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 anterior muscles of the thigh originate on the os coxae?

Biceps femoris

Rectus femoris

Sartorius

Vastus lateralis

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Verified step by step guidance

Step 1: Understand the anatomy of the anterior thigh muscles. The anterior thigh muscles are part of the quadriceps group and include the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius, along with the sartorius muscle.

Step 2: Identify the origin of each muscle listed in the problem. The origin refers to the point where the muscle attaches to the bone and does not move during contraction.

Step 3: Recall that the rectus femoris originates from the os coxae (specifically the anterior inferior iliac spine and the superior margin of the acetabulum). This makes it unique among the quadriceps muscles, as the others originate from the femur.

Step 4: Note that the sartorius also originates from the os coxae (specifically the anterior superior iliac spine). This muscle is involved in flexion, abduction, and lateral rotation of the hip, as well as flexion of the knee.

Step 5: Exclude the vastus lateralis and biceps femoris from consideration, as neither originates from the os coxae. The vastus lateralis originates from the femur, and the biceps femoris is part of the posterior thigh muscles, originating from the ischial tuberosity and femur.