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 Heart3h 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

1. Introduction to Anatomy & Physiology

Variation in Anatomy & Physiology

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Variation in Anatomy & Physiology

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Multiple Choice

Why do anatomical and molecular features often fit a similar nested pattern in organisms?

Because molecular features are always more complex than anatomical features.

Because they are both influenced by common ancestry and evolutionary processes.

Because anatomical features are determined solely by environmental factors.

Because they both evolve independently without any influence from each other.

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Verified step by step guidance

Understand that both anatomical and molecular features are influenced by evolutionary processes. This means that they have developed over time through mechanisms such as natural selection, genetic drift, and mutation.

Recognize that common ancestry plays a significant role in the development of these features. Organisms that share a common ancestor will have inherited certain traits, both anatomical and molecular, from that ancestor.

Consider how these inherited traits can lead to a nested pattern. As species diverge from a common ancestor, they retain some of the ancestral traits while also developing new ones, creating a branching pattern of similarities and differences.

Acknowledge that while environmental factors can influence anatomical features, they are not the sole determinants. Both anatomical and molecular features are shaped by a combination of genetic inheritance and environmental influences.

Realize that anatomical and molecular features do not evolve completely independently. They are interconnected, as molecular changes (such as mutations in DNA) can lead to changes in anatomical features over time.