alleryStart learning →What is the process by which leukocytes squeeze between adjacent cells of a vessel wall?
ADiapedesis
BChemotaxis
CAgglutination
DHemolysis
Answer & Solution
Correct answer: A. Diapedesis
1. Leukocytes do their real work in the tissues, so they must leave the bloodstream.
2. They squeeze through adjacent cells of the vessel wall in a process called diapedesis, also known as emigration.
3. Chemotaxis is the separate step of moving towards a chemical signal once outside the vessel.
4. Agglutination and hemolysis describe clumping and destruction of red cells in a transfusion reaction, so neither belongs here.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.4 Leukocytes and Platelets_
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