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 12RQ
When do the oogonia undergo mitosis?
- before birth.
- at puberty
- at the beginning of each menstrual cycle
- during fertilization
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Within a single menstrual cycle, what is the approximate day of ovulation?
Put each of the following into the category it belongs with respect to the menstrual cycle.
Time between
menstruation and
ovulation
Corpus luteum
develops
Period of time
when fertilization is
most likely to occur
Menses or
menstrual bleeding
occurs
Endometrium
produces
secretions
LH surge occurs
Endometrium
rapidly increases in
cell number
Days 1-5 of the
cycle
Mature (Graafian)
follicle forms
Days 6-13
Days 15-28
Discharge of blood
and part of the
endometrium
Proliferative Phase
Secretory Phase
Menstrual Phase
Which of the following layers of the uterus undergoes the greatest change during the menstrual cycle?
Broad ligament
Perimetrium
Hymen
Endometrium
Myometrium
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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- Ovulation releases _________. a. the corpus luteum b. a primordial follicle c. a primary oocyte d. a secondary oocyte and first polar bodyarrow_forwardHow 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 testisarrow_forwardA spermatogonial cell undergoes mitosis before entering the meiotic cell cycle en route to the production of sperm. However, during mitosis the cytoplasm fails to divide, and only one daughter cell is produced. A resultant sperm eventually fertilizes a normal ovum. What is the chromosomal complement of the embryo?arrow_forward
- 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_forwardDistinguish between: a. seminiferous tubule and vas deferens b. sperm and semen c. Leydig cells and Sertoli cells d. primary oocyte and secondary oocyte e. follicle and corpus luteum f. the three phases of the menstrual cyclearrow_forwardWhich is the correct order for one turn of the menstrual cycle? a. corpus luteum forms, ovulation, follicle forms b. follicle grows, ovulation, corpus luteum formsarrow_forward
- Which oocyte stage is ovulated? What happens to it if it encounters a sperm cell there? What happens if it does not meet up with sperm?arrow_forwardOutline the roles of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) in the ovarian cycle of a human female.arrow_forwardFigure 43.8 Which of the following statements about the male reproductive system is false? The vas deferens carries sperm from the testes to the penis. Sperm mature in seminiferous tubules in the testes. Both the prostate and the bulbourethral glands produce components of the semen. The prostate gland is located in the testes.arrow_forward
- Within what structure will a fertilized egg implant and start developing?arrow_forwardWhich of the following describes the role of Luteinizing hormone in the ovarian cycle? o Inhibits the hypothalamus from secreting GNRH o Directly promotes thickening of the endometrium o Simulates the ovary to increase aldosterone o Induces the corpus luteum to secrete progesterone Stimulates lactation in the mammary glandsarrow_forwardModeling the Menstrual Cycle: The menstrual cycle takes an average of 28 days to complete and repeat. There are 4 phases: Day 1-5 Menstruation (period) Day 6-14 proliferation Day 11-13 Ovulation Day 15-28 Secretory phase Task: Create and annotate a model to show what is happening in the female body during the 4 phases of the menstrual cycle. This can be done digitally or on paper. If you chose to do this on paper, just make sure it gets to Ms. B. Things to include: Arrange the phases into a cycle Include changes in hormone levels in each phase (PSH, LH, Estrogen, Progesterone) Changes in the uterine lining What is happening to the egg (follicular, ovulation, luteal phase) It might help to start with arranging the phases into a cycle and then fill in details about what is happening at each phase. Use the slideshow on this website as a resource, it's very informative Menstruation Secretory Phase Proliferative Phase Ovulationarrow_forward
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