Save
Chapter 9
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Kate Prevot
Visit profile
Cards (63)
What is sexual reproduction?
Fusion of two
gametes
producing unique
offspring
View source
What is a key advantage of sexual reproduction?
Increases
genetic variation
View source
What is a disadvantage of sexual reproduction?
Requires a
sexual
partner
View source
How does sexual reproduction help populations?
Decreases
whole
population
vulnerability
to
diseases
View source
What is asexual reproduction?
Involves
one
parent producing
identical
offspring
View source
What is a key advantage of asexual reproduction?
Faster
growth in a
population
View source
What is a disadvantage of asexual reproduction?
Decreases
genetic variation
View source
What happens during fertilisation?
Fusion
of
male
and
female
gametes
to form a
zygote
View source
What type of cells are gametes?
Haploid
cells with
unpaired
chromosomes
View source
How many chromosomes do human gametes have?
23
chromosomes
View source
What is the ploidy of a zygote?
Diploid
with
paired
chromosomes
View source
What is the female gamete called?
Ovum
View source
What is the largest cell in the human body?
The
ovum
View source
What is the function of the ovum's cytoplasm?
Food
source for the
developing
embryo
View source
What is the male gamete called?
Sperm
View source
What is a unique feature of sperm cells?
Has a long
tail
for
mobility
View source
What is the role of mitochondria in sperm cells?
Powers the
movement
of the
sperm
View source
What is the function of the cap in sperm cells?
Contains
enzymes
to digest the
ovum's coating
View source
What are the structures and functions of the male reproductive system?
Testis
: Produces
sperm
and
hormones
Sperm
duct: Transports
sperm
Seminal glands
: Secretes
nutrients
for
semen
Penis
: Directs
urine
and
semen
out
Urethra
: Exits for
urine
and
semen
View source
What are the structures and functions of the female reproductive system?
Ovary
: Contains
follicles
and produces
hormones
Oviduct
: Connects
ovary
to
uterus
; site of
fertilisation
Uterus
: Where
zygote
implants and
develops
Cervix
: Keeps
fetus
in place during
gestation
Vagina
: Receives
semen
during
intercourse
View source
What is the menstrual cycle?
A
recurring
process preparing for
pregnancy
View source
What are the four key hormones involved in the menstrual cycle?
FSH
Oestrogen
LH
Progesterone
View source
What does FSH do in the menstrual cycle?
Stimulates maturation of
follicle
and
ovum
View source
What is the role of oestrogen in the menstrual cycle?
Stimulates
thickening
of the
uterus lining
View source
What does LH do in the menstrual cycle?
Stimulates
ovulation
and
progesterone
production
View source
What is the role of progesterone in the menstrual cycle?
Maintains
thickened
lining of the
uterus
View source
What are the steps of sexual reproduction in humans?
Sperm
and
egg
produced by
meiosis
Sperm
travels through
sperm duct
Semen
ejaculated
into
vagina
Sperm swims to
oviducts
Fertilisation
occurs if
egg
is present
Zygote
implants into
uterus
lining
Embryo
develops a
placenta
Placenta
connects to mother via
umbilical cord
View source
What are the roles of the placenta?
Provides
nutrients
, oxygen, and
waste removal
View source
What is the amniotic fluid's purpose?
Protects the
fetus
against movements
View source
What is testosterone's role in males?
Triggers
development
of
secondary
sexual
characteristics
View source
What are some
secondary
sexual characteristics in males?
Growth of
facial hair
and
voice
changes
View source
What is oestrogen's role in females?
Triggers development of
secondary sexual characteristics
View source
What are some secondary sexual characteristics in females?
Development of
breasts
and
wider hips
View source
At what age do secondary sexual characteristics typically develop in males?
Between
ages 9-15
View source
At what age do secondary sexual characteristics typically develop in females?
Between
ages 8-14
View source
What happens to the placenta after birth?
It is delivered during
afterbirth
View source
Why do fetal and maternal blood never mix?
To prevent
immune system
recognition of
fetus
View source
Where does the exchange of materials occur in the placenta?
In the
intervillous space
View source
What is the composition of amniotic fluid during early pregnancy?
Mostly
water
View source
What is the composition of amniotic fluid later in pregnancy?
Mostly
urine
, some
hormones
and
nutrients
View source
See all 63 cards
See similar decks
Chapter7
Jane Eyre
6 cards
Chapter5
Jane Eyre
7 cards
Chapter 3🇺🇸
47 cards
chapter 4
DT
6 cards
chapter 5
DT
142 cards
chapter 3
anglo saxon and norman england
66 cards
Chapter 4
Untitled
21 cards
Chapter 2
32 cards
chapter 9 - timber
DT
73 cards
Chapter2
Jane Eyre
7 cards
Chapter 4🇺🇸
25 cards
Chapter 4
71 cards
Chapter 2
RE
39 cards
Chapter4
Jane Eyre
6 cards
Chapter 9
RE
61 cards
chapter 2
DT
37 cards
Chapter 2
English
6 cards
Bio chapter 18
86 cards
Chapter9
Jane Eyre
6 cards
Chapter3
Jane Eyre
8 cards
Chapter 1
Sports Studies
47 cards