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Chapter 25 Quiz 3
Final Practice
20
Biology
Undergraduate 2
05/10/2011

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Term
After ovulation, approximately halfway through the female menstrual cycle, levels of progesterone rise sharply. What is the primary function of progesterone at this point in the menstrual cycle?
Definition
to maintain the endometrial lining of the uterus, where a fertilized egg can implant
Term
A follicle cell that remains behind after ovulation:
Definition
develops into the corpus luteum.
Term
Which of the following is INCORRECT regarding meiosis in women?
Definition
Every oogonium produces four mature ova.
Term
The hormones present in birth control pills typically prevent pregnancy by:
Definition
preventing ovarian follicles from maturing.
Term
What process allows sperm to penetrate the zona pellucida surrounding the mature egg just before fertilization?
Definition
sperm bind to the zona pellucida, triggering the egg response to open its membrane like a gate
Term
Which of the following describes the three events in sperm production, from just after meiosis to deposition in the female reproductive tract?
Definition
maturation, storage and transfer, delivery
Term
The completion of meiosis II in the oocyte of human females occurs:
Definition
after the oocyte is fertilized by a spermatazoan
Term
In which stage in embryonic development are the germ layers created?
Definition
gastrulation
Term
What is colostrum?
Definition
the substance that is released when a woman first begins to lactate
Term
In which part of a sperm cell can mitochondria be found?
Definition
body
Term
In animals, the endoderm, mesoderm, and ectoderm are the types of:
Definition
germ layers.
Term
What is the most reliable signal that a woman is about to give birth?
Definition
dilation of the cervix up to about 10 cm
Term
Sperm are produced in the _______ and stored in the ________. They then travel into the penis through the ________ and are ejaculated through the ________.
Definition
seminiferous tubules; epididymis; vas deferens; urethra
Term
Your lungs are derived from which of the following embryonic germ layers?
Definition
the endoderm
Term
Tying off the vas deferens will:
Definition
None of the above.
Term
In what way does egg production differ from sperm production in humans?
Definition
Each egg is considerably larger than a sperm
Term
Which STDs can be treated with antifungal suppositories or creams?
Definition
yeast infections
Term
What is the main reason why ethical issues have arisen around human reproduction in the last decade?
Definition
Technology is making conception and pregnancy possible in many situations where they previously were not possible
Term
In the menstrual cycle of the human female, the direct response to the increase in the luteinizing hormone is:
Definition
ovulation.
Term
What structure in a sperm cell contains what might be called "a cap or bag containing digestive enzymes"?
Definition
acrosome
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