Textbook Question
The tarsal bone that transfers and distributes weight to the heel or toes is the:
(a) Cuneiform
(b) Calcaneus
(c) Talus
(d) Navicular
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Ch. 8 The Appendicular Skeleton
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011
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Table of contents
- Ch. 1 An Introduction to Anatomy and Physiology25
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization29
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure33
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses15
- Ch. 18 The Endocrine System21
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation26
- Ch. 22 The Lymphatic System and Immunity25
- Ch. 23 The Respiratory System4
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes30
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance17
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011Not the one you use?Change textbook
Chapter 8, Problem 20
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 guidance1
Step 1: Understand the term 'pollex' by recalling anatomical terminology. The pollex is a specific part of the body, so identifying it correctly is key to answering the question.
Step 2: Recall that the pollex refers to the thumb, which is the first digit of the hand, distinct from fingers 2 through 5.
Step 3: Recognize that a dislocation involves a joint being forced out of its normal position, so Jack has injured the joint of his thumb.
Step 4: Review the answer choices and match the pollex to the correct body part. Since the pollex is the thumb, the correct choice corresponds to the thumb.
Step 5: Conclude that Jack injured his thumb, which is option (d), based on the anatomical definition of pollex.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Anatomical Terminology
Anatomical terminology refers to the standardized language used to describe parts of the body. Understanding terms like 'pollex' helps identify specific body parts accurately, which is essential in medical and biological contexts.
Recommended video:
Guided course
02:40
Anatomical Position
Pollex Definition
The pollex is the anatomical term for the thumb, the first digit of the hand. Recognizing this term allows one to pinpoint injuries or conditions related specifically to the thumb rather than other parts of the arm or hand.
Recommended video:
Guided course
02:35Anatomical Position Example 1
Dislocation Injury
A dislocation occurs when bones in a joint are forced out of their normal positions. Knowing what a dislocation entails helps understand the severity and nature of Jack's injury to his pollex (thumb).
Recommended video:
04:06Introduction to Joints Example 1
Related Practice
Textbook Question
Investigators find the pelvis of a human and are able to identify the sex, the relative age, and some physical characteristics of the person. How is this possible from only the pelvis?
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Textbook Question
The fibula:
(a) Forms an important part of the knee joint
(b) Articulates with the femur
(c) Helps to bear the weight of the body
(d) Provides lateral stability to the ankle
(e) Does a and b
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Textbook Question
While fireman Fred is fighting a fire in a building, part of the ceiling collapses, and a beam strikes him on his left shoulder. He is rescued, but has a great deal of pain in his shoulder. He cannot move his arm properly, especially in the anterior direction. His clavicle is not broken, and his humerus is intact. What is the probable nature of Fred’s injury?
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Textbook Question
Why would a self-defense instructor advise a student to strike an attacker’s clavicle?
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Textbook Question
Why is the tibia, but not the fibula, involved in the transfer of weight to the ankle and foot?
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