BSC 216 Exam 4 Questions and Answers Already Passed

BSC 216 Exam 4 Questions and Answers Already Passed Mature sperm are stored in the ___ for 40-60 days. If they are not used during this time they will be reabsorbed. - Answers epididymis What structure of the female reproductive anatomy is homologous to the scrotum of males? - Answers labia majora The SRY gene on the Y chromosome codes for the protein _____, which initiates the development of the testes. - Answers testes determining factor (TDF) At 8-9 weeks, ____ is secreted to develop the mesonephric ducts into the male anatomy. - Answers testosterone Give the proper order for the path of a sperm from its initial development to the ductus (vas) deferens. - Answers seminiferous tubules, rete testes, efferent ductules, epididymis, ductus deferens During the emission stage of male orgasm, _____ signals stimulate peristalsis to propel sperm through the ducts. - Answers sympathetic The absence of ____ is the main factor that controls the development of the female gonads. - Answers androgen hormones (testosterone) What structure acts to regulate temperature in the scrotum by relaxing to suspend the testes further from the body? - Answers Cremaster muscle Spermatogonia undergo mitosis to give rise to Type A and Type B daughter cells. What happens to the Type B daughter cells? - Answers They are destined to become sperm What are the steps of spermatogenesis in the correct order? - Answers Type B daughter cell, growth, primary spermatocyte, meiosis I, secondary spermatocyte, meiosis II, spermatids The bulbourethral gland produces ? - Answers clear slippery secretion that neutralizes acidity of leftover urine in the male urethra After leaving the ductus (vas) deferens, sperm travels through the last three structures in what order? - Answers ampulla, ejaculatory duct, urethra What occurs during spermiogenesis (the production of tailed sperm)? - Answers mitochondria multiply and accumulate high numbers in the sperm The main outcome of meiosis is: - Answers the production of haploid gametes that are genetically different from one another What is the main hormone that stimulates milk production for breast feeding? - Answers prolactin An example of a primary sex organ would be: - Answers testes When a sperm encounters an egg, it first penetrates the ___ and then the ___ of the oocyte (egg). - Answers granulosa cells, zona pellucida Sperm penetration into the egg releases an inflow of ____ that causes the fast block (depolarization of the egg membrane). - Answers sodium (Na+) During cleavage, the blastocyst is formed around day 5. What layer of the blastocyst will form the embryonic disk and differentiate into the three primary germ layers (what layer is destined to become the embryo)? - Answers inner cell mass- embryoblast During implantation of the blastocyst into the uterine wall, the blastocyst (specifically the