Multiple Choice
In the context of hemostasis, which blood component is primarily acted upon by aspirin to reduce clot formation?
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17. The Blood
Platelets: Hemostasis
Multiple Choice
In the context of hemostasis, which of the following are the smallest formed elements found in blood?
A
Erythrocytes (red blood cells)
B
Plasma proteins (e.g., fibrinogen)
C
Neutrophils
D
Platelets (thrombocytes)
Verified step by step guidance1
Step 1: Understand the context of hemostasis, which is the process that stops bleeding by forming clots to seal damaged blood vessels.
Step 2: Identify the formed elements in blood, which include erythrocytes (red blood cells), leukocytes (white blood cells such as neutrophils), and platelets (thrombocytes). Plasma proteins are not formed elements but soluble proteins in the plasma.
Step 3: Compare the sizes of these formed elements: erythrocytes are relatively large cells, neutrophils are a type of white blood cell and are larger than platelets, and platelets are small cell fragments derived from megakaryocytes.
Step 4: Recognize that platelets are the smallest formed elements in blood and play a crucial role in hemostasis by aggregating to form a platelet plug at the site of vessel injury.
Step 5: Conclude that among the options given, platelets (thrombocytes) are the smallest formed elements involved in hemostasis.
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