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

27. The Reproductive System

Introduction to the Reproductive System

Anatomy & Physiology

27. The Reproductive System

Introduction to the Reproductive System

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Multiple Choice

What is the ideal duration of one complete menstrual cycle in humans?

21 days

14 days

35 days

28 days

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Verified step by step guidance

Step 1: Understand the concept of the menstrual cycle. The menstrual cycle is a recurring physiological process in females that prepares the body for potential pregnancy. It involves hormonal changes and is divided into phases: the menstrual phase, follicular phase, ovulation, and luteal phase.

Step 2: Learn the typical duration of the menstrual cycle. In most healthy individuals, the average duration of one complete menstrual cycle is approximately 28 days, though it can vary slightly between individuals (typically ranging from 21 to 35 days).

Step 3: Compare the given options to the average duration. The options provided are 21 days, 14 days, 35 days, and 28 days. Based on the average duration, 28 days is the most accurate answer.

Step 4: Recognize that 14 days is not correct because it represents only the luteal phase duration, not the entire cycle. Similarly, 21 days and 35 days are outside the average range for most individuals.

Step 5: Conclude that the ideal duration of one complete menstrual cycle in humans is 28 days, as it aligns with the average physiological cycle length.