BIO 265 Mod 5 - Skeletal System Questions with Correct Answers
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Course
Bio 342
Institution
Bio 342
Functions of skeletal system Correct Answer Support, protection, red blood cell production, mineral and fat storage, movement
Osteocytes Correct Answer Mature bone cells surrounded by matrix
Canaliculi Correct Answer Small channels that radiate through the matrix of bone; connect lacunae w...
BIO 265 Mod 5 - Skeletal System Questions with
Correct Answers
Functions of skeletal system Correct Answer ✓✓ Support, protection,
red blood cell production, mineral and fat storage, movement
Osteocytes Correct Answer ✓✓ Mature bone cells surrounded by matrix
Canaliculi Correct Answer ✓✓ Small channels that radiate through the
matrix of bone; connect lacunae with each other and blood vessels
Bone matrix Correct Answer ✓✓ Fills in space between rows of
lacunae; made up of H2O, proteins, mineral salts, cells
Composition bone matrix Correct Answer ✓✓ 2/3 weight of bone is
calcium phosphate, 1/3 weight collagen fibers and proteins
Lamella Correct Answer ✓✓ Layers of bony matrix
Osteoblasts Correct Answer ✓✓ Matrix secreting cells; bone "builders";
grab calcium and phosphorous from blood; secrete osteoid; become
osteocytes
Osteoid Correct Answer ✓✓ the unmineralized, organic portion of bone
matrix that forms prior to the maturation of bone tissue
, Osteoprogenitor Cells Correct Answer ✓✓ Mesenchymal stem cells
found in endosteum and periosteum; can produce more stem cells or
osteoblasts
Osteoclasts Correct Answer ✓✓ a large multinucleate bone cell that
absorbs bone tissue during growth and healing; bone "chewers"; send
calcium and phosphorus into blood
Osteolysis Correct Answer ✓✓ The breakdown of the mineral matrix of
bone; destruction of bone
Osteon Correct Answer ✓✓ Units of compact bone made up of layers of
lamellae
Haversian Canal (Central Canal) Correct Answer ✓✓ Large middle
channel that contains blood vessels, nerves, and lymphatic vessels in
osteon; waste and nutrients
Compact bone Correct Answer ✓✓ Hard, dense bone tissue that is
beneath the outer membrane of a bone; made up of calcium phosphate
Spongy bone Correct Answer ✓✓ Many small spaces; thick and
branchy; trabeculae (parallel struts); along stress lines; osteocytes are
irregularly spaced; contains red bone marrow;
Ends of long bones, pelvis, ribs vertebrae, skull
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