19 Reproductive (Lecture) 8 Flashcards Preview

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Flashcards in 19 Reproductive (Lecture) 8 Deck (92):
1

Puberty marks

reproductive maturity M-12yo F-11yo

2

Adolescence marks

mental maturity F18-20 M?

3

somatic cells contain

a full compliment of chromosomes

4

Sex Chromosomes

X & Y are the 23rd

5

Female chromosomes

XX

6

Male chromosomes

XY

7

Barr bodies

X chromosome goes dormant

8

Autosomes are the ____________chromosomes

Non sex chromosomes

9

gametes are

Sex cells

10

Gametes contain how many chromosomes

23

11

Meiosis is?

cell division that reduces chromosome numbers by half

12

Testes

gamets found here

13

Spermatozoa=

Sperm

14

Where does Meiosis occur?

Ovaries

15

Oocyte=

egg

16

Polar bodies=

the eggs that die

17

How many eggs does a 5mo gestation female have?

6-7 million

18

How many eggs does a new born female have?

2 million

19

How many eggs does a female at puberty have?

300,000

20

What is the scrotum comprised of

it is a fibro muscular sack holds testes

21

Testes are

internal genitailia

22

*Seminiferous tubules are located where?

they are ducts inside the testes

23

*Seminiferous tubules are comprised of two types of cells...

Spermatogonia and Nurse cells

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*Spermatogonia cells...

are stem cells the produce new male sperm cells (sex cells are dormant (non-swimming)

25

*Nurse cells...

produce blood teste barrier. No blood is allowed in this area

26

Blood testis barrier

WBC's would destroy spem cells

27

Seminiferous fluid

produced by nurse cells carry sperm

28

Interstitial cell of the testes

makes testosterone

29

The Male duct system includes

Epididymis, Spermatic cord, Ductus deferens, Ampulla, Ejaculatory duct, Inguinal canals, Urethra

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Epididymis does what

Stores inactive sperm cells

31

Spermatic cord

connects testes to male pelvis

32

Ductus deferens has two parts

Ampulla thick distal end & the Ejaculatory duct which passes through the prostate sperm cells only enter during ejactulation.

33

Inguinal canals

openings that allow testes out of male pelvis

34

Urethra Male

common passage for urine and sex cells.

35

When do sperm cells begin swimming?

When the come in contract with fructose

36

Seminal vesicles

deposite 60% of volume of semin

37

Prostate gland contributes

30% of the volume of semen and a substance that prevents UTI

38

Bulbourethral glands contribute

5% of the volume of semen and an alkaline mucus that stabilizes the pH of the urethra.

39

Seminal Fluid

from glands not including sperm cells

40

Semen

seminal fluid including sex cells

41

Male Hormones

FSH, LH, Testosterone

42

FSH male

comes from anterior pituitary stimulates production of sperm cells.

43

LH male

stimulates release of testosterone

44

Testosterone male

responsible for primary and secondary sex characteristics

45

Cortex of an ovary

outter edge contains eggs

46

Oocytes=

eggs

47

Follicle

surrounds and protects an egg. It is the follicle that expands and grows not the egg

48

Medulla of ovary

no eggs in the medulla

49

Ovarian ligament

attaches the ovary to the uterus

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Suspensory ligament

attaches ovary to abdominal wall

51

*Ampulla (latin for flask) of fallopian tube (oviduct)

second portion of the fallopian tube. It is an intermediate dilated portion, which curves over the ovary. It is the most common site of fertilization.

52

Oviducts =

Fallopian tube

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*Fimbriae

a fringe of tissue around the lateral end of the Fallopian tube. catches a released egg

54

*Infundibulum

infundibulum is between the ampulla and the fimbriae.
Together, the infundibulum and fimbria find the oocyte after ovulation.

55

*Isthmus

visible medial third of the uterine tube is the isthmus of uterine tube.

56

Cilia inside the fallopian tube

create a current the egg rides on

57

Peristalsis of the fallopian tube

contractions of smooth muscle push the egg along

58

Uterus has three layers

Perimetrium, Myometrium, Endometrium

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Perimetrium

surrounding connective tissue

60

Myometrium

muscle layer

61

Endometrium

layer that grow every month part of this layer is shed every month.

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Fornix of Uterus (The word 'fornix' is Latin for 'arch')

The fornices uterus are the deepest portions of the vagina, extending into the recesses created by the vaginal portion of cervix.

63

Round ligament

connects uterus to anterior pelvis

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Uteralsacral ligament

connects uterus to sacrum

65

Broad ligament has 3 parts

Mesovarium, Mesosalpinx, Mesometrium

66

Mesovarium

ligament around ovary

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Mesosalpinx

ligament around fallopian tube

68

Mesometrium

connects to uterus

69

pudendum

the external genital organs of a human being and especially of a woman

70

Mons veneris

this is where round ligament attaches to uterus

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Labia majora

the rest of the round ligament attaches here

72

Labia minora

protects the vestibule

73

The vestibule =

Transistion zone

74

Urethral orifice

opening for urine

75

vaginal orifice

opening to birth canal

76

hymen

thin covering of skin

77

vestibular gland ostia

opening to vestibular gland

78

Introitus

birth canal only

79

vestibular glands

mucus making

80

lactiferous lobes (mammary glands) have

alveoli, laterferous ducts, and suspensatory ligaments

81

Mammary Alveoli

hollow spheres that make milk

82

lactiferous ducts

transport milk toward nipple

83

Suspensory ligaments

attach mammary glands to chest wall

84

Prolactin

responsible for production of milk

85

Oxytocin

release of milk during nursing the let down reflex

86

Pre ovulation cycle

first 14 days

87

*Estrogen

gives females primary and secondary sex characteristics

88

Ovulation

release of an egg from a follicle occurs around day 14

89

Menstruation

marks the beginning of the cycle

90

Proliferative phase

when endomytrium is regrowing

91

*Corpus luteum is

an empty follicle

92

*Corpus albicans is

scar leftover from inactive luteum