1 Both semen and urine are carried outside the body through a tube called the ____.A) vas deferens B) urethra C) oviduct D) epididymis 2 During fertilization, what process allows steps 1-4 to occur, as shown here? (24.0K)A) ovum travels through oviduct B) lysosome strengthens the plasma membrane C) hundreds of sperm penetrate the plasma membrane D) acrosome enzymes weaken the plasma membrane 3 How is thyroxine significant in adolescence?A) It prevents human growth hormone from being produced. B) It decreases metabolic rate and slows growth. C) It increases metabolic rate and stimulates growth. D) It slows development of tissues. 4 Immature eggs that develop into an ovum are called ____.A) zygotes B) oviducts C) oocytes D) polar bodies 5 In the ____ stage of birth, the placenta leaves the mother's body.A) placental B) expulsion C) dialation D) fetal 6 In which stage of birth does the cervix open?A) expulsion B) dialation C) placental D) fetal 7 The ____ is a hollow ball of cells that develops from the morula.A) blastocyst B) ovidiuct C) ovary D) chorion 8 The procedure in which sound waves are converted to images of the fetus is called ____.A) Chorionic villus sampling B) Amniocentesis C) Ultrasound D) DNA analysis 9 What are the four extraembryonic membranes in fetal development?A) acrosome, placenta, plasma membrane, morula B) placenta, morula, blastocyst, yok sac C) amnion, chorion, yolk sac, allantios D) amnion, yolk sac, acrosome, morula 10 What causes the amniotic sac to tear during labor?A) division of the blastocyst B) opening of the cervix C) expulsion of the baby D) uterine contractions 11 What do the inner and outer surfaces of the placenta consist of?A) amniotic tissue and corpus luteum B) chorion and uterine tissue C) amniotic tissue and blastocyst D) corpus luteum and chorion 12 What hormone stimulates the gland shown here, in order to regulate testosterone? (28.0K)A) estrogen B) gonadotropin-releasing hormone C) dopamine D) progesterone 13 What is occurring during the flow phase of the menstral cycle?A) Fertilization occurs near the ovary. B) The amniotic sac is torn. C) A morula is formed in the uterus. D) Tissues are shed from the endometrium. 14 What must occur before the expulsion stage of birth shown here? (98.0K)A) a cesarean procedure B) detachment of the placenta C) dialation of the cervix D) cutting of the umbilical cord 15 What results from the first meiotic division of the oocyte?A) development of a polar body B) development of a zygote C) sperm formation D) ovulation