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

7. The Skeletal System

Bones of the Upper Limb

Anatomy & Physiology

7. The Skeletal System

Bones of the Upper Limb

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Problem 15

Textbook Question

Which of the following is not a proximal carpal bone?

a. Hamate
b. Pisiform
c. Scaphoid
d. Lunate

Verified step by step guidance

Step 1: Understand the anatomy of the carpal bones. The carpal bones are eight small bones that make up the wrist, arranged in two rows: the proximal row (closer to the forearm) and the distal row (closer to the hand).

Step 2: Identify the bones in the proximal row. The proximal carpal bones include the scaphoid, lunate, triquetrum, and pisiform.

Step 3: Identify the bones in the distal row. The distal carpal bones include the trapezium, trapezoid, capitate, and hamate.

Step 4: Compare the options provided in the question with the list of proximal carpal bones. Determine which bone is not part of the proximal row.

Step 5: Conclude that the bone not listed in the proximal row is the correct answer to the question.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Carpal Bones

The carpal bones are a group of eight small bones in the wrist that are divided into two rows: proximal and distal. The proximal row consists of the scaphoid, lunate, triquetrum, and pisiform, while the distal row includes the trapezium, trapezoid, capitate, and hamate. Understanding the classification of these bones is essential for identifying which bones belong to each row.

Proximal vs. Distal Carpal Bones

Proximal carpal bones are those located closer to the forearm, while distal carpal bones are nearer to the fingers. The proximal row includes the scaphoid, lunate, triquetrum, and pisiform, which play crucial roles in wrist movement and stability. Distinguishing between these two groups is vital for anatomical and clinical discussions regarding wrist injuries and treatments.

Anatomical Terminology

Anatomical terminology provides a standardized language for describing the locations and relationships of body structures. Terms like 'proximal' and 'distal' help clarify positions relative to the center of the body or point of attachment. Familiarity with this terminology is important for accurately interpreting questions related to anatomy, such as identifying specific bones in the wrist.

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Related Practice

Textbook Question

Use key choices to identify the bone descriptions that follow.

Key:

a. carpals

b. femur

c. fibula

d. humerus

e. radius

f. tarsals

g. tibia

h. ulna

______ (1) articulates with the acetabulum and the tibia

______ (2) forms the lateral aspect of the ankle

______ (3) bone that 'carries' the hand

______ (4) the wrist bones

______ (5) end shaped like a monkey wrench

______ (6) articulates with the capitulum of the humerus

______ (7) largest bone of this 'group' is the calcaneus

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Textbook Question

Justiniano worked in a poultry-packing plant where his job was cutting open chickens and stripping out their visceral organs. After work, he typed for long hours on his computer keyboard, writing a book about his work in the plant. Soon, his wrist and hand began to hurt whenever he flexed it, and he began to awaken at night with pain and tingling on the thumb half of his hand. What condition did he probably have?

The 'elbow bone' is called the:

a. Trochlea

b. Capitulum

c. Olecranon

d. Deltoid tuberosity

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