12 Questions
What is a characteristic feature of tumor cells related to their replicative potential?
Unrestricted proliferative capacity
What is a mechanism by which tumors evade programmed cell death?
Inactivation of p53
What process do tumors rely on for the formation of a vascular supply?
Angiogenesis
What is a common defect in tumors related to DNA repair?
Failure to repair DNA damage
What are tumors resistant to in terms of cellular proliferation?
Cyclin-dependent kinases (CDKIs)
What characteristic of tumor metastases leads to the majority of cancer deaths?
Ability to invade and metastasize
Which of the following best defines a neoplasm?
A mass of tissue formed as a result of abnormal, excessive, uncoordinated, autonomous and purposeless proliferation of cells
What is the main characteristic of neoplastic cells?
Loss of control and regulation of replication
How are tumors classified?
Taking into account their morphological structure, localization, and growth patterns
What key change indicates malignancy in tumors?
Capacity to proliferate without external stimuli
What is the role of autonomy in neoplastic growth?
Dependence on the 'feeding' blood vessels and innervation
What process involves new tissue formation due to hormonal stimulation?
Hyperplasia
Test your knowledge on the definitions of neoplasia and tumor with this quiz. Explore the characteristics of abnormal cell proliferation, relative autonomy, and progressive growth associated with tumors.
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