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 lumbar plexus is subdivided into a(n) division and a(n) division.

medial; lateral

anterior; posterior

dorsal; ventral

superior; inferior

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Verified step by step guidance

Step 1: Begin by understanding the lumbar plexus, which is a network of nerves formed by the anterior rami of the spinal nerves L1-L4. It provides motor and sensory innervation to the lower limb and parts of the pelvis.

Step 2: Recall that the lumbar plexus is divided into two main divisions based on anatomical orientation: anterior and posterior divisions. These divisions are responsible for innervating different muscle groups and regions.

Step 3: Eliminate incorrect options by considering anatomical terminology. For example, 'medial; lateral' and 'superior; inferior' are not standard divisions used to describe the lumbar plexus.

Step 4: Understand that 'dorsal; ventral' refers to general anatomical directions but does not specifically describe the divisions of the lumbar plexus. The correct terms are 'anterior; posterior' divisions.

Step 5: Conclude that the lumbar plexus is subdivided into an anterior division and a posterior division, which are the correct anatomical terms for its organization.