packet 27 chapter 27 Flashcards


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1

One division consisting of prophase, metaphase, anaphase, and telophase.

mitosis

2

Produces haploid cells.

meiosis

3

Produces cells for growth and tissue repair

mitosis

4

Occurs in two stages

meiosis

5

Forms tetrads.

meiosis

6

Produces four daughter cells.

meiosis

7

Human papillomavirus

genital warts

8

Treponema pallidum.

syphilis

9

Urethritis in males.

gonorrhea

10

Human herpes virus type 2

genital herpes

11

Organism responsible for up to half of the diagnosed cases of pelvic inflammatory disease.

chlamydia

12

The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following is true about the role they play?

they regulate the temperature of the testes

13

The ability of sperm cells to move along the ductus deferens is due to ________.

peristaltic contractions

14

The ability of a male to ejaculate is due to the action of ________.

the bulbospongiosus muscles

15

The most important risk for testicular cancer in young males is ________.

undescended testes

16

Which of the following glands are responsible for 70% of the synthesis of semen?

the seminal vesicles

17

Which of the following hormones controls the release of anterior pituitary gonadotropins?

GnRH

18

The "master switch" for male reproductive development is ________.

the SRY gene

19

The primary function of the uterus is to ________.

receive, retrain, and nourish a fertilized ovum

20

Why is the blood-testis barrier important?

because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system

21

The structures that receive the ovulated oocyte, providing a site for fertilization, are called the ________.

fallopian tubes

22

If gametes were diploid like somatic cells, how many chromosomes would the zygote contain?

twice the diploid number, and with every succeeding generation, the chromosome number would continue to double and normal development could not occur

23

Human egg and sperm are similar in that ________.

they have the same number of chromosomes

24

The constancy of the chromosome number from one cell generation to the next is maintained through ________.

meiosis

25

Fertilization generally occurs in the _______

fallopian tubes

26

Spermiogenesis involves the ________.

formation of a functional sperm by the stripping away of superfluous cytoplasm

27

Which of the following female structures is homologous to the male scrotum?

labia majora

28

In humans, separation of the cells at the two-cell state following fertilization may lead to the production of twins, which in this case would be ________.

identical

29

How do the testes respond to exposure to excessive body warmth?

They move away from the pelvic cavity

30

Effects of estrogen include ________.

growth of the breasts at puberty

31

Secretion of progesterone stimulates ________.

preparation of the mammary glands for lactation

32

Which of the following statements about sperm is not true?

The sperm midpiece consists of mitochondria spiraled tightly around the contractile filaments of the tail.

33

The cells that produce testosterone in the testis are called ________.

interstitial endocrine cells

34

The testicular cells that construct the blood-testis barrier are the ________.

sustentocytes

35

Which of the following occurs as a result of undescended testes?

Inadequate or nonviable sperm will be produced.

36

Erection of the penis results from ________.

a parasympathetic reflex

37

Which is not a part of the proliferative phase of the female menstrual cycle?

corpus luteum

38

Which of the choices below is not a function of the vagina?

serves as a passageway for the primary oocyte

39

Select the correct statement about male sexual response.

Erection is the result of vascular spaces in the erectile tissues filling with blood

40

Which of the choices below is not a function of testosterone?

stimulates mammary gland development

41

Which male hormone inhibits the secretion of FSH?

inhibin

42

During the secretory phase of the menstrual cycle ________.

progesterone levels are at their highest

43

Select the correct statement about the uterine cycle.

If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.

44

Which of the choices below is not a part of the hypothalamic-pituitary-gonadal axis?

thalamus

45

Which of the following statements is true concerning the mammary glands of both males and females?

The mammary glands are modified sweat glands that are actually part of the integumentary system.

46

Normally menstruation occurs when ________.

blood levels of estrogen and progesterone decrease

47

The basic difference between spermatogenesis and oogenesis is that ________.

in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell

48

Occasionally three polar bodies are found clinging to the mature ovum. One came from an unequal division of the ovum, but from where did the other two arise?

The first polar body has also divided to produce two polar bodies.

49

Which of the following will occur after ovulation?

The endometrium enters its secretory phase.

50

Why doesn't semen enter the urinary bladder during ejaculation?

The smooth muscle sphincter at the base of the urinary bladder closes.

51

Why doesn't semen enter the urinary bladder during ejaculation?

involves a kind of cell division limited to the gametes

52

Which hormone is absolutely necessary for ovulation to occur?

LH

53

The hypothalamic-pituitary-gonadal axis ________.

involves FSH and LH release

54

Select the correct statement about testosterone control.

GnRH from the hypothalamus causes FSH and LH release from the anterior pituitary.

55

Which of the following is a correct statement about uterine tubes?

The infundibulum is the funnel-shaped region near the ovary.

56

Select the correct statement about the hormonal events of the ovarian cycle.

High estrogen levels result in a surge of LH release.

57

Which of these statements about sexually transmitted infections is false?

Syphilis is caused by a virus that may lead to death if untreated.

58

Which of the following statements about spermatogenesis is not true?

Each spermatid forms two sperm.

59

A boy who has not passed through puberty sustains an injury to his anterior pituitary such that FSH is no longer released, but LH is normal. After he grows to maturity, one would expect that he would ________.

be unable to produce viable sperm

60

Which of the following statements about the female reproductive process is not true?

Rebuilding the endometrium is under the control of prolactin

61

A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________.

decreased testosterone secretion

62

) All of the following statements referring to the uterine cycle are true except ________.

FSH and LH directly promote development of the uterine endometrium

63

Which of the following phases or processes in the monthly reproductive cycle of the female occur simultaneously?

regression of the corpus luteum and a decrease in ovarian progesterone secretion

64

The duct system of the male reproductive system includes all but which of the following?

corpus spongiosum

65

Prostate cancer is ________.

sometimes a slow-growing cancer that may never represent a threat to the patient

66

The ______ plexus of testicular veins assists in cooling the testis.

pampiniform

67

Surgical cutting of the ductus deferens as a form of birth control is called a?

vasectomy

68

The erectile tissue around the urethra is the corpus ________

spongiosum

69

The midpiece of the sperm tail contains mostly _____.

mitochondria

70

The _____ of the testis nourish the newly formed sperm cells.

sustenocytes

71

A suspensory ligament and mesovarium are part of the ____ ligament.

broad

72

A follicle with only a small antrum in it would be classified as a ______ follicle.

secondary

73

The portion of the uterine endometrium that is not sloughed off every month is called the ______.

stratum basalis

74

Treponema palledium causes the sexually transmitted disease called _____.

syphilis