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Science 7th grade > Reproduction System > Flashcards

Reproduction System Flashcards

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1
Q

7th Grade Reproduction

Reproduction is essential to what?

A

the survival of the species

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2
Q

7th Grade Reproduction

What is reproduction NOT essential to?

A

the survival of the individual

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3
Q

7th Grade Reproduction

What is reproduction?

A

the process through which living things produce new individuals of the same kind

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4
Q

7th Grade Reproduction

What kind of specialized cells does the reproductive system produce, store, nourish, and release?

A

sex cells

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5
Q

7th Grade Reproduction

sperm

A

male sex cell

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6
Q

7th Grade Reproduction

egg (ovum)

A

female sex cell

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7
Q

7th Grade Reproduction

fertilization

A

when the sperm and egg unite

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8
Q

7th Grade Reproduction

Where are chromosomes located?

A

in each cell of the body

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9
Q

7th Grade Reproduction

How many chromosomes do normal cells contain?

A

46

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10
Q

7th Grade Reproduction

How many chromosomes do sex cells contain?

A

23

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11
Q

7th Grade Reproduction

zygote

A

a fertilized egg that contains 46 chromosomes

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12
Q

7th Grade Reproduction

What is produced after fertilization that causes development of specific reproductive organs?

A

hormones

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13
Q

7th Grade Reproduction

testes

A

male reproductive organ

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14
Q

7th Grade Reproduction

Where are the testes located?

A

in the scrotum

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15
Q

7th Grade Reproduction

What is the role of the testes?

A

they produce sperm

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16
Q

7th Grade Reproduction

Why is it important that the testes are not located within the body cavity?

A

sperm cannot be produced and are destroyed at 98.6 degrees (normal body temperature)

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17
Q

7th Grade Reproduction

Where does sperm travel after it is produced?

A

through the vas deferens

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18
Q

7th Grade Reproduction

What is mixed with sperm in the vas deferens?

A

semen

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19
Q

7th Grade Reproduction

urethra

A

the duel purpose tube through which sperm (mixed with semen) travel

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20
Q

7th Grade Reproduction

penis

A

where the sperm exits the body

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21
Q

7th Grade Reproduction

testosterone

A

the male hormone that is produced in the testes

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22
Q

7th Grade Reproduction

What is the hormone testosterone responsible for?

A

facial and body hair, broadening the chest, a deeper voice

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23
Q

7th Grade Reproduction

ovaries

A

the female reproductive organ

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24
Q

7th Grade Reproduction

Where are the ovaries located?

