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 muscles are primarily targeted during the tubing (shoulder) internal rotation exercise?

Supraspinatus

Infraspinatus

Subscapularis

Deltoid

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Verified step by step guidance

Understand the anatomy of the rotator cuff muscles, which include the supraspinatus, infraspinatus, teres minor, and subscapularis. These muscles play a key role in stabilizing the shoulder joint and facilitating various movements.

Recognize that internal rotation of the shoulder involves rotating the arm inward toward the body. This movement is primarily facilitated by the subscapularis muscle, which is part of the rotator cuff group.

Identify the subscapularis muscle's location and function. It is located on the anterior surface of the scapula and attaches to the lesser tubercle of the humerus. Its primary role is internal rotation of the humerus at the shoulder joint.

Differentiate the roles of other muscles listed in the problem. The supraspinatus assists in abduction of the arm, the infraspinatus and teres minor are responsible for external rotation, and the deltoid contributes to various shoulder movements, including abduction, flexion, and extension.

Conclude that during the tubing (shoulder) internal rotation exercise, the subscapularis is the primary muscle targeted because it is the main muscle responsible for internal rotation of the shoulder joint.