To draw: A diagram illustrating hormone interactions during the preovulatory phase.
Introduction: Reproductive system (or genital system) is involved in sexual reproduction. The normal sex cycle including the ovarian follicle development, rupture of follicle, ovum discharge, and formation and regression of corpus luteum is called the ovarian cycle. The timing of the maturation of oocyte is controlled by this cycle. The ovarian cycle consists of three phases, namely the preovulatory phase, late preovulatory phase, and postovulatory phase.
To determine: The specific actions of FSH.
Introduction: Reproductive system (or genital system) is involved in sexual reproduction. The male and female reproductive systems’ function is to propagate the species. The normal sex cycle including the ovarian follicle development, rupture of follicle, ovum discharge, and formation and regression of corpus luteum is called the ovarian cycle.
To determine: The specific actions of estrogens.
Introduction: Reproductive system (or genital system) is involved in sexual reproduction. The male and female reproductive systems’ function is to propagate the species. The normal sex cycle including the ovarian follicle development, rupture of follicle, ovum discharge, and formation and regression of corpus luteum is called the ovarian cycle.
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Chapter 50 Solutions
Biology (MindTap Course List)
- Describe the hormonal control of human male reproduction system with the help of a flow chart & highlight the inhibitory & stimulatory directions in it?arrow_forwardReview negative back mechanism in the endocrine systemarrow_forwardList three hormone-dependent reproductivedisorders and describe the role of the hormone ineach case.arrow_forward
- Visit this link (http://openstaxcollege.org/l/roleofhypo) to watch an animation showing the role of the hypothalamus and the pituitary gland. Which hormone is released by the pituitary to stimulate the thyroid gland?arrow_forwardIdentify the classical vertebrate endocrine glands and describe the actions of their hormones; describe the effects of hypersecretion and hyposecretion on homeostasis.arrow_forwardResearchers 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_forward
- Visit this link (http://openstaxcollege.org/l/hormonebind) to watch an animation of the events that occur when a hormone binds to a cell membrane receptor. What is the secondary messenger made by adenylyl cyclase during the activation of liver cells by epinephrine?arrow_forwardDRAW 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.arrow_forwardWhat is the evolutionary history of birds and mammals' pineal glands? Explain how the pineal hormone melatonin helps birds and mammals regulate seasonal reproductive rhythms. In humans, what role does melatonin perform?arrow_forward
- What is the evolutionary origin of the pineal gland of birds and mammals? Explain the role of the pineal hormone, melatonin, in regulating seasonal reproductive rhythms in birds and mammals. Does melatonin have any function in humans?arrow_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_forward
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