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

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

The extensor muscle that branches to form four tendons on the back of the hand is the __________.

flexor carpi ulnaris

abductor pollicis brevis

extensor pollicis longus

extensor digitorum

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the anatomy of the extensor muscles in the forearm and hand. Extensor muscles are responsible for extending the fingers and wrist, and they are located on the posterior side of the forearm.

Step 2: Identify the extensor digitorum muscle. This muscle originates from the lateral epicondyle of the humerus and inserts into the extensor expansions of the fingers (digits 2-5). It is responsible for extending the fingers and wrist.

Step 3: Recognize the branching of the extensor digitorum muscle. It forms four tendons that extend to the fingers, allowing for coordinated extension of the digits.

Step 4: Compare the extensor digitorum to the other muscles listed in the options. The flexor carpi ulnaris is a flexor muscle, not an extensor. The abductor pollicis brevis is involved in thumb movement, and the extensor pollicis longus extends the thumb, not the fingers.

Step 5: Conclude that the extensor digitorum is the correct muscle responsible for forming four tendons on the back of the hand, as described in the problem.