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 areas of the body are primarily innervated by spinal nerves?

Smooth muscle and glands of the digestive tract

Special sense organs such as the eyes and ears

Cardiac muscle of the heart

Skeletal muscles and skin of the trunk and limbs

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Verified step by step guidance

Understand the role of spinal nerves: Spinal nerves are part of the peripheral nervous system and emerge from the spinal cord. They are responsible for transmitting motor, sensory, and autonomic signals between the spinal cord and the rest of the body.

Identify the primary targets of spinal nerve innervation: Spinal nerves primarily innervate skeletal muscles and the skin of the trunk and limbs. This includes voluntary motor control of skeletal muscles and sensory input from the skin.

Differentiate spinal nerve functions from other nervous system components: Spinal nerves do not primarily innervate smooth muscle, glands, or cardiac muscle. These are typically controlled by the autonomic nervous system (sympathetic and parasympathetic divisions). Special sense organs like the eyes and ears are innervated by cranial nerves, not spinal nerves.

Relate spinal nerve function to body movement and sensation: Spinal nerves are essential for voluntary movements of the trunk and limbs and for transmitting sensory information such as touch, pain, and temperature from the skin.

Conclude the correct answer: Based on the above understanding, spinal nerves primarily innervate skeletal muscles and the skin of the trunk and limbs, making this the correct answer.