EBK BIOLOGY
6th Edition
ISBN: 8220106777640
Author: Maier
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 6LTB
Which of the following is mismatched?
- urethra: sperm passage;
- testes: hormone production;
- vas deferens: semen production;
- seminiferous tubules: sperm production
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Which of the tubular structures shown in Figure are the sperm “factories”?
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tubules. Which of the following factor contribute to the spermatogenic cycle/wave?
Retinoic acid signaling in the testis.
AR levels in Sertoli cells.
Activin and inhibin levels within the seminiferous tubule.
Androgen receptor (AR) levels in Leydig and peritubular cells.
Testosterone levels in the lumen of the seminiferous tubules.
Which of the following statements is NOT true concerning the hormonal control over the male reproductive system?
These hormones are involved in a negative feedback relationship
The hypothalamus secretes a hormone called gonadotropin-releasing hormone
Luteinizing hormone controls the production of sperm in the seminiferous tubules
Follicle-stimulating hormone and luteinizing hormone are present in both males and females
The interstitial cells produce testosterone
Chapter 7 Solutions
EBK BIOLOGY
Ch. 7 - List several ways in which meiosis differs from...Ch. 7 - Add labels to the figure that follows, which...Ch. 7 - Prob. 3LTBCh. 7 - A sperm cell follows which path? seminiferous...Ch. 7 - An egg cell that is not fertilized follows which...Ch. 7 - Which of the following is mismatched? urethra:...Ch. 7 - The production of gametes. ___________. begins at...Ch. 7 - If humans have 23 pairs of chromosomes, each...Ch. 7 - Prob. 9LTBCh. 7 - Prob. 10LTB
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Figure 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_forwardFigure 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.arrow_forwardFigure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.arrow_forward
- Color the following parts: Spermatic Cord- Gray Fibrous tissue-Brown Seminiferous tubules-Yellow Rete testis-blue Efferent ductules-green Epididymis Orange Urethra-purplearrow_forwardWhat does the graph show about estrogen and progesterone before and after ovulation? Please choose from one choice below. Before ovulation: Progesterone level is higher than estrogen; After ovulation: Estrogen level is higher than progesterone Before ovulation: Estrogen level is lower than progesterone; After ovulation: Progesterone level is higher than estrogen Before ovulation: Estrogen level is higher than progesterone; After ovulation: Progesterone level is higher than estrogen Before ovulation: Progesterone level is higher than estrogen; After ovulation: Estrogen level is lower than progesteronearrow_forwardWhich of the following is LEAST LIKELY a function of the male reproductive system? Production of male sex hormones Nurturing the development of and providing nourishment for the new individual Sustaining and transfer of the sperm cells to the female Production of male sex cells, or sperm cells, in the testesarrow_forward
- The two principal ions involved in the generation of the action potential in the nerves are : * Sodium and potassium O None of the above O Sodium and Calcium Calcium and potassium The seminiferous tubules produce: * none of the above sperms estrogen progesteronarrow_forwardWhich of the following is an example of how sperm are equipped to survive outside of the male body? O The acrosomal enzyme in the head of the sperm protect the sperm from the female immune lysosomes. O Semen is alkaline which neutralizes the acidity of the vagina The bulbourethral gland produces fructose to nourish sperm O They do not have mitochondria, so they are not dependent upon aerobic respiration.arrow_forwardWhich of the following statements is/are NOT true with regards the mammary gland? Lactiferous ducts are found all around the nipple. All the choices None of the choices Mammary glands are modified sudoriferous glands. It is responsible for milk production. Which of the following is NOT a mechanism for regulation of hormonal secretion in the female reproductive system? None of the choices Progesterone decreases secretion of GnRH and LH. All the choices Estrogen release Decreases secretion GnRH, FSH & LH. Inhibin results in decreased secretion of FSH and LH. Which of the following is the GREATEST in terms of number? Number of sperm produced from one spermatid Number of chromosomes in a spermatid Number of sperm produced from a single spermatogonium Length in inches…arrow_forward
- Trace the flow of sperm from formation to eventual release from a male cat. Use number 1 as the point of originarrow_forwardAlthough the most effective form of an oral contraceptive for woman contain estrogen and progestin, some birth control pills contain a small dose of progestin-only. This is because there are many risks and side effects. Which of the following statements is NOT a reason for using a progestin-only oral contraceptive? Select one: A. progesterone maintains the corpus luteum as corpus luteum release a large amount of progesterone and estrogen. B. progesterone suppresses the maturation of follicles, thereby preventing ovulation of a mature ovum. C. progestin-only oral contraceptives prevent the production of FSH and LH in the anterior pituitary. D. progesterone suppresses the production of GnRH in the hypothalamus.arrow_forwardAfter learning about the reproductive systems, how would advise a couple with following concern: "If we do not want a baby for next two years, how can we calculate the safe sex period?" She shares that her cycle is regular but not standard 28 days long cycle (so the standard explanation form different sources won't work unless you think critically)! At what time of the female cycle is she most likely to prevent fertilization of her ovulated egg? Consider the fact that her cycle is not 28 days but longer or shorter (you pick). Do males have any time (in their cycle- if any) when their gametes would not be able to fertilize the egg? In other words when can intercourse lead to least chance of pregnancy? Feel free to check with your older friends, doctors, nurses, or anyone who you feel comfortable talking about this.arrow_forward
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