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

Previous problemNext problem

1:54 minutes

Problem 20

Textbook Question

Jack injures himself playing hockey, and the physician who examines him informs him that he has dislocated his pollex. What part of Jack's body did he injure?
(a) his arm
(b) his leg
(c) his hip
(d) his thumb
(e) his shoulder.

Verified step by step guidance

Step 1: Understand the term 'pollex'. In Anatomy, 'pollex' refers specifically to the thumb. This is a key term to recognize in the problem.

Step 2: Recall that a dislocation occurs when a joint is forced out of its normal position. In this case, the joint associated with the thumb (pollex) is affected.

Step 3: Review the anatomical location of the thumb. The thumb is part of the hand, which is connected to the arm, but it is distinct from other body parts such as the leg, hip, or shoulder.

Step 4: Eliminate incorrect options based on anatomical knowledge. The arm, leg, hip, and shoulder are not referred to as 'pollex' in anatomical terminology.

Step 5: Conclude that the correct answer is the thumb, as 'pollex' is the anatomical term for this specific part of the body.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

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

Anatomy of the Hand

The pollex is the anatomical term for the thumb in humans. Understanding the basic anatomy of the hand is crucial for identifying injuries related to specific fingers or digits. The thumb plays a significant role in grip and dexterity, making its dislocation particularly impactful.

Dislocation

A dislocation occurs when the bones in a joint become displaced or misaligned. This injury can cause pain, swelling, and loss of function in the affected area. Recognizing the symptoms and implications of a dislocation is essential for understanding the severity of Jack's injury.

Medical Terminology

Medical terminology is a specialized language used by healthcare professionals to describe the human body, its functions, and medical conditions. Familiarity with terms like 'pollex' helps in accurately interpreting medical diagnoses and understanding the specific nature of injuries.

Watch next

Master Overview of the Arm and Forearm with a bite sized video explanation from Bruce Bryan

Start learning

Related Videos

Related Practice

Textbook Question

Which bone of the arm corresponds to the femur of the leg?

a. Ulna

b. Humerus

c. Radius

d. Tibia

e. Fibula

The point of the elbow is actually the _____ of the ulna.

(a) Styloid process

(b) Olecranon

(d) Trochlear notch

The bones of the hand articulate distally with the:

(a) Carpal bones

(b) Ulna and radius

(d) Phalanges

280

views

Textbook Question

At the glenoid cavity, the scapula articulates with the proximal end of the (a) humerus, (b) radius, (c) ulna, (d) femur.

464

views

Multiple Choice

Which of the following bones are part of the upper limb?

views

Multiple Choice

Which of these bones is part of the upper limb?

views

Multiple Choice

Of the two bones in the forearm, which bone is medial?

When a person falls, a common reaction is to try to catch themselves by sticking out their hands. This will sometimes lead to a fracture in one or both of the bones of the forearm. Because one forearm bone is larger where it articulates with the wrist, this bone tends to absorb more force from the impact and is broken more often, making it the most commonly broken bone in the body. Where would such a break likely occur?