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Bio 224 > Lecture 8 > Flashcards

Lecture 8 Flashcards

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Biology 101 flashcards
1
Q

Gonads are derived from:

A

Intermediate mesoderm

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2
Q

Specialized collecting tube in the developing human female that runs from the ovary to the cloaca:

A

Paramesonephric duct

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3
Q

Serial homolog of scrotal sac:

A

Skin

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4
Q

Serial homolog of dartos muscle:

A

Superficial fascia

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5
Q

Serial homolog of external spermatic fascia:

A

External oblique

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6
Q

Serial homolog of cremaster muscle:

A

Internal oblique

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7
Q

Serial homolog of internal spermatic fascia:

A

Transversus abdominus

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8
Q

Serial homolog of tunica vaginalis:

A

Coelom + peritoneum

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9
Q

Anchors testis to scrotal wall:

A

Gubernaculum

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10
Q

A very narrow slit that guards against herniation to the gut tube:

A

Inguinal canal

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11
Q

Spermatic cord loops _____ to the attachment of the ureter of the bladder

A

Ventral (in front of)

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12
Q

How many pouches do females have?

A

2

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13
Q

How many pouches do males have?

A

1

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14
Q

2 pouches in the female:

A

Vesicouterine and Rectouterine

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15
Q

Pouch in the male:

A

Rectovesicle

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16
Q

Specialized erectile tissue develops from:

A

Mesoderm

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17
Q

Erectile tissue closer to midline:

A

Right and left BULB

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18
Q

Erectile tissue more laterally:

A

Right and left CRUS

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19
Q

Subdivides the cloaca in a rectum and a bladder:

A

Urogenital diaphragm

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20
Q

In the male, right and left bulbs fuse in the midline to form:

A

Corpora spongiosum

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21
Q

In the male, right and left crura form:

A

Corpora cavernosa

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22
Q

In the female, the bulbs of the vestibule become:

A

Labia minora

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23
Q

Ovaries are derived from:

A

Intermediate mesoderm

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24
Q

Testes are derived from:

A

Intermediate mesoderm

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25
Q

Ureter is derived from:

A

Endoderm

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26
Q

Bladder is subdivision of:

A

Hindgut

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27
Q

Testes/gonads are:

A

Retroperitoneal

28
Q

Coelomic space on right and left side of scrotal sac is:

A

Primarily retroperitoneal

29
Q

Ovaries are secondarily:

A

Intraperitoneal

30
Q

What passes through inguinal canal?

A

Spermatic cord, blood vessels out and in

31
Q

What tube gives rise to the uterus?

A

Paramesonephric duct

32
Q

Paramesonephric duct becomes:

A

Fallopian tubes

33
Q

Pouch between bladder and uterus:

A

Vesicouterine

34
Q

Pouch between rectum and uterus:

A

Rectouterine

35
Q

Surrounds the urethra and makes up the head or glans of the penis:

A

Corpora spongiosum

36
Q

In the female, right and left crus becomes:

A

Labia majora

37
Q

Inner perineal muscle in both male and female:

A

Bulbospongiosus

38
Q

Outer perineal muscle in both male and female:

A

Ischiocavernosus

39
Q

Perineal muscle that connects to Rafae (alba):

A

Ischiocavernosus

40
Q

Go through meiosis and make sperm cells:

A

Spermatogenic cells

41
Q

Keep spermatogenic cells alive:

A

Sustentacular cells

42
Q

Tip of sperm used to penetrate egg:

A

Acrosomal cap

43
Q

Prostate gland secretes:

A

Fructose

44
Q

Cells that secrete testosterone:

A

Interstitial cells

45
Q

Into a tube:

A

Exocrine

46
Q

Into a blood vessel:

A

Endocrine

47
Q

Erection has a ______ function

A

Parasympathetic

48
Q

Ejaculation has a ______ function

A

Sympathetic

49
Q

Orgasm has a ________ function

A

Sympathetic and parasympathetic

50
Q

Ovaries start:

A

Retroperitoneal

51
Q

What part of the follicle in a female secretes estrogen and progesterone?

A

Corpus luteum

52
Q

1st step of uterine cycle

A

Hypothalamus releases GnRH that stimulates anterior pituitary gland to release FSH and LH

53
Q

What does the hypothalamus release as the first step?

A

Gonadotropin-releasing hormone

54
Q

2nd step of uterine cycle

A

FSH stimulates maturation of follicle

55
Q

3rd step of uterine cycle

A

Follicle produces estrogen;

Builds uterine wall, turns off FSH

56
Q

Where is the biggest spike of LH in the whole cycle?

A

4th step

57
Q

4th step of uterine cycle

A

High levels of estrogen stimulates secretion of LH

58
Q

What step of uterine cycle does the egg leave the fallopian tube and become exposed for fertilization?

A

4th step

59
Q

Ovulation is accompanied by:

A

LH spike

60
Q

5th step of uterine cycle

A

Corpus luteum secretes estrogen and progesterone; turns off LH

61
Q

6th step of uterine cycle

A

Estrogen and progesterone levels drop as corpus luteum degenerates to corpus albicans

62
Q

7th step of uterine cycle

A

Break down of endometrium; tissue and blood loss is known as menstruation

63
Q

8th step of uterine cycle

A

Low LH causes secretion of FSH again; cycle repeats itself

64
Q

What hormone does the placenta secrete?

A

Human Chorionic Gonadotropin

65
Q

What inhibits the corpus luteum from wearing out?

A

hCG

Bio 224 (8 decks)

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