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

The anterior rami of spinal nerves form which of the following nerve plexuses?

Cervical, brachial, lumbar, and sacral plexuses

Cervical, thoracic, and coccygeal plexuses

Brachial, thoracic, and cranial plexuses

Cranial, thoracic, lumbar, and coccygeal plexuses

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Verified step by step guidance

Understand the anatomy of spinal nerves: Spinal nerves are mixed nerves that emerge from the spinal cord and divide into anterior (ventral) and posterior (dorsal) rami. The anterior rami are responsible for forming nerve plexuses, which are networks of intersecting nerves.

Learn the major nerve plexuses formed by the anterior rami: The primary nerve plexuses formed by the anterior rami are the cervical, brachial, lumbar, and sacral plexuses. These plexuses serve different regions of the body, providing motor and sensory innervation.

Recognize that thoracic spinal nerves generally do not form plexuses: Unlike the cervical, brachial, lumbar, and sacral regions, the anterior rami of thoracic spinal nerves primarily form intercostal nerves rather than plexuses. This is an important distinction to eliminate incorrect options.

Eliminate incorrect answer choices: Review the options provided and eliminate those that include plexuses not formed by anterior rami (e.g., cranial plexuses, which do not exist, or thoracic plexuses, which are not formed by anterior rami). Focus on the correct combination of cervical, brachial, lumbar, and sacral plexuses.

Select the correct answer: Based on the anatomical knowledge of spinal nerve plexuses, choose the option that lists cervical, brachial, lumbar, and sacral plexuses as the correct answer.