Final answer:
The statement is false; acanthocytes and echinocytes are distinct types of abnormally shaped red blood cells, not generic crenated cells.
Step-by-step explanation:
The statement "Acanthocytes and echinocytes are both types of crenated cells" is false. While both acanthocytes and echinocytes are abnormal red blood cell shapes, they differ in their characteristics. Acanthocytes have irregularly spaced spikes on their surface, often due to an underlying condition such as liver disease or abetalipoproteinemia. Echinocytes, also known as burr cells, display uniformly spaced, blunt projections which can be an artifact of sample preparation or associated with a variety of pathological and physiological states. The term 'crenation' generally refers to cells that have assumed a scalloped, or notched edge, which can resemble the appearance of echinocytes but it is not a specific cell type itself.