Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart2h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Cancer

Anatomy & Physiology

3. Energy & Cell Processes

Cancer

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Multiple Choice

Which of the following accurately characterizes our current understanding of cancer development?

Mutations in a single gene cannot significantly increase susceptibility to cancer.

Study results suggest that mutations in genes that are transcribed into ncRNA do not likely contribute to cancer development.

We now understand that all cancers result from some mutation in the p53 gene.

Nearly all cancers are caused by the multistep accumulation of mutations over the life span of the individual.

In order for a cell to become fully cancerous, it typically must have at least one active oncogene and the mutation or loss of several tumor-suppressor genes.

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Verified step by step guidance

Understand that cancer is a complex disease characterized by uncontrolled cell growth and division.

Recognize that cancer development is typically a multistep process involving genetic mutations.

Identify that oncogenes and tumor-suppressor genes play crucial roles in cancer development. Oncogenes promote cell division, while tumor-suppressor genes inhibit it.

Acknowledge that for a cell to become cancerous, it often requires the activation of oncogenes and the inactivation or loss of tumor-suppressor genes.

Conclude that the accumulation of multiple genetic mutations over time is necessary for the full transformation of a normal cell into a cancerous one, aligning with the statement that nearly all cancers are caused by the multistep accumulation of mutations.