front 1 Genetic variation is NOT enhanced through __________. mitosis mutation separation of homologous pairs in metaphase I crossing over events fertilization | back 1 a |
front 2 In response to parasympathetic stimulation __________. vessels in the penis constrict ejaculation occurs fertilization is encouraged blood flow increases to the penis spermiogenesis is encouraged | back 2 d |
front 3 The basic difference between spermatogenesis and oogenesis is that __________. the mature ovum is haploid and the sperm is 2n one mature ovum is produced in oogenesis, and four mature sperm are produced in spermatogenesis the mature ovum is diploid and the sperm is 1n two more polar bodies are produced in spermatogenesis spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only | back 3 b |
front 4 The organ that makes estrogen and progesterone is the __________. vestibular gland pineal gland ovary hypothalamus vagina | back 4 c |
front 5 The primary sex organ of the male is the __________. penis testes prostate epididymis seminal vesicle | back 5 b |
front 6 The reason why the testes are suspended in the scrotum is __________. to reduce the chance of infection from the enteric bacteria to provide for a cooler temperature to protect sperm from the immune system to place sperm storage sites nearer the penis to create extra space for the sex organs | back 6 b |
front 7 The sperm's acrosome __________. provides the blood-testis barrier contains enzymes beats, so that the sperm can swim has a high density of mitochondria contains nutrients | back 7 b |
front 8 The surge in LH that occurs during the middle of the ovarian cycle triggers __________. activation of primordial follicles FSH release uterine-lining secretion menstruation ovulation | back 8 e |
front 9 The usual site of fertilization is the __________. vagina uterus vulva ovary uterine tube | back 9 e |
front 10 The uterine layer shed with each monthly cycle is the __________. perimetrium tunica albuginea basal layer of endometrium myometrium functional layer of endometrium | back 10 e |
front 11 __________ cells, located between seminiferous tubules, produce testosterone. Sustentacular Interstitial Thalamic Myometrial Follicle | back 11 b |
front 12 In which uterine phase does the functional layer of the endometrium start to rebuild? preovulatory proliferative secretory ovulation menses | back 12 b |
front 13 What is the most common bacterial sexually transmitted disease in the U.S.? gonorrhea syphilis vaginitis chlamydia genital warts | back 13 d |
front 14 Which cell type is actually ovulated from the ovary? tertiary oocyte ovum secondary oocyte primary oocyte oogonium | back 14 c |
front 15 Which is the most correct sequence of sperm flow in the male duct system? seminiferous tubules, vas deferens, ejaculatory duct, ampulla, urethra seminiferous tubules, prostatic urethra, vas deferens, ejaculatory duct, ampulla seminiferous tubules, epididymis, vas deferens, ampulla, ejaculatory duct, urethra testes, ductus deferens, urethra, seminal vesicle testes, epididymis, ductus deferens, urethra, seminal vesicle | back 15 c |
front 16 Which male structure is homologous to the female's clitoris? epididymis pubis penis scrotum prostate gland | back 16 c |
front 17 Which represents a correct cascade of reproductive hormones in males? FSH, GnRH, LH, testosterone GnRH, LH/FSH, testosterone, inhibin LH, GnRH, FSH, testosterone FSH, LH, GnRH, testosterone FSH, GnRH, testosterone, LH | back 17 b |
front 18 Within the ovary, progesterone is produced by the __________. secondary follicles primary follicles corpus luteum tertiary follicles corpus albicans | back 18 c |
front 19 Sperm are produced in the __________. spermatic cord seminiferous tubules seminal gland interstitial cells prostate epididymis | back 19 b |
front 20 Ovulation in a typical, or "average," cycle usually occurs on day __________. 1 5 14 21 28 | back 20 c |
front 21 What hormone is responsible for the secondary sex characteristics found in women? prolactin progesterone LH FSH estrogen | back 21 e |
front 22 If the testes are both removed before puberty, will secondary sex characteristics develop in the male? Yes, they will develop and the man can produce children. It is impossible to tell. No, they won't develop and the man will be sterile. Yes, they will develop, but the man will be sterile. | back 22 c |
front 23 The muscular wall of the uterus is called the __________. epimetrium perimetrium endometrium myometrium | back 23 d |
front 24 Which of the following hormones causes the oocyte to mature? FSH LH estrogen testosterone | back 24 a |
front 25 Which of the following hormones is NOT involved in the regulation of the number of sperm produced in the testes? gonadotropin-releasing hormone inhibin testosterone PSA | back 25 d |
front 26 Which of the following statements about myoid cells is true? They elevate the testes. When they contract, they cause wrinkling of the scrotal skin. They form a straight tubule that conveys sperm into the rete testis. They surround the seminiferous tubules and contract rhythmically to squeeze sperm and testicular fluid through the tubules out of the testes. | back 26 d |
front 27 Which of the following absorb heat from the testes? the pampiniform plexus the testicular veins the interstitial cells the testicular arteries | back 27 a |
front 28 Which of the following structures passes through the inguinal canal? the prostatic urethra the ejaculatory duct the spermatic cord epididymis | back 28 c |
front 29 Which of the following structures makes up most of the male urethral length? spongy urethra ejaculatory duct prostatic urethra membranous urethra | back 29 a |
front 30 All EXCEPT which of the following statements about a vasectomy are true? It is only about 10% reversible. It is a highly effective method of birth control. It is a minor surgical procedure. The part of the ductus deferens that lies in the scrotum is cut. | back 30 a |