Which of the following is correct about feedback systems? O Positive feedback systems resist change Positive feedback systems help restore original state O Positive feedback systems are always detrimental (harmful) to an organism O Negative feedback systems are less common than positive feedback systems The hormone oxytocin is involved in a O negative feedback loop during human labour (birth) A high estrogen level has a negative feedback effect on the hypothalamus, decreasing the secretion of gonadotropin releasing hormone (GnRH) Negative feedback systems reinforce the change None of the above are correct O O

Which of the following is correct about feedback systems? O Positive feedback systems resist change Positive feedback systems help restore original state O Positive feedback systems are always detrimental (harmful) to an organism O Negative feedback systems are less common than positive feedback systems The hormone oxytocin is involved in a O negative feedback loop during human labour (birth) A high estrogen level has a negative feedback effect on the hypothalamus, decreasing the secretion of gonadotropin releasing hormone (GnRH) Negative feedback systems reinforce the change None of the above are correct O O

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter5: Integumentary System

Section: Chapter Questions

Problem 5RQ

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The anterior pituitary gland develops from whichembryonic germ layer?a. oral ectodermb. neural ectodermc. mesodermd. endoderm
If there is a decrease in the amount of estrogen level during the menstrualcycle. What type of feedback mechanism will likely to occur?a. Dependent feedback mechanismb. Negative feedback mechanismc. Positive feedback mechanismd. Independent feedback mechanism
Which of this statement is INCORRECT regarding the function of hormones?a) Reproduction and sexual differentiationb) Maintenance of internal environmentc) Maintain body temperatured) Development and growth
Which hormone leads to the expulsionof milk from the breast, when baby sucks it?A. ProgesteroneB. ProlactinC. EstrogenD. Oxytocin
Which of the following hormones is not matched correctly to itseffect on the mother?a. peptide hormones—increased resistance to insulinb. progesterone—reduced chances of the mother having animmune reaction to the fetusc. estrogen—increased uterine blood fl owd. progesterone—relaxation of smooth muscle and decrease inblood pressuree. All of these are matched correctly.
Match four of the hormones of the negative feedback numbered above with their function given below. Function: Hormone: Stimulates the development of an ovum Answer Stimulates the corpus luteum to release progesterone Answer Suppresses GnRH, FSH, and LH production in the follicular phase Answer Suppresses GnRH, FSH, and LH production in the luteal phase Answer
Estrogen (a female sex hormone) levels continuously increase during a woman's menstrual cycle. Estrogen levels drop once menstruation occurs (the ovaries stop releasing estrogen).Is this an example of positive or negative feedback?
The zygote is described as totipotent because itultimately gives rise to all the cells in your body includingthe highly specialized cells of your nervous system.Describe this transition, discussing the steps and processesthat lead to these specialized cells.
Which of the following is an example of negative feedback?a. Uterine contractions increase as labor progresses.b. Insulin decreases blood sugar levels after a meal is eaten.c. Sweating increases as body temperature drops.d. Platelets continue to plug an opening in a blood vessel untilblood fl ow stops.
Katie was getting nervous. At 16, she was the only one in her group offriends who had not started menstruating. Katie had always dreamedof having three beautiful children someday and she was worried. Hermother took her to see Dr. Josephine, who ordered several blood tests.When the results came back, Dr. Josephine gently explained to Katieand her mother that Katie would never be able to have children andwould never menstruate. Dr. Josephine then asked Katie to wait in theouter room while she spoke privately to her mother. She explained toKatie’s mom that Katie has androgen insensitivity syndrome. ThoughKatie is genetically male and her gonads produce more of the malereproductive hormone, testosterone, than the female reproductivehormone, estrogen, Katie did not reflect the tissue changes expected.What malfunction in Katie’s body would cause this? Why does Katie’sbody look feminine if she is genetically male?
How many negative feedback happen during parturition cycle (NOT uterine contraction cycle)? Exclud the negative feedback(s) from the endocrine system a)0, b)1, c)2, d)3, e)4
Why does the estrogen released at the follicular phase inhibit FSH levels by a negative feedback mechanism? A high level of FSH will cause ovulation. A high level of FSH will cause menstruation. To ensure that the endometrium is ready to receive an embryo. To prevent multiple follicles from maturing at the same time.