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The ischium is the anterior part of the hip bone.

A) True
B) False

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Endochondral ossification ________, whereas intramembranous ossification ________.


A) replaces hyaline cartilage; replaces undifferentiated connective tissue
B) forms bone in broad, flat areas of the skull; occurs in the limbs
C) inhibits osteoblast activity; activates osteoclast activity
D) activates osteoclasts; inhibits osteoblast activity

E) A) and C)
F) B) and C)

Correct Answer

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The parietal bones meet each other along the sagittal suture.

A) True
B) False

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Which one of the following is true?


A) Osteoblasts are large, multinucleated cells that break down calcified bone matrix.
B) Osteoblasts deposit bone matrix around themselves and become osteocytes when they are isolated in lacunae.
C) Osteoclasts secrete bone matrix and become osteoblasts.
D) Osteoclasts deposit bone matrix around themselves and become osteocytes when they are isolated in lacunae.

E) A) and B)
F) A) and C)

Correct Answer

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At what age are nearly all bones completely ossified?


A) Birth
B) 5 years
C) 15 years
D) 25 years

E) A) and B)
F) None of the above

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Which of the following does not describe the function(s) of the skeletal system?


A) It interacts with muscles, providing movement.
B) It stores inorganic salts.
C) It protects organs, especially in the head and thorax.
D) It generates the movements of the limbs.

E) A) and B)
F) C) and D)

Correct Answer

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In a child, a vitamin D deficiency results in ________, whereas a vitamin A deficiency results in ________.


A) pituitary dwarfism; rickets
B) rickets; retardation of bone development
C) excess calcium absorption; osteomalacia
D) soft bones; rickets

E) A) and B)
F) B) and D)

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The deltoid tuberosity is part of the humerus.

A) True
B) False

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Having extra digits is termed


A) polydactyly.
B) polyuria.
C) polyploidy.
D) polydipsia.

E) A) and B)
F) A) and C)

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One of your friend's femurs is abnormally short and curved. When asked about it, they tell you that when they were very young, they fell from a tree and fractured the femur at the distal end. Their pediatrician urged the parents to allow your friend to receive surgery for the fracture, but they refused. What most likely happened to result in the abnormal femur?


A) Lack of physical therapy caused the muscles of the leg to not heal correctly, inhibiting bone growth.
B) Because the epiphyseal plate was not repaired, any subsequent growth in the bone was stunted and abnormal.
C) The hematoma stage of the fracture never filled in with fibrocartilage, which caused the bone to never heal properly.
D) Because he was young, the femur healed so rapidly that it grew incorrectly and no medical intervention prevented this from occurring.

E) All of the above
F) A) and B)

Correct Answer

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Eighty-year-old Evelyn takes a bisphosphonate drug once a month to keep her bones strong. She most likely has


A) polydactyly.
B) osteogenesis imperfecta.
C) osteoporosis.
D) a hematoma.

E) A) and B)
F) C) and D)

Correct Answer

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The calcaneus bone of the foot is an example of a(n)


A) long bone.
B) flat bone.
C) short bone.
D) irregular bone.

E) None of the above
F) A) and B)

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An "open book" fracture occurs when blunt force trauma causes the two pubis bones of the pelvic girdle to separate, opening the entire girdle from the front like a book. The section of the pelvic girdle that would be broken in this injury is the pubic symphysis.

A) True
B) False

Correct Answer

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Blood cell formation is called osteogenesis.

A) True
B) False

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The femur extends from the knee to the foot.

A) True
B) False

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Kyphosis is an excess curvature in the thoracic part of the vertebral column.

A) True
B) False

Correct Answer

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The zygomatic bone is an example of a(n)


A) long bone.
B) flat bone.
C) short bone.
D) irregular bone.

E) All of the above
F) A) and D)

Correct Answer

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Anemia could prompt the conversion of yellow marrow into red marrow.

A) True
B) False

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Most people have 24 ribs.

A) True
B) False

Correct Answer

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The acetabulum is


A) a depression in the hip bone that receives the head of the femur.
B) a protuberance in the hip bone that attaches to the head of the femur.
C) the prominence of the hip.
D) the anterior portion of the hip bone.

E) A) and B)
F) C) and D)

Correct Answer

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