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Ch. 6 Bones and Bone Tissue
Amerman - Human Anatomy & Physiology 2nd Edition
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoAmerman 2nd EditionCh. 6 Bones and Bone TissueProblema 4f
Capitolo 6, Problema 4f

Mark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.


f. Osteocytes are mature and less active osteoblasts that have become surrounded by bone ECM.

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1
Understand the key terms in the statement: Osteocytes, osteoblasts, and bone ECM (extracellular matrix). Osteocytes are mature bone cells, osteoblasts are bone-forming cells, and ECM is the non-cellular component of bone tissue that provides structural support.
Analyze the statement: 'Osteocytes are mature and less active osteoblasts that have become surrounded by bone ECM.' This suggests that osteocytes originate from osteoblasts and are embedded in the bone matrix.
Recall the process of osteocyte formation: Osteoblasts secrete bone ECM during bone formation. Once they become completely surrounded by the ECM, they differentiate into osteocytes, which are less metabolically active but maintain the bone tissue.
Determine if the statement is true or false: Based on the definition and process, the statement is true because osteocytes are indeed mature osteoblasts that have become surrounded by bone ECM.
If the statement were false, the correction would involve clarifying the relationship between osteoblasts and osteocytes, ensuring the explanation aligns with the process of bone tissue development.

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Osteocytes

Osteocytes are mature bone cells that originate from osteoblasts, which are responsible for bone formation. Once osteoblasts become embedded in the bone matrix they secrete, they differentiate into osteocytes. These cells play a crucial role in maintaining bone tissue and communicating with other bone cells to regulate bone remodeling.
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Osteocytes

Bone Extracellular Matrix (ECM)

The bone extracellular matrix (ECM) is a complex network of proteins and minerals that provides structural support to bone tissue. It consists mainly of collagen fibers and hydroxyapatite, which give bone its strength and rigidity. The ECM is essential for the function of osteocytes, as it surrounds them and facilitates their communication and nutrient exchange.
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Bone Matrix

Osteoblasts

Osteoblasts are specialized cells responsible for the synthesis and mineralization of bone tissue. They produce the bone matrix and are crucial for bone growth and repair. When osteoblasts become trapped in the matrix they create, they transform into osteocytes, thus playing a vital role in the lifecycle of bone cells.
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Osteoclasts
Pratica correlata
Domanda del libro di testo

Mark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.


e. Osteoblasts are responsible for bone resorption, and osteoclasts are responsible for bone deposition.

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Domanda del libro di testo

Mark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.


c. Collagen fibers are one of the predominant parts of the inorganic matrix.

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Domanda del libro di testo

Mark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.


d. The collagen fibers of bone help it to resist torsion and tension.

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Domanda del libro di testo

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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Domanda del libro di testo

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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Domanda del libro di testo

The branching pieces of bone in spongy bone are called:


a. Lamellae

b. Lacunae

c. Osteoclasts

d. Trabeculae

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