Question

which type of anemia is due to a condition of being without growth of all types of blood cells by the bone marrow?
sickle cell anemia
iron deficiency anemia
aplastic anemia
pernicious anemia
question 6
1 pts
when an injury occurs, thrombocytes stick to the damaged area of the blood vessel wall and form clumps to block the blood flow. this process is known as:
plasmapheresis
poikilocytosis
hematopoiesis
aggregation

Explanation:

• For the first question:
• Sickle cell anemia is due to abnormal hemoglobin (sickle - shaped red blood cells).
• Iron deficiency anemia is caused by lack of iron for hemoglobin synthesis.
• Aplastic anemia is characterized by the bone marrow not producing all types of blood cells (red blood cells, white blood cells, platelets).
• Pernicious anemia is due to lack of vitamin B12 (usually due to lack of intrinsic factor for its absorption).
• For the second question:
• Plasmapheresis is the removal of plasma from the blood.
• Poikilocytosis is the presence of abnormally shaped red blood cells.
• Hematopoiesis is the production of blood cells.
• Aggregation is the clumping of thrombocytes (platelets) at the site of injury to block blood flow.

Answer:

1. aplastic anemia
2. aggregation