BIOL 2402
BIOL 2402 Exam 4 Study Questions and
Answers Graded A+ 2025
Gonads -Correct Answer ✔Testes or ovaries.
Gonads -Correct Answer ✔Produce gametes exocrinally and produce hormones
endocranially.
Scrotum -Correct Answer ✔An out-pouching of the abdominopelvic cavity
epithelium, connective tissue and some muscle.
Below -Correct Answer ✔Production and survival of sperm requires a temperature
______ body temperature.
Cremaster Muscles -Correct Answer ✔Elevate the scrotum, allowing the testes to
absorb more heat.
Tunica Albuginea -Correct Answer ✔Connective tissue which covers the testes.
Lobules -Correct Answer ✔Extensions of the tunica albuginea divide each testis
into 200-300 ______.
Seminiferous Tubule -Correct Answer ✔Tightly coiled tubule inside each lobule of
the testes.
Seminiferous -Correct Answer ✔The ______ tubules are where sperm are
produced.
Spermatogenesis -Correct Answer ✔The sequence of events in the seminiferous
tubules which result in the production of haploid spermatozoa from spermatogonia.
BIOL 2402
,BIOL 2402
Spermatogonia -Correct Answer ✔Diploid stem cells at the beginning of
spermatogenesis.
Interstitial Cells -Correct Answer ✔Found between seminiferous tubules; produce
and secrete testosterone.
Testosterone -Correct Answer ✔Produced by the interstitial cells between
seminiferous tubules.
Sustentacular Cells -Correct Answer ✔Protect/nourish the developing sperm and
create a blood/testes barrier.
Blood/Testes Barrier -Correct Answer ✔Isolates the sperm from coming in contact
with blood, because leukocytes would attack sperm.
Spermatogonia -Correct Answer ✔Developmental stage of sperm cells found next
to the basement membrane of a seminiferous tubule.
Lumen -Correct Answer ✔The diploid spermatogonia divide (by mitosis)
producing 2 diploid cells, one remains by the basement membrane and one moves
toward the ______ of the tubule.
Primary Spermatocyte -Correct Answer ✔Diploid spermatocyte, after mitosis of
spermatogonia, but before meiosis.
Secondary Spermatocyte -Correct Answer ✔Haploid spermatocyte resulting from
meiosis of primary spermatocyte.
Spermatids -Correct Answer ✔Secondary spermatocytes divide again, they
become ______.
Acrosome -Correct Answer ✔An organelle on the head of sperm containing
enzymes released to dissolve a passage into the ovum.
BIOL 2402
, BIOL 2402
Flagella -Correct Answer ✔Whip-like swimming tail of the sperm, surrounded by
mitochondria.
Mitochondria -Correct Answer ✔ATP factories around the flagella of sperm.
Nucleus -Correct Answer ✔Portion of the sperm which contains the haploid
genetic material.
300 million -Correct Answer ✔Sperm are produced at a rate of ______ per day.
Ductus Epididymis -Correct Answer ✔The spermatozoa move from the
seminiferous tubule to the next and larger tube, the ______.
20 days -Correct Answer ✔It takes about ______ for sperm to travel the length of
the ductus epididymis.
Motility -Correct Answer ✔During the time the sperm move through the ductus
epididymis, they mature and gain ______.
60 days -Correct Answer ✔Sperm can be stored in the ductus epididymis for up to
______.
Epididymis -Correct Answer ✔If sperm are not used, they are
phagocytized/reabsorbed by the lining of the ______.
Ductus Deferens -Correct Answer ✔If ejaculation occurs, the walls of the ductus
epididymis contract and expel the sperm into the next segment, the ______.
Ductus Deferens -Correct Answer ✔Runs from epididymis up into the pelvic
cavity, over the bladder and into the prostate gland.
BIOL 2402
BIOL 2402 Exam 4 Study Questions and
Answers Graded A+ 2025
Gonads -Correct Answer ✔Testes or ovaries.
Gonads -Correct Answer ✔Produce gametes exocrinally and produce hormones
endocranially.
Scrotum -Correct Answer ✔An out-pouching of the abdominopelvic cavity
epithelium, connective tissue and some muscle.
Below -Correct Answer ✔Production and survival of sperm requires a temperature
______ body temperature.
Cremaster Muscles -Correct Answer ✔Elevate the scrotum, allowing the testes to
absorb more heat.
Tunica Albuginea -Correct Answer ✔Connective tissue which covers the testes.
Lobules -Correct Answer ✔Extensions of the tunica albuginea divide each testis
into 200-300 ______.
Seminiferous Tubule -Correct Answer ✔Tightly coiled tubule inside each lobule of
the testes.
Seminiferous -Correct Answer ✔The ______ tubules are where sperm are
produced.
Spermatogenesis -Correct Answer ✔The sequence of events in the seminiferous
tubules which result in the production of haploid spermatozoa from spermatogonia.
BIOL 2402
,BIOL 2402
Spermatogonia -Correct Answer ✔Diploid stem cells at the beginning of
spermatogenesis.
Interstitial Cells -Correct Answer ✔Found between seminiferous tubules; produce
and secrete testosterone.
Testosterone -Correct Answer ✔Produced by the interstitial cells between
seminiferous tubules.
Sustentacular Cells -Correct Answer ✔Protect/nourish the developing sperm and
create a blood/testes barrier.
Blood/Testes Barrier -Correct Answer ✔Isolates the sperm from coming in contact
with blood, because leukocytes would attack sperm.
Spermatogonia -Correct Answer ✔Developmental stage of sperm cells found next
to the basement membrane of a seminiferous tubule.
Lumen -Correct Answer ✔The diploid spermatogonia divide (by mitosis)
producing 2 diploid cells, one remains by the basement membrane and one moves
toward the ______ of the tubule.
Primary Spermatocyte -Correct Answer ✔Diploid spermatocyte, after mitosis of
spermatogonia, but before meiosis.
Secondary Spermatocyte -Correct Answer ✔Haploid spermatocyte resulting from
meiosis of primary spermatocyte.
Spermatids -Correct Answer ✔Secondary spermatocytes divide again, they
become ______.
Acrosome -Correct Answer ✔An organelle on the head of sperm containing
enzymes released to dissolve a passage into the ovum.
BIOL 2402
, BIOL 2402
Flagella -Correct Answer ✔Whip-like swimming tail of the sperm, surrounded by
mitochondria.
Mitochondria -Correct Answer ✔ATP factories around the flagella of sperm.
Nucleus -Correct Answer ✔Portion of the sperm which contains the haploid
genetic material.
300 million -Correct Answer ✔Sperm are produced at a rate of ______ per day.
Ductus Epididymis -Correct Answer ✔The spermatozoa move from the
seminiferous tubule to the next and larger tube, the ______.
20 days -Correct Answer ✔It takes about ______ for sperm to travel the length of
the ductus epididymis.
Motility -Correct Answer ✔During the time the sperm move through the ductus
epididymis, they mature and gain ______.
60 days -Correct Answer ✔Sperm can be stored in the ductus epididymis for up to
______.
Epididymis -Correct Answer ✔If sperm are not used, they are
phagocytized/reabsorbed by the lining of the ______.
Ductus Deferens -Correct Answer ✔If ejaculation occurs, the walls of the ductus
epididymis contract and expel the sperm into the next segment, the ______.
Ductus Deferens -Correct Answer ✔Runs from epididymis up into the pelvic
cavity, over the bladder and into the prostate gland.
BIOL 2402
