EBK ESSENTIALS OF HUMAN ANATOMY & PHYSI
12th Edition
ISBN: 8220103633604
Author: KELLER
Publisher: PEARSON
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Chapter 1, Problem 19CT
Parathyroid hormone (PTH) is secreted in response to a drop in the calcium level in the blood. The secretion of PTH is regulated by a negative feedback mechanism. What can you expect to happen to the calcium blood level as increased amounts of PTH are secreted, and why?
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Chapter 1 Solutions
EBK ESSENTIALS OF HUMAN ANATOMY & PHYSI
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - More than one choice may apply. Using the terms...Ch. 1 - Match the proper anatomical term (column B) with...Ch. 1 - Anatomical terms that apply to the backside of the...Ch. 1 - A neurosurgeon orders a spinal tap for a patient....Ch. 1 -
7. Which of the following groupings of the...Ch. 1 - Which of the following is (are) involved in...Ch. 1 - Define anatomy and physiology.Ch. 1 - List the 11 organ systems of the body, briefly...
Ch. 1 - Many body structures are symmetrical. Are the...Ch. 1 - 12. On what body surface is each of the following...Ch. 1 - 13. Which of the following organ...Ch. 1 - Explain the meaning of bomeostasis as applied to...Ch. 1 - 15. What is the consequence of loss of...Ch. 1 - 16. A nurse informed John that she was about to...Ch. 1 - Jennifer fell off her motorcycle and tore a nerve...Ch. 1 - Mr. Garica is behaving abnormally and doctors...Ch. 1 - 19. Parathyroid hormone (PTH) is secreted in...Ch. 1 - 20. Mr. Harvey, a computer programmer, has been...Ch. 1 - Prob. 21CTCh. 1 - Prob. 22CTCh. 1 - 23. How is the concept of homeostasis (or its...
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- King 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_forwardTake thyroid hormones as an example of hormones and their properties. Thyroid hormone is highly bound to proteins in the blood. What is the benefit of such protein binding? What effect does protein binding have on the activity of the hormone? Name a gland other than the thyroid gland that is involved in regulating thyroid hormone production?arrow_forwardThe hormone thyroxine is given as an oral dose, but insulin needs to be injected into the body. Why?arrow_forward
- hGH stimulates the liver to excrete growth factors. In combination with each other, hGH and growth factors affect many body processes.One role of hGH is to metabolize fats. Another hormone in the body that has a similar role to hGH and the gland that secretes that hormone are respectively: Select one: a. Hormone Gland Parathyroid hormone Thyroid gland b. Hormone Gland Thyroxine Thyroid gland c. Hormone Gland Parathyroid hormone Parathyroid gland d. Hormone Gland Thyroxine Parathyroid glandarrow_forwardChronic stress or GC exposure can cause insulin resistance. The influence of GC on insulin is complex, but leads to hyperinsulinemia (high circulating insulin levels) and insulin resistance. Insulin resistance is typically caused by a decreased number of insulin receptors on the cell surface. Speculate on a mechanism resulting in a decreased number of insulin receptors.arrow_forwardMany functions in the body are controlled by hormones – chemical signals that are secreted by one organ or tissue, but have effects in multiple areas. Calcium can enter the body from what we eat and drink. It circulates through blood and is used by many organs, so it’s level is carefully regulated. The amount of calcium in the blood is maintained at a relatively constant level by two hormones; for our purposes, we’ll just call them hormone A and hormone B. Hormone A is secreted by the parathyroid gland and it functions to increase blood calcium levels. Hormone B is secreted by parafollicular cells (C cells) in the thyroid gland and it functions to decrease blood calcium levels. Calvin, a teenage boy, begins eating ChocoRite™ Calcium Bites, a very tasty calcium supplement. He likes them so much that he ends up eating a whole package one afternoon. 1.Where does hormone B come from? A)From the calcium regulatory cells B)From the parathyroid gland C)From calcium supplements,…arrow_forward
- A common test of thyroid gland function is to measure the amount of thyroid-stimulating hormone circulating in the blood. What would you hypothesize is wrong in a person who has an abnormally high level of TSH?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_forwardA woman affected by type 1 (insulin-dependent) diabetes miscalculates and injects herself with too much insulin. She soon begins to feel confused and sluggish. She calls for medical assistance and injects herself with the glucagon her doctor prescribed for such an emergency. When an ambulance arrives, she is given dextrose (a sugar) intravenously. How did the excess insulin cause her symptoms? How did the glucagon injection and the intravenous sugar help reverse them?arrow_forward
- A tumour on the parathyroid glands will result in excessive production of parathyroid hormone (PTH) called hyperparathyroidism. PTH has a significant role in calcium homeostasis. Hyperparathyroidism will result in all the following EXCEPT Select one: a. the increase in blood calcium levels b. the breakdown of bones and teeth to release calcium into the blood c. the deposition of calcium into bones and teeth, making them strong and healthy d. the increase in absorption of calcium ions by kidney nephrons, leading to kidney stonesarrow_forwardFeedback loops regulate the release of hormones in either a positive or negative loop. Consider this example: The hypothalamus releases thyrotropin releasing hormone (TRH), which stimulates the pituitary to release the TSH (thyroid stimulating hormone). TSH then stimulates thyroid gland to release thyroid hormone. When elevated levels of thyroid hormone are detected by the hypothalamus and pituitary further release of TRH and TSH is suppressed. b. What would happen to the levels of TRH and TSH if a tumor of the thyroid gland were discovered resulting in uncontrolled release of the thyroid hormone from the tumor itself? * Your answer (LENGHT DOESN'T MATTER, I NEED IT ASASP PLEASE)arrow_forwardWhich of the following is most likely to be releasedwhen blood calcium levels are elevated?a. thyroxineb. calcitoninc. parathyroid hormoned. vitamin Darrow_forward
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