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

10. Muscles

Origin and Insertion

Anatomy & Physiology

10. Muscles

Origin and Insertion

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which muscle of the arm has three heads or points of origin?

Biceps brachii

Coracobrachialis

Brachialis

Triceps brachii

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the question by identifying the key terms. The question asks about a muscle in the arm that has three heads or points of origin. This means the muscle has three distinct attachment sites where it originates.

Step 2: Review the anatomy of the arm muscles. The arm contains several muscles, including the biceps brachii, coracobrachialis, brachialis, and triceps brachii. Each muscle has unique characteristics and functions.

Step 3: Focus on the triceps brachii. The name 'triceps' itself provides a clue: 'tri-' means three, and '-ceps' refers to heads. This indicates that the triceps brachii has three points of origin.

Step 4: Confirm the points of origin of the triceps brachii. The triceps brachii originates from three locations: the long head originates from the infraglenoid tubercle of the scapula, the lateral head originates from the posterior surface of the humerus above the radial groove, and the medial head originates from the posterior surface of the humerus below the radial groove.

Step 5: Compare the triceps brachii with the other muscles listed. The biceps brachii has two heads (hence 'bi-' meaning two), the coracobrachialis has a single point of origin, and the brachialis also has a single point of origin. This confirms that the triceps brachii is the correct answer.