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

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which of the following body systems acts as a fast-acting control system for the body?

Respiratory system

Endocrine system

Nervous system

Digestive system

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Verified step by step guidance

Step 1: Begin by understanding the role of each body system mentioned in the problem. The respiratory system is responsible for gas exchange, providing oxygen to the body and removing carbon dioxide. The digestive system processes food to extract nutrients and energy. The endocrine system regulates long-term processes like growth, metabolism, and reproduction through hormones.

Step 2: Recognize the key phrase in the question: 'fast-acting control system.' This indicates a system that can quickly respond to changes in the environment or internal conditions.

Step 3: Compare the nervous system to the endocrine system. While the endocrine system uses hormones to regulate processes, it is slower because hormones travel through the bloodstream. The nervous system, on the other hand, uses electrical signals to transmit information rapidly between the brain, spinal cord, and peripheral nerves.

Step 4: Recall that the nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). Together, they coordinate immediate responses to stimuli, such as reflex actions or sensory input processing.

Step 5: Conclude that the nervous system is the fast-acting control system for the body, as it is designed to quickly detect, interpret, and respond to changes in the environment or internal conditions.