Textbook Question
Compare the amount of movement possible in synarthrotic, amphiarthrotic, and diarthrotic joints. Relate these terms to the structural classification of joints—that is, to fibrous, cartilaginous, and synovial joints.
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Ch. 5 The Skeletal System
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340
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Table of contents
- Ch. 1 The Human Body: An Orientation23
- Ch. 2 Basic Chemistry22
- Ch. 3 Cells and Tissues20
- Ch. 4 Skin and Body Membranes13
- Ch. 5 The Skeletal System38
- Ch. 6 The Muscular System26
- Ch. 7 The Nervous System26
- Ch. 8 Special Senses12
- Ch. 9 The Endocrine System24
- Ch. 10 Blood22
- Ch. 11 Cardiovascular System29
- Ch. 12 The Lymphatic System and Body Defenses21
- Ch. 13 The Respiratory System7
- Ch. 14 The Digestive System and Body Metabolism13
- Ch. 15 The Urinary System23
- Ch. 16 The Reproductive System15
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340Not the one you use?Change textbook
Chapter 5, Problem 19
What bones make up each hip bone (coxal bone)? Which of these is the largest?
Which has tuberosities that we sit on?
Which is the most anterior?
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The hip bone, also known as the coxal bone, is composed of three fused bones: the ilium, ischium, and pubis. These bones fuse during development to form a single structure.
The ilium is the largest of the three bones. It forms the superior portion of the hip bone and includes the iliac crest, which can be felt along the upper edge of the pelvis.
The ischium is the bone that has tuberosities, specifically the ischial tuberosities. These are the bony prominences that bear weight when sitting down.
The pubis is the most anterior of the three bones. It forms the front portion of the hip bone and connects to the opposite pubis bone at the pubic symphysis, a cartilaginous joint.
Together, these three bones contribute to the structure of the pelvis, providing support for the body and attachment points for muscles and ligaments.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Coxal Bone Anatomy
The coxal bone, also known as the hip bone, is composed of three fused bones: the ilium, ischium, and pubis. Each of these bones contributes to the overall structure and function of the hip joint, providing support and facilitating movement. Understanding the anatomy of these bones is essential for identifying their specific features and roles.
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Ilium, Ischium, and Pubis
The ilium is the largest part of the coxal bone, forming the upper portion and providing a broad surface for muscle attachment. The ischium is located at the lower back part of the hip bone and features the ischial tuberosities, which are the bony prominences we sit on. The pubis is the most anterior part of the coxal bone, contributing to the pelvic girdle's stability and structure.
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Pelvic Structure and Function
The pelvic structure is crucial for weight-bearing and locomotion, as it connects the spine to the lower limbs. The arrangement of the ilium, ischium, and pubis allows for a stable base for the body while also accommodating the passage of nerves and blood vessels. Understanding the functional aspects of these bones helps in recognizing their importance in both movement and support.
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Related Practice
Textbook Question
Name two ways in which the fetal skull differs from the adult skull. A certain short-day plant flowers only when days are less than 12 hours long. Which of the following would cause it to flower?
a. A 9-hour night and 15-hour day with 1 minute of darkness after 7 hours
b. An 8-hour day and 16-hour night with a flash of white light after 8 hours
c. A 13-hour night and 11-hour day with 1 minute of darkness after 6 hours
d. A 12-hour day and 12-hour night with a flash of red light after 6 hours
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Textbook Question
Deborah, a 75-year-old woman, stumbled slightly while walking, then felt a terrible pain in her left hip. At the hospital, X-ray images revealed that the hip was broken. Also, the compact bone and spongy bone throughout her spine were very thin. What was her probable condition?
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Textbook Question
Name all the bones with which the ulna articulates.
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Textbook Question
At work, a box fell from a shelf onto Ella's acromial region. In the emergency room, the physician felt that the head of her humerus had moved into the axilla. What had happened to Ella?
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Textbook Question
Name the bones of the shoulder girdle.
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