Blood Introduction Quiz

What is the approximate percentage of body weight that is comprised of blood?

5-6%
7-8% (correct)
15-20%
10-12%

What is the approximate pH of blood?

7.2
7.8
7.4 (correct)
7.6

What is the main reason for the high viscosity of blood?

Due to the presence of cells and plasma proteins (correct)
Due to the presence of plasma proteins
Due to the high water content
Due to the high pH level

What is the percentage of water in plasma?

93-95% (B) Signup and view all the answers

What is the function of blood in regulating body temperature?

Body temperature regulation (D) Signup and view all the answers

What is the component of blood that constitutes most of the plasma solute by weight?

Plasma protein (B) Signup and view all the answers

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 (C) Signup and view all the answers

Which of the following acts on pluripotent stem cells?

Stem cell factor(SCF) (D) Signup and view all the answers

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 (B) Signup and view all the answers

Which of the following is not an action of Interleukin-1(IL-1)?

Acts on pluripotent stem cells (A) Signup and view all the answers

What is the function of Granulocyte-Colony Stimulating factor(G-CSF)?

Acts on granulocytic progenitor cell (B) Signup and view all the answers

What is the result of the action of Thrombopoetin on progenitor cells?

Production of platelets (A) Signup and view all the answers

What is the concentration of albumin in plasma?

4.5gm/100ml (C) Signup and view all the answers

What is the average lifespan of red blood cells in circulation?

120 days (C) Signup and view all the answers

Which protein is involved in transporting thyroxin?

Thyroxin binding globulin (C) Signup and view all the answers

What stimulates the production of erythropoietin?

Hypoxia (A) Signup and view all the answers

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 (C) Signup and view all the answers

What is the term for the process of origin, development, and maturation of red blood cells?

Erythropoiesis (B) Signup and view all the answers

What is the result of iron deficiency in terms of red blood cell size?

Microcytic anaemia (C) Signup and view all the answers

What is the molecular weight of albumin?

67000 (A) Signup and view all the answers

What is the result of a deficiency of Vit.B12 in terms of red blood cell size?

Macrocytic anaemia (C) Signup and view all the answers

What is the purpose of the specific polysaccharides and proteins on the surface of red blood cells?

To confer blood type or group (D) Signup and view all the answers

What type of stem cells can give rise to precursor cells of any blood cells?

Pluripotent stem cells (C) Signup and view all the answers

What is the function of albumin in the body?

Maintains plasma colloid osmotic pressure (A) Signup and view all the answers

What is the approximate diameter of a red blood cell?

7.5μm (B) Signup and view all the answers

What is the term for the process of blood cell production?

Hemopoiesis (A) Signup and view all the answers

What is the molecular weight of hemoglobin?

64,450 (D) Signup and view all the answers

Where can extramedullary hemopoiesis occur in the body?

In the liver and spleen (D) Signup and view all the answers

What percentage of erythropoietin is produced by the liver?

10% (C) Signup and view all the answers

What is the primary site of absorption of Vitamin B12?

Terminal ileum (D) Signup and view all the answers