BSC 216 EXAM 4 QUESTIONS & ANSWERS
Mature sperm are stored in the ___ for 40-60 days. If they are not used during this time
they will be reabsorbed. - Answer -epididymis
What structure of the female reproductive anatomy is homologous to the scrotum of
males? - Answer -labia majora
The SRY gene on the Y chromosome codes for the protein _____, which initiates the
development of the testes. - Answer -testes determining factor (TDF)
At 8-9 weeks, ____ is secreted to develop the mesonephric ducts into the male
anatomy. - Answer -testosterone
Give the proper order for the path of a sperm from its initial development to the ductus
(vas) deferens. - Answer -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. - Answer -sympathetic
The absence of ____ is the main factor that controls the development of the female
gonads. - Answer -androgen hormones (testosterone)
What structure acts to regulate temperature in the scrotum by relaxing to suspend the
testes further from the body? - Answer -Cremaster muscle
Spermatogonia undergo mitosis to give rise to Type A and Type B daughter cells. What
happens to the Type B daughter cells? - Answer -They are destined to become sperm
What are the steps of spermatogenesis in the correct order? - Answer -Type B
daughter cell, growth, primary spermatocyte, meiosis I, secondary spermatocyte,
meiosis II, spermatids
The bulbourethral gland produces ? - Answer -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? - Answer -ampulla, ejaculatory duct, urethra
What occurs during spermiogenesis (the production of tailed sperm)? - Answer -
mitochondria multiply and accumulate high numbers in the sperm
The main outcome of meiosis is: - Answer -the production of haploid gametes that are
genetically different from one another
, What is the main hormone that stimulates milk production for breast feeding? - Answer
-prolactin
An example of a primary sex organ would be: - Answer -testes
When a sperm encounters an egg, it first penetrates the ___ and then the ___ of the
oocyte (egg). - Answer -granulosa cells, zona pellucida
Sperm penetration into the egg releases an inflow of ____ that causes the fast block
(depolarization of the egg membrane). - Answer -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)? - Answer -inner cell mass- embryoblast
During implantation of the blastocyst into the uterine wall, the blastocyst (specifically the
trophoblast) secretes the hormone ___, which stimulates the corpus luteum to produce
estrogen and progesterone. - Answer -human chorionic gonadotropin (HCG)
Which of the primary germ layers forms most of the mucosal epithelium of the
respiratory tract? - Answer -endoderm
The presence of all the organs at the end of _____ weeks marks the time when the
embryo becomes a fetus. - Answer -8
What is the only source of prenatal nutrition for the first week after implantation, and the
dominant source of nutrition through the end of 8 weeks? - Answer -trophoblastic
nutrition
The ____ secretes hormones and provides nutritional, excretory, and respiratory
functions. - Answer -placenta
What is the only form of prenatal nutrition before implantation of the blastocyst into the
uterine wall? - Answer -uterine milk
By the end of week ___ of prenatal development, the body of the fetus is covered with
lanugo and brown fat forms. - Answer -20
During the late follicular phase of the ovarian cycle, the developing follicle will secrete
more and more ____, which leads to a large surge of luteinizing hormone (LH) to help
complete ovulation. - Answer -follicle stimulating hormone (FSH)
____ is the midlife change in hormone secretion in females, which is accompanied by
___, the cessation of menstruation. - Answer -climacteric, menopause
Mature sperm are stored in the ___ for 40-60 days. If they are not used during this time
they will be reabsorbed. - Answer -epididymis
What structure of the female reproductive anatomy is homologous to the scrotum of
males? - Answer -labia majora
The SRY gene on the Y chromosome codes for the protein _____, which initiates the
development of the testes. - Answer -testes determining factor (TDF)
At 8-9 weeks, ____ is secreted to develop the mesonephric ducts into the male
anatomy. - Answer -testosterone
Give the proper order for the path of a sperm from its initial development to the ductus
(vas) deferens. - Answer -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. - Answer -sympathetic
The absence of ____ is the main factor that controls the development of the female
gonads. - Answer -androgen hormones (testosterone)
What structure acts to regulate temperature in the scrotum by relaxing to suspend the
testes further from the body? - Answer -Cremaster muscle
Spermatogonia undergo mitosis to give rise to Type A and Type B daughter cells. What
happens to the Type B daughter cells? - Answer -They are destined to become sperm
What are the steps of spermatogenesis in the correct order? - Answer -Type B
daughter cell, growth, primary spermatocyte, meiosis I, secondary spermatocyte,
meiosis II, spermatids
The bulbourethral gland produces ? - Answer -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? - Answer -ampulla, ejaculatory duct, urethra
What occurs during spermiogenesis (the production of tailed sperm)? - Answer -
mitochondria multiply and accumulate high numbers in the sperm
The main outcome of meiosis is: - Answer -the production of haploid gametes that are
genetically different from one another
, What is the main hormone that stimulates milk production for breast feeding? - Answer
-prolactin
An example of a primary sex organ would be: - Answer -testes
When a sperm encounters an egg, it first penetrates the ___ and then the ___ of the
oocyte (egg). - Answer -granulosa cells, zona pellucida
Sperm penetration into the egg releases an inflow of ____ that causes the fast block
(depolarization of the egg membrane). - Answer -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)? - Answer -inner cell mass- embryoblast
During implantation of the blastocyst into the uterine wall, the blastocyst (specifically the
trophoblast) secretes the hormone ___, which stimulates the corpus luteum to produce
estrogen and progesterone. - Answer -human chorionic gonadotropin (HCG)
Which of the primary germ layers forms most of the mucosal epithelium of the
respiratory tract? - Answer -endoderm
The presence of all the organs at the end of _____ weeks marks the time when the
embryo becomes a fetus. - Answer -8
What is the only source of prenatal nutrition for the first week after implantation, and the
dominant source of nutrition through the end of 8 weeks? - Answer -trophoblastic
nutrition
The ____ secretes hormones and provides nutritional, excretory, and respiratory
functions. - Answer -placenta
What is the only form of prenatal nutrition before implantation of the blastocyst into the
uterine wall? - Answer -uterine milk
By the end of week ___ of prenatal development, the body of the fetus is covered with
lanugo and brown fat forms. - Answer -20
During the late follicular phase of the ovarian cycle, the developing follicle will secrete
more and more ____, which leads to a large surge of luteinizing hormone (LH) to help
complete ovulation. - Answer -follicle stimulating hormone (FSH)
____ is the midlife change in hormone secretion in females, which is accompanied by
___, the cessation of menstruation. - Answer -climacteric, menopause
