Chapter 26 Lecture
In females, oogenesis begins while that female is still a fetus in her mother's womb.
True
Meiosis II is not completed in the secondary oocyte until after fertilization.
True
The chorionic membrane of the zygote has genes from the father, and is therefore foreign to the mother's immune system.
True
The corpus luteum secretes hormones to maintain the pregnancy for the first 5-6 weeks of gestation; after that, the placenta takes over.
True
The follicular phase is characterized by rising concentrations of estrogen.
True
The stimulus of sucking causes release of prolactin-releasing hormone via a neuroendocrine reflex.
True
A woman with a 28-day menstrual cycle would like to avoid pregnancy without the use of contraceptives. She should avoid sexual intercourse __________ for the best chance of preventing pregnancy. A) 1 day prior to her LH surge B) on days 7-10 C) 2 days after start of the secretory phase D) when basal body temperature is lowest
A) 1 day prior to her LH surge
Choose the hormone that would not result in growth of, or secretion by the ovaries or testes. A) Adrenocorticotropin B) FSH C) LH D) GnRH
A) Adrenocorticotropin
What process occurs as the zygote travels towards the uterus in the fallopian tubes? A) Cleavage B) Fertilization C) Capacitation D) Polyspermy
A) Cleavage
What hormone triggers ovulation? A) LH B) FSHC C) Progesterone D) hCG
A) LH
How many ova are produced by oogenesis of one oogonia? A) One B) Two C) Four D) Eight
A) One
If a physician wanted to measure a woman's peak progesterone production, when should blood work be performed? A) One week after the LH surge B) Day 7 of the ovulation phase C) Two days prior to menstruation is expected D) Day 14 of the menstrual cycle
A) One week after the LH surge
The process of sperm gaining the ability to fertilize an ovum as they pass through the female reproductive tract is called __________. A) capacitation B) receptiveness C) spermatogenesis D) spermiogenesis
A) capacitation
The seven hour period of time after intercourse when the sperm cells get ready for fertilization is called: A) capacitation B) polyspermy C) acrosomal reaction D) cleavage E) cortical reaction
A) capacitation
The maternal contribution to the placenta is the __________. A) decidua basalis B) chorion frondosum C) chorionic villi D) yolk sac
A) decidua basalis
The correct order of the four phases of sexual response is __________. A) excitation, plateau, orgasm, resolution B) plateau, excitation, orgasm, resolution C) orgasm, excitation, resolution, plateau D) resolution, plateau, excitation, orgasm
A) excitation, plateau, orgasm, resolution
The layer of glycoprotein surrounding an ovulated secondary oocyte is called: A) zona pellucida B) blastocyt C) corona radiata D) acrosome E) chorion
A) zona pellucida
A fertilized egg is called a(n) __________. A) zygote B) blastocyst C) morula D) embryo
A) zygote
What is the process that occurs after a mature follicle ruptures and ejects the oocyte into the uterine tube? A) Macula lutea B) Corpus luteum C) Fibroids D) Mature ovarian follicle
B) Corpus luteum
What effect would the changing estrogen and progesterone levels during parturition have on lactation? A) Decreased OT B) Increased PRL C) Increased dopamine D) Decreased TRH
B) Increased PRL
Which of the following is NOT a role of estriol in parturition? A) Produces more receptors for oxytocin B) Produces the hormone relaxin C) Produces more receptors for prostaglandins D) Produces more gap junctions between myometrial cells
B) Produces the hormone relaxin
Ova are fertilized in the __________. A) cervix B) fallopian tubes C) uterus D) vagina
B) fallopian tubes
The secretory phase of the endometrium occurs when the ovary is in the __________ phase. A) follicular B) luteal C) menstrual D) ovulatory
B) luteal
During which phase of the menstrual cycle of the uterus is the uterine lining shed? A) proliferative phase B) menstrual phase C) luteal phase D) secretory phase E) follicular phase
B) menstrual phase
A ball of about eight cells formed about 50 to 60 hours after fertilization is called a __________. A) zygote B) morula C) blastocyst D) embryo
B) morula
The LH surge causes __________. A) menses B) ovulation C) endometrium build-up D) All of the choices are correct.
B) ovulation
The __________ phase of the endometrium is supported when the ovary is in the luteal phase. A) proliferative B) secretory C) menstrual D) ovulatory
B) secretory
The calcium wave that prevents polyspermy also causes __________. A) the sperm to lose its tail B) the secondary oocyte to finish meiosis II C) mitosis to occur D) All of the choices are correct.
B) the secondary oocyte to finish meiosis II
What hormone may play a role in reducing the size of the uterus following delivery? A) Progesterone B) Prostaglandin C) Oxytocin D) Prolactin
C) Oxytocin
In an attempt to penetrate the shell of the egg, the sperm releases digestive enzymes to break down the shell. This process is called: A) capacitation B) polyspermy C) acrosomal reaction D) cleavage
C) acrosomal reaction
The __________ provides enzymes that allow the sperm to digest a pathway through the zona pellucida to the oocyte. A) chorion B) zygote C) acrosome D) blastocyst
C) acrosome
To delay labor, a drug would need to act by __________. A) inhibiting the actions of progesterone B) stimulating the actions of estrogen C) inhibiting the actions of oxytocin D) stimulating the actions of chorionic gonadotropin
C) inhibiting the actions of oxytocin
During which phase of the menstrual cycle of the ovary does the corpus luteum secrete hormones? A) proliferative phase B) menstrual phase C) luteal phase D) secretory phase E) follicular phase
C) luteal phase
What are the small cells produced by the uneven cytoplasmic divisions or oogenesis? A) Thecal cells B) Follicles C) Antrum D) Polar bodies
D) Polar bodies
The fetal portion of the placenta is called the: A) zona pellucida B) decidua C) corona radiata D) chorion
D) chorion
The first mitotic division of the zygote is called: A) capacitation B) polyspermy C) acrosomal reaction D) cleavage
D) cleavage
Initiation of labor involves all of the following EXCEPT __________. A) corticotropin-releasing hormone from the placenta B) DHEAS from the fetal adrenal gland C) cortisol from the mother and fetus D) human chorionic gonadotropin from the placenta
D) human chorionic gonadotropin from the placenta
In what phase of meiosis is the secondary oocyte arrested? A) anaphase I B) anaphase II C) metaphase I D) metaphase II E).prophase I
D) metaphase II
Which of the following structures of the blastocyst go on to become the fetus? A) amnion B) trophoblast cells C) chorion D) outer cell mass E) inner cell mass
E) inner cell mass
During the first trimester of pregnancy, the ovaries are active endocrine glands.
False
