Which is not correct about spongy bone?
A. Its spaces hold red bone marrow.
B. It is located deep to compact bone.
C. It forms diploe in the cranial bones.
D. It is composed of tubular units called osteons.
E. It is located in the epiphyses of long bones.
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Question 2) Spongy bone
A. contains no osteocytes.
B. has spaces filled with yellow marrow.
C. is composed of tubular units called osteons.
D. forms diploe in the cranial bones.
E. All of the choices are correct.
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Question 3) Compact bone
A. is located deep to spongy bone in the diaphysis.
B. is composed of tubular units called osteons.
C. has a brace-like arrangement of trabeculae.
D. is avascular.
E. All of the choices are correct.
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Question 4) What gives bone its flexibility?
A. Inorganic salts
B. Yellow bone marrow
C. Collagen fibers
D. Trabeculae
E. Elastic fibers
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Question 5) Osteoid is the
A. organic part of the bone matrix that gives it rigidity.
B. organic part of the bone matrix that gives it tensile strength.
C. inorganic part of the bone matrix that gives it rigidity.
D. inorganic part of the bone matrix that gives it tensile strength.
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Question 6) Which affects osteoblast and osteoclast activity?
A. Gravity
B. Mechanical stress
C. Calcitonin and parathyroid hormone levels
D. Blood calcium level
E. All of the choices are correct.
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Question 7) As the bone matrix calcifies and the secreting cells become walled in,
A. osteoblasts become osteocytes.
B. osteogenic progenitors become osteoclasts.
C. osteoblasts become osteoclasts.
D. osteoclasts become osteocytes.
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Question 8) . Interstitial growth of cartilage increases its ______ and occurs in the _______ region of the cartilage.
A. length; internal
B. length; peripheral
C. width; internal
D. width; peripheral
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Question 9) What helps bone resist compression?
A. Yellow bone marrow
B. Reticular fibers
C. Inorganic salts
D. Red bone marrow
E. Endosteum
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Question 10) If a bone is immersed in a weak acid such as vinegar for several days, its inorganic components will dissolve. What will be the result of such an experiment?
A. The bone will dissolve completely.
B. The compact bone will dissolve, leaving only the inner spongy bone.
C. The bone will become extremely brittle.
D. The bone will become soft and bendable.
E. The spongy bone will dissolve, leaving only the outer compact bone.
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