front 1 Why are the male testes located in the scrotum outside the body? | back 1 Immature sperm are temperature sensitive. |
front 2 Sperm are stored in the __________. | back 2 Epididymis |
front 3 Genetic variation of individual chromosomes occurs during __________. | back 3 Prophase 1 |
front 4 What is the function of the blood-testis barrier? | back 4 to prevent activation of the immune system of the male against the developing sperm |
front 5 Which of the following is FALSE regarding the vagina of an adult
female? | back 5 The pH of the adult vagina is alkaline. |
front 6 A surge in __________ directly triggers ovulation. | back 6 luteinizing hormone (LH) |
front 7 Why does only one egg, rather than four eggs, develop during oogenesis, given that spermatogenesis results in four sperm formed from one stem cell? | back 7 The unequal cytoplasmic division that results in one egg and three polar bodies ensures that a fertilized egg has ample nutrients for its journey to the uterus |
front 8 What is the role of the corpus luteum? | back 8 to produce hormones that maintain the uterine lining during the first months of pregnancy |
front 9 During the secretory phase of the uterine cycle __________. | back 9 the endometrium prepares for implantation |
front 10 Which of the following conditions might contribute to an increased
probability of having an ectopic pregnancy? | back 10 decreased number of cilia in the uterine tubes |
front 11 The primary function of the uterus is to ________. | back 11 receive, retain, and nourish a fertilized ovum |
front 12 True or False The soft mucosal lining of the uterus is the endometrium. | back 12 True |
front 13 The sperm's acrosome ____________________. | back 13 contains enzymes, which allow the sperm to penetrate the egg. |
front 14 These cells located in between seminiferous tubules produce testosterone _______________ | back 14 Interstitial |
front 15 Fertilization generally occurs in the ________. | back 15 Fallopian tubes |
front 16 During the secretory phase of the menstrual cycle ________. | back 16 progesterone levels are at their highest |
front 17 Functions of testosterone include _______ | back 17 facilitation of muscle and skeletal growth in mass |
front 18 Normally menstruation occurs when ________. | back 18 blood levels of estrogen and progesterone decrease |
front 19 The uterine layer which is shed with each monthly cycle is _________ | back 19 the functional layer of endometrium. |
front 20 Effects of estrogen include _______ | back 20 growth of the breasts at puberty |
front 21 Which is not a part of the proliferative phase of the female
menstrual cycle? | back 21 C. Corpus Luteum |
front 22 True or False A human egg or sperm contains 23 pairs of chromosomes. | back 22 True |
front 23 True or False Ovarian follicles contain mature eggs. | back 23 False |
front 24 Which of the following glands are responsible for 60% of the
synthesis of semen? | back 24 the seminal vesicles |
front 25 Which of the following constitutes the female counterpart of the male
scrotum? | back 25 the labia majora |
front 26 Sperm freshly deposited in the female vagina are incapable of fertilizing an egg. What must happen first? | back 26 Capacitation |
front 27 Which of the following is the primary germ layer that forms the basis
for the digestive, respiratory, and urogenital systems, and for
associated glands? | back 27 endoderm |
front 28 What structure(s) ultimately form(s) the placenta? | back 28 decidua basalis and chorionic villi |
front 29 A dangerous complication of pregnancy called __________ results in an insufficient placental blood supply, which can starve a fetus of oxygen. The pregnant woman becomes edematous and hypertensive, and proteinuria occurs. | back 29 Preeclampsia |
front 30 Which of the following structures is derived from the
ectoderm? | back 30 D) brain and spinal cord |
front 31 Which body system of a pregnant woman shows the most dramatic physiological changes during pregnancy? | back 31 Cardiovascular System |
front 32 A pregnant woman with preeclampsia becomes edematous and hypertensive. An effective way to treat these symptoms might be _____. | back 32 to use drugs that cause systemic vasodilatation |
front 33 Developmental events during weeks 9-12 include ________. | back 33 sex readily detected from the genitals |
front 34 During which stage of labor is the fetus delivered? | back 34 Expulsion stage |
front 35 True or False The period from fertilization through week eight is called the embryonic period. | back 35 True |
front 36 Sperm move to the uterine tube through uterine contractions and the energy of their own flagella. What other factor is involved in sperm movement? | back 36 reverse peristalsis of the uterus and uterine tubes |
front 37 The umbilical arteries carry ________. | back 37 waste products to the placenta |
front 38 An implantation that takes place in a site other than the uterus is called ____________________. | back 38 ectopic |
front 39 True or False The two hormones responsible for initiating labor are thyroxine and human chorionic thyrotropin. | back 39 False |
front 40 Failure of the foramen ovale to close at birth may result in ________. | back 40 mixing of oxygenated and non-oxygenated blood |
front 41 True or False hCG remains the dominant hormone throughout pregnancy. | back 41 False |
front 42 Relaxin is a hormone produced by the placenta and ovaries. The function of this hormone is to ________. | back 42 Relax the pubic symphysis |
front 43 It is impossible for sperm to be functional (able to fertilize the egg) until after ________. | back 43 They undergo capacitation |
front 44 The hormone that induces labor and controls labor via a positive feedback mechanism is ____________________. | back 44 Oxytocin |
front 45 When does the true moment of fertilization occur? | back 45 it occurs as the maternal and paternal chromosomes combine and produce the diploid ZYGOTE, or fertilized egg. |