BMS100 Past Test Questions
Chapter 19, Spring 2009
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- Seminiferous tubules are located in _?_ and they produce _?_.
- testes / sperm
- testes / sperm and hormones
- seminal vesicles / seminal fluid
- the prostate gland / seminal fluid
- The main reason for the "descent of the testes" is to bring the testes into an environment that has
- a higher temperature
- a lower temperature
- a higher pH
- a lower pH
- The "head" of a mature sperm cell contains
- a nucleus with 46 chromosomes
- an acrosome that contains enzymes used to penetrate into the "egg"
- microtubules that use ATP to slide past each other
- all of the above
- none of the above
- Given the following key:
1 = urethra,
2 = epididymis,
3 = vas deferens;
what is the correct sequence through which sperm would pass after being produced in a testis?
- 1 - 2 - 3
- 2 - 1 - 3
- 2 - 3 - 1
- 3 - 1 - 2
- 3 - 2 - 1
- Because of the secretions of the _?_, semen is normally _?_.
- prostate gland / neutral
- seminal vesicles / weakly acidic
- interstitial cells / alkaline
- seminal vesicles / alkaline
- Which statement is true?
- The seminal vesicles and the prostate gland produce most of the seminal fluid (fluid portion of semen).
- Sperm are mixed with seminal fluid while in a testis.
- Sperm are mixed with seminal fluid after passing through a vas deferens.
- A and B
- A and C
- "Ovulation" refers to the release of _?_ from a(n) _?_.
- LH / pituitary gland
- secondary oocyte / ovarian follicle
- progesterone / corpus luteum
- endometrium / uterine wall
- The normal site of fertilization of an ovum ("egg") is
- secondary follicle of ovary
- "outer part" of uterine tube
- cervical canal of uterus
- "functional layer" of endometrium
- Which statement is true of the endometrium of the uterus?
- the basal layer grows from the functional layer
- the functional layer grows from the basal layer
- the functional layer may be shed as the menses ("menstrual flow")
- both A. and C.
- both B. and C.
- Cilia are abundant in the
- ovarian follicles
- uterine tubes
- cervical canal
- vagina
- all of the above
- The corpus luteum is derived from
- the posterior pituitary gland prior to ovulation
- an ovarian follicle following ovulation
- an oocyte ("egg") that was not penetrated by a sperm
- the "basal layer" of the endometrium of the uterus
- The vaginal pH of approximately 4.2 is
- beneficial to sperm and inhibitory to most microorganisms
- harmful to sperm and inhibitory to most microorganisms
- temporarily neutralized by semen following intercourse
- A and C
- B and C
- Which statement is false?
- Luteinizing hormone (LH) is a gonadotropin.
- Follicle-stimulating hormone (FSH) is a gonadotropin.
- FSH and LH are secreted by the pituitary gland.
- Males normally do not produce follicle-stimulating hormone (FSH).
- Effects of testosterone include
- stimulating release of gonadotropins from the pituitary gland
- stimulating development of male reproductive organs
- causing male secondary sex characteristics (not directly necessary for reproduction)
- both A. and B.
- both B. and C.
- Given the following key:
- 1 = estrogen causes thickening of endometrium of uterus
- 2 = luteinizing hormones causes rupture of an ovarian follicle
- 3 = follicle-stimulating hormone causes development of an ovarian follicle
What is the correct sequence of events in one ovarian cycle?
- 1 - 2 - 3
- 2 - 1 - 3
- 2 - 3 - 1
- 3 - 1 - 2
- 3 - 2 - 1
- The corpus luteum
- is derived from the wall of an ovarian follicle
- exists in an ovary for a limited time following ovulation
- secretes progesterone and other hormones
- all of the above
- none of the above
- When are progesterone levels the highest in a woman who is not pregnant?
- during menstruation
- during a "surge" that occurs prior to ovulation
- during the latter part of week 3 of the ovarian cycle
- during the latter part of week 4 of the ovarian cycle
- True or false? If a woman is not pregnant, then progesterone has little or no effect on her body.
- True.
- False.
- Human chorionic gonadotropin (hCG)
- is normally produced by the pituitary gland and it promotes development of the placenta
- is normally produced by the endometrium and it causes the "basal layer" to produce more tissue
- is normally produced by the remains of the ovarian follicle and it
causes the pituitary gland to start a new ovarian cycle
- is normally produced by an embryo and it causes to ovary to
maintain the progesterone level
- Which one of the following does not belong with the others?
- ovulation
- menstruation
- LH surge (LH spike)
- days 13-14 of a 28 day cycle
- The hormones that are most directly responsible for physical maturation are
- testosterone (in males) and estrogens (in females)
- testosterone (in males) and progesterone (in females)
- luteinizing hormone (in males) and follicle stimulating hormone (in females)
- luteinizing hormone (in males) and human chorionic gonadotropin (in females)