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Exam 20: The Reproductive System

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Question 1

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Indicate which item in the following answer code best matches the description in each question by writing the appropriate letter in the blank. -Formation is stimulated by LH after ovulation

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verified

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Question 2

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LH is responsible for

A) reinitiating meiosis in the oocytes of developing follicles
B) halting estrogen synthesis by the follicular cells
C) triggering ovulation
D) formation of the corpus luteum
E) all of the above

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Question 3

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The human testis contains many Leydig cells (interstitial cells) at various stages of differentiation, some of which have only half the normal number of chromosomes.

The ____________________ are the primary reproductive organs; in males they consist of a pair of ____________________ and in females a pair of ____________________.

Testosterone

Use this figure to answer the corresponding questions.Names and numbers can be used more than once. -The ____________________ (labeled # ____) and the ____________________ (labeled # ____) are lined with cilia that either help move items into or through part of the reproductive tract.

Which of the following is the proper sequence of the menstrual (uterine) cycle?

Prostaglandins are locally acting chemical messengers derived from the plasma-membrane component called ____________________.

Human chorionic gonadotropin

Indicate the chromosomal composition of each of the following stages of developing sperm by using the answer code below. a.Contains a full set of 23 pairs of chromosomes b.Contains a full set of 23 pairs of doubled chromosomes c.Contains a half set of doubled chromosomes d.Contains a set of 23 single unpaired chromosomes -Spermatid

The endometrium is the layer of smooth muscles of the uterus.

Indicate which description matches the item by writing the appropriate letter in the blank. a.Special milk produced during the first five days postpartum b.Evacuated from the uterus as "afterbirth" c.Super-rich endometrial tissue at the implantation site d.The two-cell layered trophoblastic tissue that forms the fetal portion of the placenta e.The intervening membrane between the developing oocyte and surrounding granulosa cells -Chorion

The plasma concentration of estrogen reaches a higher level during the follicular phase than during the luteal phase, despite the fact that the follicle and corpus luteum both secrete estrogen.

Human cells have 23 pairs of sex chromosomes.

Describe the regulation of the ovarian and uterine cycles.Include all stages of each cycle in your answer.

Which statement is correct?

The third and final stage of labor involves the actual birth of the baby.

Indicate which item in the following answer code best matches the description in each question by writing the appropriate letter in the blank. -Secretes estrogen and progesterone during the last seven months of gestation

Indicate which description matches the item by writing the appropriate letter in the blank. a.Special milk produced during the first five days postpartum b.Evacuated from the uterus as "afterbirth" c.Super-rich endometrial tissue at the implantation site d.The two-cell layered trophoblastic tissue that forms the fetal portion of the placenta e.The intervening membrane between the developing oocyte and surrounding granulosa cells -Placenta

In both sexes, the primary reproductive organs produce the reproductive cells, or ____________________, which are called ____________________ in the female and ____________________ in the male.