Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 27, Problem 19RQ
The timing of puberty can be influenced by which of the following?
- genes
- stress
- amount of body fat
- all of the above
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The development of sex and gender is a good example of a developmental cascade because:
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Although having an X and a Y chromosome at conception typically leads to the development of testes during prenatal development, this may not lead to typical male genitalia if certain hormones are present later in development
Two people may have the same gonads early in prenatal development but end up with different external genitalia and gender identities as a result of differences in the prenatal environment
All of the options listed here are correct
Having two X chromosomes at conception typically leads to the development of ovaries during prenatal development, which typically leads to high levels of estrogen in puberty, which typically leads to a female gender identity in adulthood
The first outward change of puberty in girls is:
Rapid growth to reach the adult height and weight.
Enlargement and development of the breasts
Increase in clear vaginal secretions.
Onset of menstruation .
Which of the following are hormones that influence puberty? Select all that apply.
Relaxin
Luteinizing hormone
O Prostaglandin
Testosterone
Follicle-stimulating hormone
Chapter 27 Solutions
Anatomy & Physiology
Ch. 27 - Watch this video...Ch. 27 - Watch this video...Ch. 27 - Watch this video...Ch. 27 - Watch this series of videos...Ch. 27 - A babys gender is determined at conception, and...Ch. 27 - What are male gametes called? ova sperm testes...Ch. 27 - Leydig cells ________. secrete testosterone...Ch. 27 - Which hypothalamic hormone contributes to the...Ch. 27 - What is the function of the epididymis? sperm...Ch. 27 - Spermatogenesis takes place in the ________....
Ch. 27 - What are the female gonads called? oocytes ova...Ch. 27 - When do the oogonia undergo mitosis? before birth....Ch. 27 - From what structure does the corpus luteum...Ch. 27 - Where does fertilization of the egg by the sperm...Ch. 27 - Why do estrogen levels fall after menopause? The...Ch. 27 - The vulva includes the ____________. lactiferous...Ch. 27 - What controls whether an embryo will develop...Ch. 27 - Without SRY expression, an embryo will develop...Ch. 27 - The timing of puberty can be influenced by which...Ch. 27 - Briefly explain why mature gametes carry only one...Ch. 27 - What special features are evident in sperm cells...Ch. 27 - What do each of the three male accessory glands...Ch. 27 - Describe how penile erection occurs.Ch. 27 - While anabolic steroids (synthetic testosterone)...Ch. 27 - Follow the path of ejaculated sperm from the...Ch. 27 - Identify some differences between meiosis in men...Ch. 27 - Explain the hormonal regulation of the phases of...Ch. 27 - Endometriosis is a disorder in which endometrial...Ch. 27 - Identify the changes in sensitivity that occur in...Ch. 27 - Explain how the internal female and male...Ch. 27 - Explain what would occur during fetal development...
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- Which of the following statements is true? Genetics play no role in endometriosis. Women who have mothers, aunts, and sisters with endometriosis are more likely to develop the condition themselves. Endometriosis is typically diagnosed after menopause. Exposure to estrogen through foods, medications and other environmental factors does not contribute to a woman’s risk of endometriosis.arrow_forwardWhy does puberty occur too late or too early in some individuals?arrow_forwardWhich of the following mechanisms best explains the contraceptive effect of birth control pills that contain both synthetic estrogen and progestin? Inhibition of ovulation Impairment of implantation hyperplastic changes of the endometrium Production of uterine secretions that are toxic to developing embryos Impairment of sperm transport due to uterotubal obstruction Direct inhibition of oocyte maturationarrow_forward
- A couple living in Florida is trying to have a baby, but they are having trouble getting pregnant. The male is very light skinned yet enjoys spending as much time as possible outdoors in the sun. From the male's perspective, why might he be contributing to the trouble with getting pregnant? Excessive ultraviolet light exposure can reduce folate levels, and folate is required for normal sperm development. Excessive heat from the sunlight inhibits normal sperm production; thus, he probably does not have enough sperm. The male does not have enough melanin production to support normal sperm development. Excessive sunlight exposure can rapidly increase folate levels, which then inhibits normal sperm development. Normal sperm development occurs best in colder temperatures; thus, living in Florida he has a reduced chance of getting his partner pregnant.arrow_forwardDuring pregnancy, FSH and LH levels should be: High-progesterone stimulates the release of FSH and LH High All hormones are high during pregnancy. Low the high levels of estrogen and progesterone exert a negative feedback effect on LH and FSH Low the pituitary stops functioning during pregnancyarrow_forwardWhat is the function of each part of the diagram?Male Reproductive System: What two phases of a person's life do testosterone determine "male" development? Consider both gonadal and brain development, as outlined in the slides, as well as secondary sex characteristics. What does this imply about gender identity later in life? Female Reproductive System:Label this diagram. What is the function of each part of the diagram? Explain IN DETAIL how the following figure describes one month in a woman's life between puberty and menopause. What is happening day by day? What happens at puberty to get it started and what happens at menopause to end it?arrow_forward
- 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.arrow_forwardBleeding occurs when there is no fertilization. Low levels of both ________ and ________ make the blood vessels of the endometrium constrict, cutting off blood flow to the uterine lining. Ovulation occurs in the ovaries at the end of this stage, usually around 14, triggered by a surge in the ________ from the anterior pituitary gland. ________ happens on days 15-28. This phase is from ovulation.arrow_forwardThe correct order of the process that occurs when a sperm encounters an egg is the sperm reaches ovum, implantation occurs, zygote is formed, embryo begins secreting hCG. sperm reaches ovum, zygote is formed, implantation occurs, embryo begins secreting hCG. sperm reaches ovum, embryo begins secreting hCG, implantation occurs, zygote is formed. sperm reaches ovum, embryo begins secreting hCG, zygote is formed, implantation occurs. OOO QUESTION 20arrow_forward
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