To determine: The other context in which an individual learn about positive feedback in female reproduction.
Introduction: Feedback mechanism is defined as a closed loop system in which the output of a particular biochemical event is rooted back to the organ which affects the biochemical event. This feedback can either accelerate or decelerate the biochemical reaction. Based on the ability of the feedback signal to accelerate or decelerate there are two types of feedback mechanisms positive feedback and negative feedback. In positive feedback, the end product increases the overall
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- Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.arrow_forwardHypogonadism as a condition where the body does not produce enough testosterone. The symptoms of hypogonadism include infertility and a decrease in a secondary sex characteristics. There are two types of hypogonadism. Primary hypogonadism is caused by problems stemming from the testicles, and secondary hypogonadism is caused by problems stemming from the hypothalamus or the pituitary gland. Individuals with hypo gonad is him are often treated with testosterone replacement therapy. Draw or sketch a feedback loop for an individual with Primary Hypogonadism. When constructing a feedback loop: - Clearly label to structures are gonads involved in the feedback loop - Use arrows to indicate which way the signal is headed - Indicate whether the hormone levels are increasing or decreasing. - Include all the hormones involved in the feedback loop. - Don't forget to label whether the feedback loop is positive or negative and which way the feedback signals are headed. Draw or sketch a feedback…arrow_forwardPart 1: The hormones listed below all play a key role in male reproduction: Follicle Stimulating Hormone (FSH) • Luteinising Hormone (LH) Testosterone Explain the function(s) of these hormones giving reference to: their origin (where they made and released from), their target (cell, tissue, or organ), their stimulatory effects, and where relevant, their inhibitory effects.arrow_forward
- Use the image to answer the question. Posterior pituitary releases oxytocin Baby suckles at breast Oxytocin stimulates the release of breast milk Oxytocin is a hormone synthesized by hypothalamic neurons and released by the pituitary gland. The release of oxytocin is regulated by a feedback loop represented in the diagram. Explain why this is an example of positive feedback regulation. Predict what occurs when a baby is weaned and no longer breastfeeds. В I = 三 1000 ered MacBook Air 20 F3 F1 F2 B00 F4 % %24 23arrow_forwardUse the image to answer the question. Posterior pituitary releases oxytocin Baby suckles at breast Oxytocin stimulates the release of breast milk Oxytocin is a hormone synthesized by hypothalamic neurons and released by the pituitary gland. The release of oxytocin is regulated by a feedback loop represented in the diagram. Explain why this is an example of positive feedback regulation. Predict what occurs when a baby is weaned and no longer breastfeeds.arrow_forwardWhat hormone should be given to a mother to induce labor if it has not started naturally or can be used to strengthen contractions to aid childbirth? * prostaglandin O prolactin O vasopressin O oxytocinarrow_forward
- Feedback Loop for Lactation Hypothalamus Smooth Muscle Contractions C E Match the letters from the feedback loop diagram above with their descriptions given below. Description Letter Охytocin Prolactin Milk production Anterior pituitary Posterior pituitaryarrow_forwardAn otherwise normal adult XY-man begins lactating. Explain circumstances that could cause this. What would have to happen in order for this to occur? Particularly consider the endocrine system role, but also the anatomy involvedarrow_forwardWhat activity during oocyte activation prevents penetration by additional sperm? Also, after a sperm finds the ovum, list and briefly describe three main steps that have to occur, between the sperm and the ovum, that would lead to the moment of conception.arrow_forward
- Identify 1 effect of the hormone Inhibin in pregnancy. Select one: O a. This inhibits the secretion of follicle stimulating hormaone by the anterior pituitary gland - preventing ovulation O b. It is know to mediate the haemodynamic changes that occur during pregnancy such as; increased cardiac output, increased renal flow, increased arterial compliance 0 с. This influences the transamniotic waste transfer from the mother to the fetus sidearrow_forwardThe hypothalamus regulates many different of metabolic, developmental, and autonomic nervous system functions. For example, the hypothalamus produces ____ during puberty. FSH (follicle-stimulating hormone) and LH (luteinizing hormone) estrogen and testosterone GnRH (gonadotropin-releasing hormone)arrow_forwardLuteinizing hormone (LH): Which of the following is correct ? Stimulates testosterone secretion LH surge stimulates ovulation Stimulates gonadotropin-releasing hormone (GnRH) secretionarrow_forward
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning