Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 2RC
Which of the following could cause premature closure of the epiphyseal cartilages?
(a) increased levels of sex hormones
(b) high levels of vitamin D3
(c) too little parathyroid hormone
(d) an excess of growth hormone
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Select the best answer or answers from the choices given: Parathyroid hormone (a) increases bone formation and lowers blood calcium levels, (b) increases calcium excretion from the body, (c) decreases calcium absorption from the gut, (d) demineralizes bone and raises blood calcium levels.
9) This cell is active once the matrix of bone calcifies. The cells sits in a lacunae.
a) osteoprogenitor cells b) osteoclasts (c) osteocytes d) osteoblasts e) chondroblasts
10) What are the extracellular fluid filled extensions of the lacunae called?
a) interosteonic (perforating) canals b) osteonic (Haversian) canals
d) canaliculi e) perforating (Sharpey's) fibers
c) concentric lamellae
11) Which two minerals are needed in large quantities when bones are growing?
a) calcium and chlorine
d) manganese and sulfur
b) magnesium and sulfur c) calcium and phosphorous
e) potassium and phosphorous
12) In endochondral ossification, what is the original source of osteoblasts?
a) endoderm (b) mesenchyme
e) ectoderm
c) mucus connective tissue (d) osteoprogenitor cells
Chapter 5 Solutions
Human Anatomy (9th Edition)
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- Growth hormone, or GH, is used medically to spur growth in children who are unusually short because they have a GH deficiency. However, it is useless for a short but otherwise normal 25-year-old to request GH treatment in order to grow taller. Why?arrow_forwardWhich of the following hormones is NOT important in calcium homeostasis? a.)Calcitonin b.)Parathyroid hormone c.)1,25-dihydroxy cholecalciferol d.)Glucagonarrow_forwardGrowth hormone is administered to people who have pituitary dwarfism. Parents wanting their normal children to be taller have requested the treatment for them. Do you think this is a wise request? Why or why not?arrow_forward
- What effect does calcitonin have on the calcium concentrations of bone? A. ) no effect on bone calcium B.) decreases bone calcium C.) stimulates bone osteoclasts D.) increases bone calciumarrow_forwardWhich of the following outcomes would be most likely to occur due to a vitamin K deficiency? Select one: a. Impaired collagen synthesis at epiphyseal growth plates b. Increased bone mineralization leading to large, deformed bones c. Impaired phosphorus uptake by osteoclasts d. Impaired calcitonin production by thyroid gland e. Impaired Ca2+ uptake by osteoblastsarrow_forward_____1_____ is the hormone produced by the parathyroid gland that causes bone resorption; ______2______ is the hormone produced by the parathyroid gland that increases deposition of bone matrix.A: 1) Calcitonin ; 2) PTHB: 1) Calcitonin ; 2) EstrogenD: 1) PTH ; 2) CalcitoninE: 1) PTH ; 2) CholecalciferolF: 1) RANK-L ; 2) OPGarrow_forward
- Bone deposition (formation) occurs where bone is injured or added strength is needed. During this time, there will e the most abundant levels of which bone cells? a) Osteoclasts b) Osteoblasts c) Chondrocytesarrow_forwardSelect the best answer or answers from the choices given: Where within the epiphyseal plate are the dividing cartilage cells located? (a) between the calcification zone and the ossification zone, (b) between the hypertrophic zone and the calcification zone, (c) between the resting zone and the hypertrophic zone, (d) in the primary ossification center.arrow_forwardWhich hormone is responsible for gigantism and acromegaly?arrow_forward
- we use the term "acromial region" in order to ........arrow_forwarda) Describe age-associated changes in human bone and their consequences in terms of physiological function b) Discuss how keeping physically active may help to maintain physiological function in human bone during the ageing processarrow_forwardWhich of the following best describes the fetal development of new long bone from cartiage? A) The epiphyseal line is calcified B) Fibroblasts replace trabeculae C) Lamellar bone is converted into woven bone D) Metaphyseal chondrocytes are calcified E) Osteoclasts replace cartilagearrow_forward
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