Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Baby Bio > Chap 30 Animal Reproduction and Development > Flashcards

Chap 30 Animal Reproduction and Development Flashcards

(70 cards)

Start Studying
1
Q

Animal development begins with what?

A

reproduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the shared features of all multicellular life?

A

reproduction and development

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are sex cell that meet in fertilization?

A

gametes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The what of a sperm enters an egg a fuzes with what of an egg?

A

haploid nucleus of sperm

haploid nucleus of egg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are male gonads?

A

the testes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many testes do males have?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the sac that holds the testes?

A

the scrotum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Why are the testes located outside the abdominal cavity?

A

to allow for temperature regulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When does sperm development (spermatogenesis) begin?

A

at puberty

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where are male germ cells formed?

A

in the developing fetus (they stay inactive inside the testes until puberty)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When does spermatogenesis occur?

A

begins at puberty and continues constantly throughout adulthood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Sperm are adapted for what?

A

swimming and fertilizing eggs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does each mature sperm cell contain?

A

haploid nucleus
long flagellum
mitochondria
caplike acrosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the caplike acrosome do on a sperm cell?

A

helps it penetrate the egg cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What influences male reproductive function?

A

hormones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are female gonads?

A

ovaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How many ovaries in a female?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where are the ovaries located?

A

inside the body cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Each ovary is surrounded by finger like extensions of a what leading to where?

A

uterine tube

uterus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Egg development (oogenesis) is similar to what?

A

spermatogenesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Secondary oocytes do what?

A

rupture the follicle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Meiosis I produces two haploid cells what are they?

A

large secondary oocyte

polar body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The secondary oocyte is from the ovary to the uterine tube, what is this process called?

A

ovulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

The polar body contains almost no what?

A

cytoplasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What influences female reproductive function?
hormones
26
Hormonal fluctuations produce two what?
interrelated cycles
27
What are the two interrelated cycles?
ovarian cycle | menstrual cycle
28
The ovarian cycle is regulated by what hormones?
FSH (follicle-stimulating hormone) LH (luteinizing hormone)
29
The menstrual cycle is regulated by what hormones?
estrogen | progesterone
30
What stops the cycle?
a zygote
31
If pregnancy occurs the zygote divides in the uterine tubes and develops into a what?
blastocyst
32
Where does the blastocyst go?
it implants itself in the thickened endometrium
33
What does the blastocyst do?
secretes human chorionic gonadotropin
34
What does human chorionic gonadotropin do?
prevents regression of the corpus luteum
35
What keeps the endometrium intact?
continues progesterone production
36
When can conception occur?
as soon as an ovary releases an egg
37
How long can sperm survive inside the female reproductive tract?
a few days
38
Can ovaries release multiple eggs at different times?
yes
39
When does the fertile period begin?
five days before ovulations
40
How long does the fertile period last?
3-4 days after ovulations
41
Hormone contraception does what?
prevents reproduction
42
What are the types of hormonal contraceptives?
``` pills patched vaginal rings injections implants ```
43
How do hormonal contraceptives work?
they contain synthetic forms of progesterone and therefore prevents ovulation
44
What are the most effective methods of contraception?
surgery | intrauterine devices
45
What can be transmitted during sex?
diseases
46
Contraception is not generally intended to prevent what?
STDs
47
The spread of STDs can be prevented or decreased with what?
use of latex condoms only one sexual partner vaccinations (only for some) abstinence
48
When does the zygote divide for the first time?
24 hours after fertilization
49
When the zygote fist divides is begins a period of rapid mitotic cell division called what?
cleavage
50
What happens around day 7 after fertilization?
the blastocyst (or pre-embryo at this time) becomes embedded in the endometrium
51
Where does the blastocyst obtains nutrients?
the uterine lining
52
What begins after implantation?
the embryonic
53
When does the embryonic stage start?
3 weeks
54
In the embryonic stage the embryo produces what?
structures that support its development
55
What are the strictures formed by the embryo?
chorionic villi | amniotic cavity
56
What does the chorionic villi do?
projects into the uterine lining and exchange nutrients with maternal blood
57
What does the amniotic cavity have/do?
fluid that cushions the embryo and maintains constant temperature and pressure
58
The chorionic villi will eventually develop into what?
the placenta
59
During what stage does organ formation occur?
embryonic stage
60
When do sex differneces become apparent
between 7-9 weeks after fertilization
61
When does the fetal stage begin?
at week 9
62
What happens in the fetal stage?
organs become functional bones replace cartilage nerves and muscles begin to coordinate actions
63
What matures near the end of pregnancy?
the digestive and respiratory systems neural connections from in the brain
64
When does birth occur?
around 38 weeks
65
What are the 3 steps of childbirth
labor delivery uterus expels the placenta
66
What happens in labor?
the amniotic sac breaks hormones prompt uterine muscle contractions the baby's head presses against and opens the cervix
67
What happens in delivery?
the baby descends through the vagina
68
How long do humans develop before birth?
9 months
69
A fetus born before when is not viable?
22 week (after this time the chance of survival increases)
70
When is birth considered premature?
if it occurs before 35 weeks (about 8 months) of gestation

Baby Bio (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions