MICROANATOMY

BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS

BLOOD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Inherited disorder, abnormal hemoglobin causes RBC to change shape (crescent or sickle shape) abnormal shaped RBC’s block blood flow causing pain and tissue death.
A
leukemia
B
sickle cell anemia
C
hemophilia
D
polycythemia
Explanation: 

Detailed explanation-1: -People who have this form of SCD inherit two genes, one from each parent, that code for hemoglobin “S.” Hemoglobin S is an abnormal form of hemoglobin that causes the red cells to become rigid, and sickle shaped. This is commonly called sickle cell anemia and is usually the most severe form of the disease.

Detailed explanation-2: -Red blood cells are usually round and flexible, so they move easily through blood vessels. In sickle cell anemia, some red blood cells are shaped like sickles or crescent moons. These sickle cells also become rigid and sticky, which can slow or block blood flow.

Detailed explanation-3: -Hemoglobin is a protein in red blood cells that carries oxygen throughout the body. With SCD, the hemoglobin forms into stiff rods within the red blood cells. This changes the shape of the red blood cells. The cells are supposed to be disc-shaped, but this changes them into a crescent, or sickle, shape.

Detailed explanation-4: -Sickle Cell Anemia: occurs when an abnormal hemoglobin S gene is inherited from both parents. The red blood cells are normally shaped like a disc but the distorted red blood cells of sickle cell anemia are shaped like crescents.

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