Table of contents

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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

16. The Endocrine System

Introduction to the Endocrine System

Anatomy & Physiology

16. The Endocrine System

Introduction to the Endocrine System

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Multiple Choice

At what stage of human development do the gonads begin to secrete sex hormones?

At birth

In early adulthood

During embryonic development

During puberty

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Verified step by step guidance

Understand the role of gonads: Gonads are the primary reproductive organs (testes in males and ovaries in females) responsible for producing gametes and secreting sex hormones.

Identify the stages of human development: Key stages include embryonic development, birth, childhood, puberty, and adulthood.

Recognize the function of sex hormones: Sex hormones such as testosterone and estrogen are crucial for the development of secondary sexual characteristics and reproductive function.

Determine when sex hormone secretion begins: During embryonic development, gonads differentiate but do not actively secrete sex hormones. At birth and in early childhood, hormone levels remain low.

Conclude that puberty is the stage when gonads begin active secretion of sex hormones, leading to the development of secondary sexual characteristics and reproductive maturity.