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- FSH and LH release from the anterior pituitary is stimulated by. TSH GnRH T3 PTHThe level of a sex hormone, testosterone (T), is controlled by negative feedback. Another hormone, gonadotropin-releasing hormone (GNRH), is released by the hypothalamus of the brain, which triggers the pituitary gland to release luteinizing hormone (LH). LH stimulates the gonads to produce T. When there is too much T in the bloodstream, it feeds back on the hypothalamus, causing it to produce less GNRH. While this does not describe all the feedback loops involved in regulating T, answer the following questions about this particular feedback loop.The level of a sex hormone, testosterone (T), is controlled by negative feedback. Another hormone, gonadotropin-releasing hormone (GNRH), is released by the hypothalamus of the brain, which triggers the pituitary gland to release luteinizing hormone (LH). LH stimulates the gonads to produce T. When there is too much T in the bloodstream, it feeds back on the hypothalamus, causing it to produce less GnRH. While this does not describe all the feedback loops involved in regulating T, answer the following questions about this particular feedback loop. a. What is the stimulus in this system? Explain your answer.
- Which of the following is true regarding LH signaling in men? O Stimulates leydig cells to produce testosterone O Stimulates the sertoli cells to increase spermatogenesis O Stimulates the leydig cells to produce inhibin OStimulates the granulosa cells to increase spermatogenesis Stimulates the theca cells to produce testosteroneSystems that maintain homeostasis rely on feedback mechanisms shown below. A. Label the flowchart using the Using LH as an example, explain regulation of luteinizing hormone. B. what a tropic hormone is. ↑ Your answer с LA IH hypothalamus V A 2 31 O OName six hormones secreted by the anterior lobe of the pituitary gland. Name two hormones secreted by the posterior lobe of the pituitary gland. Name the pituitary hormone responsible for the following actions: a. stimulates ovarian follicle to secrete estrogen and egg development b. causes kidneys to conserve water c. stimulates cells to increase in size and divide more rapidly d. essential for egg release from the ovary e.stim ulates secretion from thyroid gland f. causes contraction of uterine wall muscles g. stimulates secretion from adrenal cortex h. stimulates milk production 4. Name two thyroid hormones that affect metabolic rate. 5. Name a hormone secreted by the thyroid gland that acts to lower blood calcium. 6. Name a hormone that acts to raise blood calcium 7. Name three target organs of parathyroid hormone. 8. Name two hormones secreted by the adrenal medulla. 9. List five different effects produced by these medullary hormones. 10. Name the most important…
- What hypothalamic hormone triggers the release of ACTH from the anterior pituitary gland? What is the function of gonadotropin releasing hormone? Where is it released from? Know Table 16.2 Pituitary Hormones: Summary of Regulation and effects What is the function of oxytocin? What stimulates its release?What inhibits its release? What is its effects on the uterus? What is its effect on the breast? What is the function of ADH? What stimulates its release? What inhibits its? What is diabetes insipidus What is the function of Growth Hormone? What stimulates its release? What inhibits it? What are its effects on target organs? What is gigantisism, acromegaly and dwarfism? What is the function of TSH? What stimulates its release? What inhibits it? What are its effects on target organs? What are the effects of hypothyroidism and hyperthyroidism What is the function of ACTH? What stimulates its release? What inhibits it? What are its effects on target organs? What is cushing syndrome?…Hypothalamus (-) (-) Anterior Pituitary (-) |(-) 3 Corpus Luteum |5 Follicle Estrogen (+) (+) Match four of the hormones of the negative feedback numbered above with their function given below. Function: Hormone: Stimulates the development of an ovum Stimulates the corpus luteum to release progesterone Suppresses GNRH, FSH, LH production in the follicular phase Suppresses GNRH, FSH, and LH production in the luteal phase 2.Which of the following are ALL secreted by the anterior pituitary? O GH, prolactin, and thyroxine ACTH, LH, and oxytocin O FSH, GH, and TSH FSH, LH, and testosterone ADH, glucagon, and TSH
- Melatonina. is produced by the posterior pituitary.b. production increases as day length increases.c. inhibits the development of the reproductive system.d. increases GnRH secretion from the hypothalamus.e. decreases the tendency to sleep.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 FSHWhich of the following statements regarding pituitary hormones is FALSE? Adrenocorticotropic hormone, released by the anterior pituitary, targets the adrenal medulla to increase cardiac output and blood flow. Luteinizing hormone, an anterior pituitary hormone, triggers ovulation of an egg from the ovary and causes the ruptured follicle to produce progesterone and some estrogens. Hyposecretion of follicle-stimulating hormone or luteinizing hormone leads to sterility in both males and females. O The hypothalamus makes oxytocin and antidiuretic hormone, which are transported the posterior pituitary for storage.
