Which hormone inhibits bone growth?
A. Calcitonin
B. Estrogen and testosterone
C. Thyroid hormone
D. Parathyroid hormone
E. Growth hormone
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Question 2) To trigger bone growth, growth hormone stimulates the
A. liver to produce somatomedin.
B. liver to produce calcitonin.
C. brain to produce serotonin.
D. parathyroid to produce parathyroid hormone.
E. thyroid to produce calcitriol.
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Question 3) Which vitamin is required for the normal synthesis of collagen?
A. Vitamin D
B. Vitamin B
C. Vitamin A
D. Vitamin C
E. Vitamin K
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Question 4) Glucocorticoids increase bone ________; high levels of serotonin lead to _____ bone density.
A. formation; high
B. formation; low
C. loss; high
D. loss; low
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Question 5) A fracture parallel to the long axis of the bone is a(n) _________ fracture.
A. transverse
B. oblique
C. linear
D. comminuted
E. medial
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Question 6) The break of a bone that has been weakened by disease is a ________fracture; when a broken end of the bone pierces the skin, the fracture is ________.
A. stress; greenstick
B. epiphyseal; stress
C. greenstick; simple
D. pathologic; compound
E. pathologic, simple.
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Question 7) Calcitriol stimulates absorption of calcium in the small intestine.
Indicate whether this statement is true or false.
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Question 8) Rickets, a disease characterized by overproduction and deficient calcification of osteoid tissue, is caused by a lack of sufficient
A. Vitamin D.
B. Calcitonin.
C. Thyroid hormone.
D. Vitamin A.
E. Vitamin C.
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Question 9) What explains the dramatic acceleration in lengthwise bone growth at puberty?
A. Increased activity of osteoclasts occurs in response to parathyroid hormone stimulation.
B. Increased rate of calcium deposition occurs due to high blood calcium levels.
C. Increased physical activity causes lengthwise growth in response to bone stress.
D. Increased secretion of sex hormones promotes epiphyseal plate growth.
E. Increased absorption of dietary vitamins and minerals strengthens the matrix.
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Question 10) Bone growth in which the bone increases in diameter is called
A. interstitial growth.
B. epiphyseal growth.
C. appositional growth.
D. endosteal growth.
E. cancellous bone growth.
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