A

at the hip level, one on each side

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25
# 7th Grade Reproduction What is the role of the ovaries?
they produce an egg (ova)
26
# 7th Grade Reproduction Where are all female reproductive parts located?
WITHIN the female body
27
# 7th Grade Reproduction What releases the egg?
ovaries
28
# 7th Grade Reproduction Once the egg is released from the ovaries, where does it go?
the fallopian tubes (oviduct)
29
# 7th Grade Reproduction After leaving the fallopian tubes, where does the egg go?
uterus (womb)
30
# 7th Grade Reproduction Where does a fertilized egg develop?
in the uterus
31
# 7th Grade Reproduction cervix
an opening at the mouth of the uterus
32
# 7th Grade Reproduction vagina
birth canal
33
# 7th Grade Reproduction What is the path that the egg travels?
fallopian tubes-uterus-cervix-vagina
34
# 7th Grade Reproduction What is the path that the sperm travels?
testes-vas deferens-urethra-penis
35
# 7th Grade Reproduction estrogen
a female hormone produced in the ovaries
36
# 7th Grade Reproduction What is the job of estrogen?
it is responsible for broadening the hips, enlarging the breasts, and the maturation and release of eggs
37
# 7th Grade Reproduction About how often does a menstrual cycle occur?
monthly
38
# 7th Grade Reproduction About how long does a menstrual cycle last?
28 days
39
# 7th Grade Reproduction What is the purpose of the menstrual cycle?
to prepare the uterus for a fertilized egg
40
# 7th Grade Reproduction What occurs during days 1-4 of the cycle?
menstrual discharge
41
# 7th Grade Reproduction What occurs during days 5-13 of the cycle?
egg matures inside the ovary
42
# 7th Grade Reproduction What occurs during days 14-15 of the cycle?
ovulation
43
# 7th Grade Reproduction ovulation
when the egg is released from the ovary
44
# 7th Grade Reproduction What occurs during days 16-22 of the cycle?
the egg travels through the fallopian tube toward the uterus
45
# 7th Grade Reproduction What occurs during days 23-28 of the cycle?
1. fertilized egg imbeds in the side of the uterus OR 2. unfertilized egg is released through mensturation
46
# 7th Grade Reproduction When is the only time an egg can be fertilized?
during ovulation
47
# 7th Grade Reproduction When does ovulation occur?
about 14 days after the start of menstruation
48
# 7th Grade Reproduction A baby is born about how many months after fertilization?
9
49
# 7th Grade Reproduction What is the first step in development before birth?
zygote (fertilized egg with 46 chromosomes)
50
# 7th Grade Reproduction embryo
1st-8th week of development before birth
51
# 7th Grade Reproduction amniotic sac
fluid-filled sack that cushions and products baby throughout development
52
# 7th Grade Reproduction placenta
connects baby to mother and provides nourishment, respiration, and excretion
53
# 7th Grade Reproduction From what is a placenta formed?
it develops from embryonic tissue and tissue from the uterus
54
# 7th Grade Reproduction fetus
a baby from the 8th week until it is born
55
# 7th Grade Reproduction What occurs during a baby's 1-3 months of development?
all internal organs develop, eye patches form
56
# 7th Grade Reproduction What occurs during a baby's 4-6 months of development?
skeleton forms, heartbeat can be heart with a stethoscope, weight is about 1.5 pounds
57
# 7th Grade Reproduction What occurs during a baby's 7-9 months of development?
lungs mature; body increases 4 times in size
58
# 7th Grade Reproduction umbilical cord
connects fetus to the placenta...has 2 arteries and 1 vein
59
# 7th Grade Reproduction amniocentesis
a test where a small amount of amniotic fluid is removed with a needle and is used to test a child's genetic make-up
60
# 7th Grade Reproduction What occurs during labor?
strong muscular contractions begin...baby is pushed through the cervix at 10 cm
61
# 7th Grade Reproduction About how long can labor last?
2-20 hours
62
# 7th Grade Reproduction During the delivery, what part of the baby generally comes out first
head
63
# 7th Grade Reproduction How long can delivery last?
from several minutes to several hours
64
# 7th Grade Reproduction Why does a baby cry when it is first born?
to expand its lungs
65
# 7th Grade Reproduction What happens during the 3rd stage of birth?
the placenta is delivered
66
# 7th Grade Reproduction How long does infancy occur?
from about 1 month-2 years
67
# 7th Grade Reproduction How big is a baby's head during infancy?
about 1/4 the size of its body
68
# 7th Grade Reproduction At what age can a baby generally hold up its head?
3 months
69
# 7th Grade Reproduction At what age can a baby generally begin to crawl?
5 months
70
# 7th Grade Reproduction At what age can a baby generally grasp objects?
7 months
71
# 7th Grade Reproduction At what age can a baby generally walk
10-12 months
72
# 7th Grade Reproduction How long does childhood last?
from 2-13 years
73
# 7th Grade Reproduction What develops for a child during childhood?
mental ability increases, memory strengthens, muscular development, language skills, social appropriate behavior
74
# 7th Grade Reproduction When does adolescence occur?
at about 13 years old
75
# 7th Grade Reproduction What is adolescence?
the passage from childhood to adulthood
76
# 7th Grade Reproduction What does adolescence mean in Latin?
to grow up
77
# 7th Grade Reproduction puberty
when sexual organs begin to develop
78
# 7th Grade Reproduction What occurs during puberty to girls?
menstruation begins
79
# 7th Grade Reproduction What occurs during puberty to boys?
sperm is produced
80
# 7th Grade Reproduction How much do girls grow during a typical growth spurt between ages 10-16
6 inches, 35 pounds
81
# 7th Grade Reproduction How much do boys grow during a typical growth spurt between ages 11-17
8 inches, 44 pounds
82
# 7th Grade Reproduction When does adulthood begin?
around age 20
83
# 7th Grade Reproduction adulthood
when all systems are fully developed
84
# 7th Grade Reproduction How does a person's body develop during adulthood?
fat moves farther away from the skin, face has more definition
85
# 7th Grade Reproduction When does aging start on a body?
around age 30
86
# 7th Grade Reproduction What happens to a body during aging?
skin looses elasticity, eyes lose ability to focus, hair loses color, muscular strength decreases
87
# 7th Grade Reproduction menopause
females stop menstruation and ovulation

Science 7th grade (8 decks)

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