Calcitonin is responsible for... increasing blood calcium levels decreasing blood calcium levels decreasing the amount of calcium in the bones none of the above Which is TRUE about oogenesis? The egg fully matures once it leaves a follicle. The process of oogenesis happens in the uterus. Estrogen levels drop before ovulation due to negative feedback. Oogenesis is the scientific term for "having your period".

Calcitonin is responsible for... increasing blood calcium levels decreasing blood calcium levels decreasing the amount of calcium in the bones none of the above Which is TRUE about oogenesis? The egg fully matures once it leaves a follicle. The process of oogenesis happens in the uterus. Estrogen levels drop before ovulation due to negative feedback. Oogenesis is the scientific term for "having your period".

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter21: Reproductive System

Section: Chapter Questions

Problem 4RQ

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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.
Watch this video (http://openstaxcollege.org/l/ovulation) to observe ovulation and its initiation in response to the release of FSH and LH from the pituitary gland. What specialized structures help guide the oocyte from the ovary into the uterine tube?
How Is Sex Determined? The absence of a Y chromosome in an early embryo causes the: a. embryonic testis to become an ovary b. Wolffian duct system to develop c. Mllerian duct system to degenerate d. indifferent gonad to become an ovary e. indifferent gonad to become a testis
Figure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.
Ovaries secrete the hormone estrogen in greater amounts after menstruationand a few days before ovulation. Among its many effects, estrogen causesthe up-regulation of receptors in the uterus for another hormone secretedby the ovaries, called progesterone. Progesterone, which is secreted afterovulation, prepares the uterine wall for possible implantation of an embryo.Pregnancy cannot occur unless the embryo implants in the uterine wall.Predict the consequence of the ovaries’ secreting too little estrogen.
Which of the following events does NOT occur in preparation for pregnancy? * After fertilization progesterone & estrogen begin to decline. Without fertilization menstruation occurs. The Secretory phase is due to the growth of endometrial glans & secretion of glycogen. Progesterone & Estrogen cause thickening of the endometrium. The preparatory phase peaks at 1 week after ovulation.
Which of the following is NOT a function of sustentacular cells? O Maintain a blood-testis barrier Absorb sloughed cytoplasm from developing spermatocytes O Stimulate spermatogenesis and spermiogenesis O Secrete testosterone
Follicular fluid/antrum functions to help the 1. assistanc of ovulation 2. development of the follicle 3. growth of bone and closure of the epiphysesl plates 4. muturation of the oocyte 5. storag of E2, P4, GtHs & growth factors
An 18-year-old woman consulted a physician because of her failureto initiate menses. She had experienced normal breast developmentat age 13, but no pubic or axillary hair had ever appeared. Her heightwas 5 feet 6 inches, weight 119 pounds, blood pressure 110/70,and pulse 60 beats/minute. Her physical examination confirmedthe presence of well-developed breasts and the external genitaliaof a normal female. However, the vagina ended in a blind pouch,and there was no evidence of a cervix, ovaries, or a uterus. Withinthe inguinal area, the examining physician could palpate a small,spherical mass on each side. Is this patient’s genotype most likelyXX, XO, or XY? Explain why the genotype you selected is consistent with the manifestations
Combined oral contraceptives are composed of synthetic estrogen combined with small amounts of synthetic progesterone. Your client, Mrs. Vanessa Narciso, has been using COCs as her primary contraception method. She comes to the clinic complaining "Why I cant get pregnant ? I already stopped taking pills.". Your most appropriate response will be: "You should talk to your doctor immediately. You might have developed complications from prolonged use of the pill Your body just needs time to recover from the effects of the pill It may be difficult to get pregnant during the first 3 to 12 months after discontinuation. "It is best not to try to get pregnant at this time since your intake of COCs may cause birth defects "You should have been able to conceive by now. Would your husband be willing to undergo labsly test
Julie & her husband Tom have been trying to conceive a child. They have been unsuccessful. Julie discontinued her birth control (contained estrogen and progesterone) almost 7 months ago. Julies libido has been low lately. Julie scheduled an appointment with her gynecologist and told her of her irregular menstrual cycle. Julie quit her birth control almost 7 months ago and she has only had 2 periods during that time. Julies doctor ordered some labs to test her blood for estrogen and progesterone concentrations. When the results came back, the doctor noted low blood levels of both progesterone and estrogen. Julies doctor wants to find out what is causing the low levels of progesterone and estrogen. What additional blood hormone concentrations might be helpful to better understanding what could be causing Julies symptoms? Why would those be best?
Which pituitary hormone might contribute to multiple births and why? Which pituitary hormone might contribute to multiple births and why? Luteinizing hormone stimulates ovulation. Ovulation of more than one egg cell per cycle can result in the formation of multiple embryos. Follicle-stimulating hormone stimulates follicle maturation allowing more than one egg cell to develop during one cycle. Oxytocin promotes uterine contractions necessary to deliver multiple babies. Prolactin stimulates milk production to support multiple births.