specific polysaccharides and proteins on the surface of red blood cells?
To confer blood type or group
What type of stem cells can give rise to precursor cells of any blood cells?
Pluripotent stem cells
What is the function of albumin in the body?
Maintains plasma colloid osmotic pressure
What is the approximate diameter of a red blood cell?
7.5μm
What is the term for the process of blood cell production?
Hemopoiesis
What is the molecular weight of hemoglobin?
64,450
Where can extramedullary hemopoiesis occur in the body?
In the liver and spleen
What percentage of erythropoietin is produced by the liver?
10%
What is the primary site of absorption of Vitamin B12?
Terminal ileum
Test your knowledge of the properties and characteristics of blood, including its color, pH, viscosity, and volume. Learn about the components of blood and how it changes throughout life.
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