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Ch. 6 Bones and Skeletal Tissues
Marieb - Human Anatomy & Physiology 11th Edition
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMarieb, Hoehn 11th EditionCh. 6 Bones and Skeletal TissuesProblema 7
Capitolo 6, Problema 7

Formation of the bony callus in fracture repair is followed by:
a. Hematoma formation
b. Fibrocartilaginous callus formation
c. Bone remodeling
d. Formation of granulation tissue

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Step 1: Understand the sequence of events in fracture repair. The process begins with hematoma formation, where blood clots form at the fracture site to stop bleeding and provide a foundation for healing.
Step 2: Next, fibrocartilaginous callus formation occurs, where a soft callus made of collagen and cartilage bridges the broken bone ends, stabilizing the fracture.
Step 3: After the soft callus, the bony callus forms. This is a hard callus made of spongy bone that replaces the fibrocartilaginous callus, providing stronger support.
Step 4: The step that follows the formation of the bony callus is bone remodeling. During remodeling, the spongy bone is gradually replaced by compact bone, restoring the bone's original shape and strength.
Step 5: Therefore, the correct answer is the process that comes after the bony callus formation, which is bone remodeling.

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Stages of Fracture Healing

Fracture healing occurs in a series of stages: hematoma formation, fibrocartilaginous callus formation, bony callus formation, and bone remodeling. Understanding the sequence helps identify what follows each stage during bone repair.
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Bony Callus Formation

The bony callus forms when osteoblasts replace the fibrocartilaginous callus with spongy bone, stabilizing the fracture. This stage bridges the broken bone ends and precedes the remodeling phase.
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Bone Remodeling

Bone remodeling is the final phase where the bony callus is reshaped into compact bone, restoring the bone's original structure and strength. This process can take several months to complete.
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a. Calcium homeostasis of the blood

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c. The electrical charge on bone surfaces

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Bone remodeling in adults is regulated and directed mainly by:

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