Biology 112 Chapter 16 1. The type of sugar that is found in semen and nourishes sperm is _________________. 2. The enlarged tip of the penis is called the ________________ _____________________. 3. The helmet-like region of the sperm that helps it penetrate the egg is called the _____________________________. 4. The tiny saclike structures in which oocytes are found are called ____________________ ______________________________. 5. A mature ovarian follicle is called a(n) __________________________. 6. The Graafian follicle ruptures at ovulation and is then known as a(n) ________________________ ____________________________. 7. Burrowing of the fertilized egg into the lining of the uterus is called ___________________________. 8. The hormone that helps maintain pregnancy is _______________________________. 9. A fertilized egg is called a(n) ____________________________. 10. The early stages of embryonic development in which rapid mitotic cell divisions occur is called __________________________________. _____1. The exocrine function of the testes is _________________. a. testosterone production b. ovum fertilization c. sperm production d. embryo nutrition e. estrogen production _____2. The actual “sperm-forming factories” of the male reproductive system are the ______. a. interstitial cells b. epididymis c. ductus deferens d. bulbourethral glands e. seminiferous tubules _____3. The male duct system, in order from inside to outside, is ________. a. epididymis, ductus deferens, urethra, ejaculatory duct b. ejaculatory duct, epididymis, ductus deferens, urethra c. ductus deferens, epididymis, ejaculatory duct, urethra d. epididymis, ductus deferens, ejaculatory duct, urethra e. ejaculatory duct, ductus deferens, epididymis, urethra _____4. Which of the following is NOT a component of semen? a. sperm b. seminal fluid c. prostatic fluid d. bulbourethral fluid e. epididymal fluid _____5. Fertilization usually occurs in the ___________. a. ovary b. Graafian follicle c. uterine tubes d. uterus e. vagina _____6. The layer of the uterus that sloughs off on a monthly basis is the ____________. a. endometrium b. myometrium c. perimetrium d. epimetrium e. hypometrium _____7. Oogenesis in females starts _____________. a. before birth b. at birth c. at puberty d. only during adulthood e. during menopause _____8. The hormone responsible for ovulation is _______________. a. estrogen b. progesterone c. follicle-stimulating hormone d. luteinizing hormone e. adrenocorticotropic hormone _____9. The mammary glands are ______________. a. modified ceruminous glands b. modified sebaceous glands c. modified sweat glands d. modified lacrimal glands e. their own unique type of gland ____10. Parturition is another term for ____________. a. menopause b. menses c. fertilization d. menstruation e. childbirth ____11. Along with prostaglandins, labor is initiated by __________. a. renin b. relaxin c. oxytocin d. progesterone e. human chorionic gonadotropin ____12. Menopause is considered to have occurred when ______________. a. a woman misses her first period b. a woman misses two periods in a row c. a woman turns 50 years of age d. a woman has gone a year without menstruating e. a woman has had a hysterectomy