Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 37, Problem 13RQ
When blood calcium levels are low, PTH stimulates:
- excretion of calcium from the kidneys
- excretion of calcium from the intestines
- osteoblasts
- osteoclasts.
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Students have asked these similar questions
Hypersecretion of parathyroid hormone will:
Group of answer choices
inhibit osteoclast activity
result in a faster rate of bone deposition
enhance renal reabsorption of calcium
inhibit of intestinal absorption of calcium
A patient has a tumor on the parathyroid that is increasing its hormone production. What effects might you see? (More than one answer may be correct)
Osteoporosis
Low circulating calcium levels
Hyperactivity of the muscles
Low blood pressure
Which of the following is false?
parathyroid hormone is produced by the parathyroid gland
parathyroid hormone increases urination of calcium
Oparathyroid hormone stimulates osteoclasts
parathyroid hormone increases calcium concentration in the blood
Chapter 37 Solutions
Biology 2e
Ch. 37 - Figure 37.5 Heat shock proteins (HSP) are so named...Ch. 37 - Figure 37.11 Pancreatic tumors may cause excess...Ch. 37 - Figure 37.14 Hyperthyroidism is a condition in...Ch. 37 - A newly discovered hormone contains four amino...Ch. 37 - Which class of hormones can diffuse through plasma...Ch. 37 - Why are steroids able to diffuse across the plasma...Ch. 37 - A new antagonist molecule has been discovered that...Ch. 37 - What effect will a cAMP inhibitor have on a...Ch. 37 - When insulin binds to its receptor, the complex is...Ch. 37 - Drinking alcoholic beverages causes an increase in...
Ch. 37 - FSH and LH release from the anterior pituitary is...Ch. 37 - What hormone is produced by beta cells of the...Ch. 37 - When blood calcium levels are low, PTH stimulates:...Ch. 37 - How would mutations that completely ablate the...Ch. 37 - A rise in blood glucose levels triggers release of...Ch. 37 - Which mechanism of hormonal stimulation would be...Ch. 37 - A scientist hypothesizes that the pancreas’s...Ch. 37 - Which endocrine glands are associated with the...Ch. 37 - Which of the following hormones is not produced by...Ch. 37 - Recent studies suggest that blue light exposure...Ch. 37 - Although there are many different hormones in the...Ch. 37 - Where is insulin stored, and why would it be...Ch. 37 - Glucagon is the peptide hormone that signals for...Ch. 37 - Name two important functions of hormone receptors.Ch. 37 - How can hormones mediate changes?Ch. 37 - Why is cAMP-mediated signal amplification not...Ch. 37 - Name and describe a function of one hormone...Ch. 37 - Describe one direct action of growth hormone (GH).Ch. 37 - Researchers have recently demonstrated that...Ch. 37 - How is hormone production and release primarily...Ch. 37 - Compare and contrast hormonal and humoral stimuli.Ch. 37 - Oral contraceptive pills work by delivering...Ch. 37 - What does aldosterone regulate, and how is it...Ch. 37 - The adrenal medulla contains two types of...Ch. 37 - How would damage to the posterior pituitary gland...
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- Calcitriol and parathyroid hormone are: synergistic hormones antagonistic hormonesarrow_forwardWhich of the following is a function of parathyroid hormone? (Select ALL correct answers) Promotes secretion of calcium in kidneys Promotes release of calcium stored in bones Decreases absorption of dietary calcium Promotes reabsorption of calcium in kidneysarrow_forwardHypocalcemia, or low levels of calcium, may result in brittle nails, broken bones, muscle cramps, mental confusion, and seizures.Select the FOUR actions below that would help the body to maintain homeostasis if blood calcium levels are low. Low levels of blood calcium are detected by thyroid gland. Low levels of blood calcium are detected by parathyroid gland. Parathyroid hormone is released. Calcitonin is released. Bone is broken down to release calcium. Muscle is broken down to release calcium. Calcium uptake by the kidneys and intestines increases. Calcium uptake by the kidneys and intestines decreases.arrow_forward
- Explain how you would interpret the graph in Figure to show that PTH and calcitonin act in a complementary way to control blood calcium level.arrow_forwardWhy does the release of cortisol during the stress response have a negative effect on bone density? Cortisol increases serum calcium to fuel muscle contraction during the fight or flight responseCortisol reduces estrogen production and triggers early menopause Cortisol draws calcium out of the bones to increase serum calcium to fuel muscle contraction during the fight or flight response Cortisol decreases calcium to fuel muscle contraction during the fight or flight responsearrow_forwardSelect ALL the statements that are correct. Growth hormone production is inhibited by somatostatin. Growth hormone production is stimulated by the release of the tropic hormone GHRH in the hypothalamus. Growth hormone production is inhibited by IGF-1 which is secreted by the liver. Gigantism and acromegaly differ in that gigantism is due to oversecretion of GHRH, not GH.arrow_forward
- Describe the structural characteristics and function of the parathyroid glands. Describe the particular the role of PTH in calcium homeostasis. Describe the role of calcitonin on calcium homeostasisarrow_forwardHow does Parathyroid Hormone elevate blood calcium levels? by increasing the amount of CA2+ removed from the blood by the kidneys by decreasing the amount of CA2+ absorbed from the gut into the blood by increasing the number and activity of osteoclasts by increasing the number and activity of osteoblastsarrow_forwardWhen the body calcium is low, PTH is secreted by the parathyroid glands which will increase levels of ________________________. 25 (OH)2D2 1,25 (OH)2D3 1 (OH)2D3 1,25 (OH)2Darrow_forward
- Select the numbers of the descriptors below that correctly describe the hormone thyroxine Produced in the parathyroid gland Produced in the thyroid gland Increases the rate of fat, protein, and carbohydrate metabolism Increases the rate of calcium ion absorption Controlled by positive feedback Controlled by negative feedback Insufficiency results in fatigue and weight gain Insufficiency results in excess energy and weight loss Acsending Orderarrow_forwardWhich hormone stimulates the activation of Vitamin D in the kidneys? Calcitonin Parathyroid hormone Insulin Glucagonarrow_forwardState the effects of thyroid hormones on growth.arrow_forward
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