Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 45, Problem 8TYU
DRAW IT In mammals, milk production by mammary glands is controlled by prolactin and prolactin-releasing hormone. Draw a simple sketch of this pathway, including glands, tissues, hormones, routes for hormone movement, and effects.
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DRAW IT In mammals, milk production by mammary glandsis controlled by prolactin and prolactin-releasing hormone.Draw a simple sketch of this pathway, including glands, tissues,hormones, routes for hormone movement, and effects.
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Estradiol released into the blood stream, acts on the pituitary cells
Oxytocin produced in hypothalamic neurons, released from axons into the blood stream in the posterior hypothalamus
Epithelial cells in arterioles release nitric oxide that causes relaxation of the adjacent smooth muscle cells
Insulin released from the pancreas into the blood, acting on liver cells to simulate glucose uptake
Release of cytokines by a macrophage, with cytokines acting on that macrophage to stimulate its immune function
A.
Neuroendocrine signaling
B.
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C.
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D.
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Does the following table properly summarize negative feedback loop of each tropic hormone? If not, place the correct answer beside each box.
Chapter 45 Solutions
Campbell Biology (10th Edition)
Ch. 45.1 - How do response mechanisms in target cells differ...Ch. 45.1 - Prob. 2CCCh. 45.1 - Prob. 3CCCh. 45.2 - What are the roles of oxytocin and prolactin in...Ch. 45.2 - How do the two fused glands of the pituitary gland...Ch. 45.2 - WHAT IF? 2192 Propose an explanation for why...Ch. 45.2 - what if? Lab tests of two patients, each...Ch. 45.3 - If a hormone pathway produces a transient response...Ch. 45.3 - Prob. 2CCCh. 45.3 - Prob. 3CC
Ch. 45 - Prob. 45.1CRCh. 45 - Prob. 45.2CRCh. 45 - Prob. 45.3CRCh. 45 - Which of the following is not an accurate...Ch. 45 - Prob. 2TYUCh. 45 - Growth factors are local regulators that (A) are...Ch. 45 - Prob. 4TYUCh. 45 - Prob. 5TYUCh. 45 - Which of the following is the most likely...Ch. 45 - The relationship between the insect hormones...Ch. 45 - DRAW IT In mammals, milk production by mammary...Ch. 45 - Prob. 9TYUCh. 45 - Prob. 10TYUCh. 45 - Level 3: Synthesis/Evaluation 11. WRITE ABOUT A...Ch. 45 - Prob. 12TYU
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- Researchers measured prolactin and growth hormone in the blood plasma of six subjects at regular intervals over a 24-hour period. The investigators were interested in determining if the levels of these two hormones cycle over a 24-hour period. The Figure presents the results of their experiments, with the y axis values showing the amount of each hormone expressed as a percentage of the 24-hour mean value, and each point showing the average of the six subjects levels. FIGURE Mean concentrations of prolactin and growth hormone in plasma, averaged for six subjects and expressed as a percentage of the average concentrations measured for the 24-hour period. Do the results support the hypothesis that the changes in prolactin level over a 24-hour period are associated with the sleepwake cycle? Source: From J. F. Sassin et al. 1972. Human prolactin: 24-hour pattern with increased release during sleep. Science 177:12051207.arrow_forwardGive answer to the question in the picturearrow_forwardPlease answer question 27arrow_forward
- Hormone release and regulation is a complex interplay of control systems, feedback pathways and the concentration of circulating substances. Demonstrate your understanding of how negative feedback systems work by considering what would happen if the usual mechanisms no longer applied. You may like to think about an ectopic source of adrenocorticotropic hormone (ACTH), as secreted from a small cell carcinoma of the lung, as an example. In your explanation of how negative feedback systems can be derailed, describe how hormone/s released from the target endocrine organ usually regulate the feedback loop.arrow_forwardIdentify the classical vertebrate endocrine glands and describe the actions of their hormones; describe the effects of hypersecretion and hyposecretion on homeostasis.arrow_forwardOne of the main endocrine glands in the human body is the pituitary gland. This gland produces a variety of hormones with different effects. Among these are a heterogeneous group of hormones called tropic hormones, which directly stimulate the secretion of other hormones from downstream endocrine glands. Which of the following are tropic hormones? Select all that apply. LH Prolactin Oxytocin ACTH TSH testosteronearrow_forward
- True or false please explainarrow_forwardCompare and contrast how the endocrine and neural systems do long- distance communication within the mammalian body. State and be able to recognize the roles of neurons and various types of glia (astrocytes, oligodendrocytes, Schwann cells, microglia). Give two mechanisms for how different target cells exposed to the same hormone can respond in different ways. Predict how perturbations to the hypothalamus, pituitary gland, thyroid, the hormones they secrete, or iodine levels will affect hormone levels, thyroid size, metabolic rate, and intelligence in children. Distinguish between asexual and sexual reproduction. Discuss how the environment, sex chromosomes, sex- determination genes, hormone levels, and anatomical features can contribute to sex determination in people or other organismarrow_forwardMatch the following hormones with their actions. More than one hormone can correspond to the same function. (1) growth hormone (2) thyroid-stimulating hormone (3) prolactin (4) adrenocorticotropic hormone (5) follicle-stimulating hormone (6) luteinizing hormone A. milk production B. cell division C. metabolic rate D. exerts action on gonads E. controls secretion of adrenal cortex hormones.arrow_forward
- Levels of the Female Reproductive Hormones during the Menstrual Cycle Hormone Day 4 Day 14 Day 21 Estrogen (pg/mL) N/A >100 <60 Progesterone (ng/mL) N/A <1.5 >15 LH (mIU/mL) <7 >15 N/A FSH (mIU/mL) <13 >15 N/A Identify the hormones numbered in the graph above. Number: Answer Answer Answer Answer Hormone: Estrogen Progesterone LH FSHarrow_forwardDiscuss hormone cascade pathway in animalsarrow_forwardAnswer the question in the picture.arrow_forward
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