PHYS 261 FINAL EXAM QUESTIONS AND
ANSWERS
Which embryonic structure gives rise to the seminal vesicles and vas deferens during fetal
differentiation into a male?
a. Bipotential gonad
b. Wolffian duct
c. Müllerian duct
d. Kidney b. Wolffian duct
Opsonins function by
a. poisoning and killing invading cells, marking or tagging pathogens so phagocytes can find and
ingest them, and digesting invading cells directly.
b. poisoning and killing invading cells and marking or tagging pathogens so phagocytes can find
and ingest them.
c. poisoning and killing invading cells.
d. digesting invading cells directly.
e. marking or tagging pathogens so phagocytes can find and ingest them. e. marking or
tagging pathogens so phagocytes can find and ingest them.
The first phase of the ovarian cycle is the __________ phase.
,a. luteal
b. secretory
c. ovulation
d. follicular d. follicular
In the follicular phase of the ovarian cycle, the ovary is
a. maturing a follicle.
b. forming a corpus luteum.
c. secreting progesterone.
d. releasing a mature egg.
e. undergoing atresia. a. maturing a follicle.
Immunoglobulins that attach to mast cells and are involved in allergic reactions are
a. IgA.
b. IgD.
c. IgE.
d. IgG.
e. IgM. c. IgE.
A zygote with the genotype YO will
, a. develop into a female.
b. have Kleinfelter's syndrome.
c. have Turner's syndrome.
d. die.
e. develop into a male. d. die.
The hormone mainly responsible for the milk let-down reflex is
a. prolactin.
b. progesterone.
c. estrogen.
d. growth hormone.
e. oxytocin. e. oxytocin.
When the immune system creates a response that is out of proportion to the threat it has been
exposed to, the response is called an
a. allergy or hypersensitivity reaction.
b. immunodeficiency.
c. autoimmune response. a. allergy or hypersensitivity reaction.
Stem cells that will form T lymphocytes mature in the
ANSWERS
Which embryonic structure gives rise to the seminal vesicles and vas deferens during fetal
differentiation into a male?
a. Bipotential gonad
b. Wolffian duct
c. Müllerian duct
d. Kidney b. Wolffian duct
Opsonins function by
a. poisoning and killing invading cells, marking or tagging pathogens so phagocytes can find and
ingest them, and digesting invading cells directly.
b. poisoning and killing invading cells and marking or tagging pathogens so phagocytes can find
and ingest them.
c. poisoning and killing invading cells.
d. digesting invading cells directly.
e. marking or tagging pathogens so phagocytes can find and ingest them. e. marking or
tagging pathogens so phagocytes can find and ingest them.
The first phase of the ovarian cycle is the __________ phase.
,a. luteal
b. secretory
c. ovulation
d. follicular d. follicular
In the follicular phase of the ovarian cycle, the ovary is
a. maturing a follicle.
b. forming a corpus luteum.
c. secreting progesterone.
d. releasing a mature egg.
e. undergoing atresia. a. maturing a follicle.
Immunoglobulins that attach to mast cells and are involved in allergic reactions are
a. IgA.
b. IgD.
c. IgE.
d. IgG.
e. IgM. c. IgE.
A zygote with the genotype YO will
, a. develop into a female.
b. have Kleinfelter's syndrome.
c. have Turner's syndrome.
d. die.
e. develop into a male. d. die.
The hormone mainly responsible for the milk let-down reflex is
a. prolactin.
b. progesterone.
c. estrogen.
d. growth hormone.
e. oxytocin. e. oxytocin.
When the immune system creates a response that is out of proportion to the threat it has been
exposed to, the response is called an
a. allergy or hypersensitivity reaction.
b. immunodeficiency.
c. autoimmune response. a. allergy or hypersensitivity reaction.
Stem cells that will form T lymphocytes mature in the
