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

1. Introduction to Anatomy & Physiology

Anatomical Terms for the Arm and Hand

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Anatomical Terms for the Arm and Hand

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Multiple Choice

The infraspinatus muscle inserts on the ____________ of the humerus.

greater tubercle

deltoid tuberosity

intertubercular sulcus

lesser tubercle

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Verified step by step guidance

Step 1: Begin by identifying the infraspinatus muscle and its function. The infraspinatus is one of the rotator cuff muscles, responsible for lateral rotation of the arm and stabilization of the shoulder joint.

Step 2: Understand the anatomy of the humerus. The humerus has several key landmarks relevant to muscle attachment, including the greater tubercle, lesser tubercle, deltoid tuberosity, and intertubercular sulcus.

Step 3: Recall that the rotator cuff muscles, including the infraspinatus, typically insert on the greater tubercle of the humerus. This is a prominent projection on the lateral side of the humerus, providing attachment points for these muscles.

Step 4: Eliminate incorrect options based on anatomical knowledge. The deltoid tuberosity is the insertion point for the deltoid muscle, not the infraspinatus. The intertubercular sulcus is a groove for the tendon of the biceps brachii, and the lesser tubercle is the insertion point for the subscapularis muscle.

Step 5: Conclude that the correct insertion point for the infraspinatus muscle is the greater tubercle of the humerus, based on its role in lateral rotation and stabilization of the shoulder joint.