chapter 27 ,28 Flashcards


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1

which of the followings glands are responsible for 60% of stythesis of semen

the seminal vesicle

2

which hormone control the release of of anterior pituitary gonadotropins

GnRH

3

Developments of male reproductive structure depends on what events

secrete of the male hormones prenatally and lasting into the first few months after birth

4

the primary function of the uterus is to

receive,retain,and nourish a fertilized ovum

5

why is blood testis barrier important?

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

6

the structure that receive the ovulates oocyte providing site for fertilization are the

fallopian tubes

7

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

8

human eg and sperm are similar in that

they have same number of chromosomes

9

the dartos and cremaster muscles are important to the integrity of the male reproductive system

they regulate the temperature of the testes

10

the ability of sperm cells to move along the ducts deferens is due to

peristaltic contractions

11

the ability of a male to ejaculate is due to the action of

the bulbospongiosus muscle

12

the most important risk for testicular cancer in young males

sexually transmitted infections

13

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

meiosis

14

Fertilization generally occurs in the

fallopian tubes

15

spermiogenesis involves the

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

16

all of the following can be considered male secondary sex characteristics except the

development of testes as opposed the ovaries

17

in human separation of the cell as the two cell states following fertilization may lead to production of twins which in this case would be

identical

18

characteristics of the mature sperm includes the

presence of Y chromosomes in approximately half the sperm

19

how do the testes respond to exposure to excessive body warmth

the move away from the pelvic cavity

20

effects of estrogen include

growth of breast at puberty

21

secretion of progesterone stimulates

preparation of the mammary glands for lactation

22

Is not true about sperm

the sperm mid piece consists of mitochondria spiraled tightly around the contractile filaments of the tail.

23

the cells that produce testosterone in the testis are called

interstitial cells

24

the testicular cells construct the blood testis barrier are the

sustentacular cells

25

occurs as result of undescended testes

inadequate or nonviable sperm will be produced

26

erection of the penis results from

parasympathetic reflex

27

which is not a part of the proliferative phase of the female menstrual cycle

corpus luteum

28

is not a function of the vagina

serves as a passageway for the primary oocyte

29

Male sexual response

erection is the result of vascular spaces in the erectile tissues filling with.

30

Is not a function of testosterone

stimulate mammary glands development

31

male hormone inhibits the secretion of FSH

inhibin

32

during the secretory phase of menstual cycle

progesterone levels are at their highest

33

Uterine cycle

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

34

is not part of the brain testicular axis

thalamus

35

the mammary glands of males and females

are modified sweat glands that are actually part of the integumentary system

36

menstruation occurs when

blood levels of strogen and progesterone decrease

37

difference between spermatogenesis and oogenesis is that

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

38

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

the first polar body has also divided to produce two polar bodies

39

occurs after ovulation

the endometrium enters its secretory phase

40

semen doesnt enter the urinary bladder during ejaculation

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

41

spermatogenesis

involves a kind of cell division limited to the gametes

42

hormone absolute necessary for ovulation to occur

LH

43

the brain testicular axis

involves FSH and LH release

44

testoterone control

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

45

Uterine tubes

the infundibulum is the funnel shaped region near the ovary

46

hormonal events of ovarian cycle

high estrogen levels result in surge of LH release

47

False statement about sexual transmitted infections

syphilis is caused by a virus that may lead the death if untreated

48

Is not true about spermatogenesis

each spermatid forms two sperms

49

boy who have not passed trough puberty sustain a injury in pituitay gland. FSH not release but LH normal

Be steril

50

is not true about female reproductive process

rebuilding the endometrium secretion is under the control of prolactin

51

low secretion of luteinizing hormones LH in normal male adult would cause

decrease testosterone secretion

52

Not true about uterine cycle

FSH and LH directly promote development of the uterine endometrium

53

phases or processes in h monthly reproductive cycle of the female occur simultaneously

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

54

the duct system of the male reproductive system does not include

corpus spongiosum

55

ovulating oocyte is activated by hormones

110 days before ovulation

56

prostate cancer

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

57

cells on the dorsal surface of the two layered embryonic disc migrate to migrate to form a raised groove known as the

primitive streak

58

the result of polyspermy in humans is

a nonfunctional zygote

59

it is impossible for sperm to be functional until after

undergo capacitation

60

milk ejection or letdown reflex is stimulated by what hormone

oxytocin

61

prepare mammary glands to secrete

corpus luteum

62

the placenta is made of a contribution from mother and fetus . which is from fetus

chorion

63

Hormone relaxing function

relax pubic symphysis

64

how proteases and acrosin function in reproduction

they act to break down the protective barriers around the eggs allows sperm to penetrate

65

not a germ layer

epiderm

66

formation of endodermal and ectodermal germ layers occur at

gatrulation

67

hormone maintains viability of the corpus luteum

human chorionic gonadotrpin

68

unlikely method of producing a child

ectopic implatation

69

Not correct matching of a fetal structure with what it becomes a birth

ductus arteriosus ligamentum teres

70

implantetion involves

embedding of the blastocyst in the uterine wall

71

the umbilical arteries carry

waste products to the placenta

72

sequence of preembryonic

zygote morula blastocyst

73

Not assessed as part of the apgar score

temperature

74

hormone for lactation

oxytocin

75

initially embryo obtain nutrition by

digestion of endometrial cells

76

doesnt onset labor

aspirin and similar drugs

77

fertilization

millions of sperms cells are destroyed by the vagina acidic environment

78

shortly after implantation

The trophoblast forms two distinct layers

79

the dorsal surface cells of the inner cell of inner cell mass form

the primitive streak

80

muscle tissue is form

mesoderm

81

neutral tissue is formed by the

ectoderm

82

the trophoblast is mostly responsible for forming

placenta tissue

83

cardiovascular system of newborn must be adjused after first breath also

the ductus arterioso constrict and is converted to ligament arteriosum

84

sperm movement

reverse peristalsis of the uterus and uterine tubes

85

after birth expelled

Placenta

86

Hormone not produce by placenta

inhibin

87

fetus is delivered

expulsion stage

88

implantation of the blastocyst is the result of all except

phagocytosis by the trophoblast cells

89

cleavage as part embryonic development involves

cell division by mitosis little no growth between

90

pass trough the placenta barries

nutrients respiratory gases wastes and alcohol

91

not a teratogen

apirin

92

derivatives of ectoderm

epithelium of the pineal and pituitary glands

93

derivatives of mesoderm

endothelium of blood and lymph vessel

94

derivatives of endoderm

epithelium of the respiratory track

95

developmental events during 9-12 weeks

sex

96

occurs in fertilization of the ovum occurs and implantation takes place

corpus luteum is maintained until the placenta takes over its hormones producing functions

97

fetal blood vessel

the umbilical vein becomes the ligament teres

98

is not true about fertilization event

the two pronuclei divide

99

the decidua basalis is

located between the developing embryo and the myometrium