Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 17, Problem 19RQ
When blood calcium levels are low, PTH stimulates ________.
- urinary excretion of calcium by the kidneys
- a reduction in calcium absorption from the intestines
- the activity of osteoblasts
- the activity of osteoclasts
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Which of these is not an effect of PTH?a. rise in blood phosphate levelb. reduction of calcium excretionc. increased intestinal calcium absorptiond. increased number of osteoclastse. increased calcitriol synthesis
When 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)2D
When blood calcium levels are low, PTH stimulates: a. excretion of calcium from the kidneys. b. excretion of calcium from the intestines. c. osteoblasts. d. osteoclasts.
Chapter 17 Solutions
Anatomy & Physiology
Ch. 17 - Visit this link...Ch. 17 - Visit this link...Ch. 17 - Visit this link...Ch. 17 - Visit this link...Ch. 17 - Visit this link...Ch. 17 - Endocrine glands ________. secrete hormones that...Ch. 17 - Chemical signaling that affects neighboring cells...Ch. 17 - A newly developed pesticide has been observed to...Ch. 17 - A small molecule binds to a G protein, preventing...Ch. 17 - A student is in a car accident, and although not...
Ch. 17 - The hypothalamus is functionally and anatomically...Ch. 17 - Which of the following is an anterior pituitary...Ch. 17 - How many hormones are produced by the posterior...Ch. 17 - Which of the following hormones contributes to the...Ch. 17 - Which of the following statements about the...Ch. 17 - The secretion of thyroid hormones is controlled by...Ch. 17 - The development of a goiter indicates that...Ch. 17 - Iodide ions cross from the bloodstream into...Ch. 17 - When blood calcium levels are low, PTH stimulates...Ch. 17 - Which of the following can result from...Ch. 17 - The adrenal glands are attached superiorly to...Ch. 17 - What secretory cell type is found in the adrenal...Ch. 17 - Cushings disease is a disorder caused by ________....Ch. 17 - Which of the following responses s not part of the...Ch. 17 - What cells secrete melatonin? melanocytes...Ch. 17 - The production of melatonin is inhibited by...Ch. 17 - The gonads produce what class of hormones? amine...Ch. 17 - The production of FSH by the anterior pituitary is...Ch. 17 - The function of the placental hormone human...Ch. 17 - If an autoimmune disorder targets the alpha cells,...Ch. 17 - Which of the following statements about insulin is...Ch. 17 - The walls of the atria produce which hoimone?...Ch. 17 - The end result of the RAAS is to ________. reduce...Ch. 17 - Athletes may take synthetic EPO to boost their...Ch. 17 - Hormones produced by the thymus play a role in the...Ch. 17 - The anterior pituitary gland develops from which...Ch. 17 - In the elderly, decreased thyroid function causes...Ch. 17 - Describe several main differences in the...Ch. 17 - Compare and contrast endocrine and exocrine...Ch. 17 - True or false: Neurotransmitters are a special...Ch. 17 - Compare and contrast the signaling events involved...Ch. 17 - Describe the mechanism of hormone response...Ch. 17 - Compare and contrast the anatomical relationship...Ch. 17 - Name the target tissues for prolactin.Ch. 17 - Explain why maternal iodine deficiency might lead...Ch. 17 - Define hyperthyroidism and explain why one of its...Ch. 17 - Describe the role of negative feedback in the...Ch. 17 - Explain why someone with a parathyroid gland tumor...Ch. 17 - What are the three regions of the adrenal cortex...Ch. 17 - If innervation to the adrenal medulla were...Ch. 17 - Compare and contrast the short-term and long-term...Ch. 17 - Seasonal affective disorder (SAD) is a mood...Ch. 17 - Retinitis pigmentosa (RP) is a disease that causes...Ch. 17 - Compare and contrast the role of estrogens and...Ch. 17 - Describe the role of placental secretion of...Ch. 17 - What would be the physiological consequence of a...Ch. 17 - Why is foot care extremely important for people...Ch. 17 - Summarize the role of GI tract hormones following...Ch. 17 - Compare and contrast the thymus gland in infancy...Ch. 17 - Distinguish between the effects of menopause and...
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- Overproduction of ________ causes gigantism. a. growth hormone c. insulin b. cortisol d. melatoninarrow_forward_______ has effects on body tissues in general. a. ACTH b. TSH c. LH d. Growth hormonearrow_forwardParathyroid hormone stimulate__________. a. bone breakdown b. bone deposition c. red blood cell formation d. all of the abovearrow_forward
- Figure 37.14 Hyperthyroidism is a condition in which the thyroid gland is overactive. Hypothyroidism is a condition in which the thyroid gland is underactive. Which of the conditions are the following two patients most likely to have? Patient A has symptoms including weight gain, cold sensitivity, low heart rate, and fatigue. Patient B has symptoms including weight loss, profuse sweating, increased heart rate, and difficulty sleeping.arrow_forwardAddisons disease develops when the adrenal cortex does not secrete enough mineralocorticoids and glucocorticoids. President John F. Kennedy was diagnosed with the disease when he was a young man. Before he started treatment with hormone replacement therapy, he was hypoglycemic and lost weight. Which missing hormone was responsible for his weight loss? How might Addisons disease have affected his blood pressure?arrow_forwardADH and oxytocin are hypothalamic hormones secreted from the pituitarys _____________ lobe. a. anterior b. posterior c. primary d. secondaryarrow_forward
- When blood calcium levels are low, PTH stimulates ________. a. urinary excretion of calcium by the kidneys b. a reduction in calcium absorption from the intestines c. the activity of osteoblasts d. the activity of osteoclastsarrow_forwardWhat is NOT an effect of parathyroid hormone (PTH)?a. increased absorption of calcium ions by the small intestineb. increased osteoblast activityc. increased reabsorption of calcium ions from fluid in the kidneysd. increased release of calcium ions from bonearrow_forwardWhich of the following hormones increases blood calcium levels? a. calcitoninb. thyroxine (T4)c. parathyroid hormoned. mineralocorticoidsarrow_forward
- Osteoporosis is a loss of bone density that can be caused by low concentrations of calcium in bones. Abnormal bone calcium is MOST likely caused by dysregulation of which organ? A. adrenal gland B. pancreas C. parathyroid gland D. thymusarrow_forwardThe primary hormone controlling blood calcium levels in humans is: calcitriol calcitonin insulin parathyroid hormonearrow_forwardWhich of the following statements about calcium homeostasis is FALSE? *PTH stimulates calcium uptake by bonesThe parathyroid gland secretes PTH in response to low calcium levels.The thyroid gland secretes calcitonin in response to high blood calcium levels.Calcitonin targets bone cells..Calcitonin and PTH are antagonistic hormones (have opposing functions)..arrow_forward
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