Reproduction Flashcards

1
Q

Sexual Reproduction

A

Essential for the survival of a species.

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2
Q

Meiosis

A

Going from 2N to N.

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3
Q

Oogenesis

A

Formation of 1 egg + 3 polar bodies.

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4
Q

Spermatogenesis

A

Formation of 4 sperm.

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5
Q

Oogonium

A

1st step in oogenesis. 2N before replication.

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6
Q

Primary Oocyte

A

2nd step in oogenesis. 4N after replication.

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7
Q

Secondary Oocyte

A

After the 1st meiotic division. 2N.

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8
Q

Ovum

A

Product of oogenesis, 1N.

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9
Q

Polar Body

A

Small N cell, cannot be fertilized.

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10
Q

Spermatogonium

A

Undifferentiated male germ cell.

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11
Q

Primary Spermatocyte

A

1st step in meiosis. 2N cell before replication.

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12
Q

Secondary Spermatocyte

A

2nd step in meiosis, 2N after replication.

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13
Q

Spermatide

A

Result of spermatogenesis.

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14
Q

Sperm

A

1N

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15
Q

External Fertilization

A

Sponges releasing sperm and egg into the environment.

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16
Q

Internal Fertilization

A

fertilization inside a body.

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17
Q

Protandry

A

when sex changes

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18
Q

Hermaphrodite

A

both sexes in one individual

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19
Q

Zona Pellucida

A

egg coat

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20
Q

Follicle Cells

A

functional unit of the ovary.

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21
Q

Acrosome

A

Head of the sperm which allows the sperm to penetrate the egg.

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22
Q

Head of Sperm

A

Contains DNA.

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23
Q

SRY Gene

A

male Y chromosome

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24
Q

Pre-Sertoli Cell

A

becomes a mature sertoli cell

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25
Q

Pre-Leydig Cell

A

becomes a mature lydig cell to make testosterone

26
Q

Pre-Follicular Cell

A

degenerates in males but becomes a follicle cell in females

27
Q

Pre-Gamete Cell

A

becomes spermatogonia (2N)

28
Q

Testosterone

A

steroid hormone

29
Q

Testis

A

site of production of steroid hormone and sperm

30
Q

Sperm

A

stored in the epididymis

31
Q

Scrotum

A

temp is 0.5 degrees lower than the body.

32
Q

Epididymis

A

stores sperm and transports to vas deferens.

33
Q

Vas deferens

A

carries the sperm out of the testes.

34
Q

Seminal vesicle

A

provides the seminal fluid, nutrients for sperm

35
Q

Bulbourethral Gland

A

secrete a mucus fluid to neutralize acidity of the vagina

36
Q

Seminal Fluid

A

nutrient for sperm

37
Q

Measles

A
38
Q

Urethra

A

connects to the vas deferens, through the shaft of the penis

39
Q

Corpora Cavernosa

A

part of the penis

40
Q

Corpora Spongiosum

A

part of the penis

41
Q

Parasympathetic Nervous System

A

induces erections

42
Q

Ovary

A

storage site for oocytes, site of production of estrogen and progesterone

43
Q

Estrogen

A

induces endometrial cells left after menses to divide and the endometrium is restored

44
Q

Progesterone

A

corpus luteum produces progesterone during titular phase

45
Q

Fallopian Tubes

A

where the egg is fertilized

46
Q

Uterus

A

where the embryo implants

47
Q

Vagina

A

where sperm are deposited

48
Q

Leydig Cell

A

releases testosterone

49
Q

Sertoli Cell

A

stimulates spermatogonium to undergo meiosis to make sperm

50
Q

Puberty

A

10-13

51
Q

Primary Follicle

A

stimulated by LH and FSH to produce estrogen

52
Q

Primary Oocyte

A

one being released?

53
Q

GnRH

A

stimulates anterior pituitary to release LH and FSH

54
Q

LH

A

stimulates leydig cell to release testosterone

55
Q

FSH

A

activates sertoli cell

56
Q

Endometrium

A

removed and built during periods

57
Q

Menses

A

periods

58
Q

Ovulation

A

releasing an egg from the follicle

59
Q

Corpus Luteum

A

produces progesterone during days 14-26

60
Q

Placenta

A

feeds baby

61
Q

Umbilical Cord

A

connects mother to baby

62
Q

Caesarian Section

A

cutting baby out