Textbook Question
The part of the epiphysis that does not ossify during a person's lifetime is the:
a. Articular surface
b. Secondary ossification center
c. Diaphyseal notch
d. Nutrient foramen
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Ch. 6 Bones and Bone Tissue
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 6, Problem 8
Of the following statements, identify those that are properties of intramembranous ossification, endochondral ossification, or both.
a. The bone is formed via a hyaline cartilage model.
b. Bone tissue forms from ossification centers.
c. Bone forms from within a mesenchyme membrane.
d. The early spongy bone is formed, after which the early compact bone develops.
e. The original primary bone is replaced with secondary bone.
f. A bone collar forms, followed by the early spongy bone.
Verified step by step guidance1
Step 1: Understand the two processes of bone formation: Intramembranous ossification and Endochondral ossification. Intramembranous ossification occurs directly within a mesenchymal membrane, while endochondral ossification involves a hyaline cartilage model that is replaced by bone tissue.
Step 2: Analyze each statement and determine whether it applies to intramembranous ossification, endochondral ossification, or both. For example, statement (a) mentions a hyaline cartilage model, which is a hallmark of endochondral ossification.
Step 3: For statement (b), recognize that ossification centers are present in both processes. In intramembranous ossification, ossification centers form within the mesenchymal membrane, while in endochondral ossification, they form within the cartilage model.
Step 4: For statement (c), note that bone forming from a mesenchyme membrane is specific to intramembranous ossification, as this process does not involve a cartilage model.
Step 5: For statements (d), (e), and (f), identify the features that are shared by both processes. For example, the formation of early spongy bone followed by compact bone (d) and the replacement of primary bone with secondary bone (e) are common to both processes, while the formation of a bone collar (f) is specific to endochondral ossification.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Intramembranous Ossification
Intramembranous ossification is a process where bone develops directly from mesenchymal tissue without a cartilage model. This type of ossification primarily occurs in the formation of flat bones, such as the skull and clavicle. The process involves the aggregation of mesenchymal cells that differentiate into osteoblasts, which then secrete bone matrix, leading to the formation of bone tissue.
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Structural Class: Cartilaginous Joints Example 1
Endochondral Ossification
Endochondral ossification is the process by which bone tissue is created through a cartilage model. This method is essential for the formation of long bones, such as the femur and humerus. In this process, hyaline cartilage serves as a precursor, which is gradually replaced by bone tissue as the cartilage is resorbed and ossification centers develop.
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Bone Development and Remodeling
Bone development and remodeling involve the transformation of primary bone into secondary bone, which is denser and more organized. This process includes the formation of spongy bone followed by compact bone, and it is crucial for maintaining bone strength and integrity throughout life. Understanding these processes helps in identifying the characteristics of both intramembranous and endochondral ossification.
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Related Practice
Textbook Question
What is the difference between a primary and secondary ossification center in a long bone?
Textbook Question
Which bones form via intramembranous ossification?
a. Irregular bones
b. Certain flat bones
c. Long bones
d. Short bones
e. More than one of the above
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Textbook Question
The subunit of compact bone is the _____ . It consists of rings of bone matrix called ______that surround a structure called the______ that contains blood vessels and nerves. Other structures called _______also contain blood vessels and nerves. Osteocytes are housed in_____and communicate via_______.
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Textbook Question
The branching pieces of bone in spongy bone are called:
a. Lamellae
b. Lacunae
c. Osteoclasts
d. Trabeculae
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Textbook Question
Long bones grow in length from the:
a. Diaphyseal line
b. Epiphyseal line
c. Epiphyseal plate
d. Medullary cavity
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