Skip to main content
Pearson+ LogoPearson+ Logo
Back

Microscopic Anatomy of Bones - Bone Cells quiz #1

Control buttons has been changed to "navigation" mode.
1/10
  • What are the four main types of bone cells, and what are their primary functions in bone tissue?
    The four main types of bone cells are osteoprogenitor cells (bone stem cells that develop into osteoblasts), osteoblasts (cells that build new bone matrix by secreting collagen and enzymes for hydroxyapatite formation), osteocytes (mature bone cells that maintain the matrix and monitor bone stress), and osteoclasts (multinucleated cells that break down bone matrix for remodeling and calcium regulation).
  • How do osteoblasts contribute to bone formation, and what happens to them after they secrete bone matrix?
    Osteoblasts build new bone by secreting collagen and enzymes that help form hydroxyapatite crystals, making bone hard. After secreting matrix, some osteoblasts become embedded in it and mature into osteocytes, while others may become inactive until needed again.
  • Describe the role and structure of osteocytes within bone tissue.
    Osteocytes are mature bone cells that reside in small chambers called lacunae. They maintain the bone matrix, monitor bone stress, and help regulate calcium. Osteocytes have long projections that extend through canaliculi, allowing them to exchange nutrients and communicate with other bone cells.
  • What is the origin and function of osteoclasts in bone remodeling?
    Osteoclasts originate from white blood cells and are large, multinucleated cells. They break down bone matrix by secreting acids and enzymes, facilitating bone resorption and remodeling, which is important for bone maintenance, growth, and calcium homeostasis.
  • Explain the process of bone remodeling and the roles of osteoblasts and osteoclasts in this process.
    Bone remodeling is a continuous process where osteoclasts break down old or damaged bone matrix, and osteoblasts build new matrix in its place. This process maintains bone strength, adapts bone to stress, and helps regulate calcium levels in the body.
  • What are the four main types of bone cells found in bone tissue, and what is the primary function of each?
    The four main bone cells are osteoprogenitor cells (bone stem cells that develop into osteoblasts), osteoblasts (build new bone matrix), osteocytes (maintain and monitor bone matrix), and osteoclasts (break down bone matrix for remodeling and calcium regulation).
  • How do osteoblasts contribute to bone formation, and what happens to some osteoblasts after they secrete bone matrix?
    Osteoblasts build new bone by secreting collagen and enzymes that help form hydroxyapatite crystals. Some osteoblasts become embedded in the matrix and mature into osteocytes, while others may become inactive until needed again.
  • Describe the structure and role of osteocytes within bone tissue.
    Osteocytes are mature bone cells that live in small chambers called lacunae and have long projections through canaliculi for nutrient exchange and communication. They maintain the bone matrix, monitor bone stress, and help regulate calcium by signaling other bone cells.
  • What is the origin and function of osteoclasts in bone remodeling?
    Osteoclasts originate from white blood cells and are large, multinucleated cells. They break down bone matrix by secreting acids and enzymes, enabling bone resorption and remodeling for maintenance, growth, and calcium homeostasis.
  • Explain the process of bone remodeling and the roles of osteoblasts and osteoclasts in this process.
    Bone remodeling is a continuous process where osteoclasts break down old or damaged bone matrix and osteoblasts build new matrix in its place. This maintains bone strength, adapts bone to stress, and helps regulate calcium levels in the body.