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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

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Multiple Choice

Which of the following is an action of the iliopsoas muscle at the hip joint?

Abduction of the hip

Extension of the hip

Adduction of the hip

Flexion of the hip

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Verified step by step guidance

Step 1: Begin by identifying the iliopsoas muscle, which is composed of two muscles: the psoas major and the iliacus. These muscles are located in the anterior region of the hip and are key players in hip movement.

Step 2: Understand the anatomical position and attachment points of the iliopsoas muscle. The psoas major originates from the lumbar vertebrae, while the iliacus originates from the iliac fossa of the pelvis. Both muscles insert onto the lesser trochanter of the femur.

Step 3: Analyze the function of the iliopsoas muscle based on its location and attachment. Since the muscle crosses the hip joint anteriorly, it acts to decrease the angle between the thigh and the torso, which is known as flexion of the hip.

Step 4: Compare flexion with the other options provided in the question. Abduction refers to moving the leg away from the midline, extension refers to increasing the angle between the thigh and torso, and adduction refers to moving the leg toward the midline. None of these actions align with the primary function of the iliopsoas muscle.

Step 5: Conclude that the correct action of the iliopsoas muscle at the hip joint is flexion of the hip, as this is consistent with its anatomical structure and function.