Human Anatomy (8th Edition) - Standalone book
8th Edition
ISBN: 9780321883322
Author: Frederic H. Martini, Robert B. Tallitsch
Publisher: PEARSON
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Chapter 5, Problem 5RFT
Summary Introduction
Introduction:
Normal bone growth depends on a number of factors. These factors promote bone growth, especially during the time of puberty. Sex hormone also plays an important role in the bone production.
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Richard had symptoms of excessive secretion of PTH (high blood calcium levels), and his physicians were certain he had a parathyroid gland tumor. Yet when surgery was performed on his neck, the surgeon could not find the parathyroid glands at all. Where should the surgeon look next to find the tumorous parathyroid gland?
3) Parathyroid hormone:
a) is secreted when blood calcium levels are too high.
b) is required for the synthesis of collagen fibers.
c) stimulates osteoclasts to break down bone tissue.
d) stimulates cells in the epiphyseal plate to divide.
Dwarfism, gigantism, acromegaly are associated with which hormone ................
Chapter 5 Solutions
Human Anatomy (8th Edition) - Standalone book
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- Two substances regulated by parathyroid hormone.arrow_forwardOsteoclast activity decreases a) Growth hormone (GH) b) Calcitonin c) Sex steroids d) Parathormone (PTH)arrow_forwardWhich of the following hormones are released when blood calcium levels fall? Question 97 options: a) Calcitonin b) Thyroxin c) Hydroxyapatite d) Parathyroid hormonearrow_forward
- 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.arrow_forwardKing Egbert VI is falling ill. His calcium concentration is dropping to dangerously low levels. Parathyroid hormone (PTH) is released and blood calcium levels begin to rise. Shortly after, PTH release slows. Is this an example of a positive or negative feedback mechanism and what is the initial stimulus? a) Positive feedback; reduced PTH b) Negative feedback; increase PTH release c) Positive feedback; decline in calcium release d) Negative feedback; low calcium e) Negative feedback; reduced PTHarrow_forwardWhich hormone is responsible for gigantism and acromegaly?arrow_forward
- Growth 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_____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_forwardOsteoblasts have abundant receptors for what two hormones? Why?arrow_forward
- The conditions of gigantism and pituitary dwarfism are extreme opposite conditions of adult height. What is the effect of growth hormone on each condition?arrow_forwardGraves’ disease is an autoimmune disease in which the thyroid is overactive, producing an excessive amount of thyroid hormones. Some of the symptoms are heart palpitations and hand tremors. Which system is impacted by the altered calcium levels in Graves’ disease?arrow_forwardWhich hormone(s) act(s) to raise serum calcium levels?arrow_forward
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