Human Reproduction Flashcards
Ovaries
Store and release eggs
Fallopian tubes
Carry the egg to the uterus fertiliseariom occurs here
Uterus
Is where the fertilised egg becomes implanted and finds nourishment
Cervix
Leads from the vagina to the uterus
Vagina
Holds the male penuis during sexual intercorse
Ovulation
An egg is released from the ovary an average of every 28 days
The ens is released on day 13-15 of the monstrual cycle and it passes along the allopian tube to the uterus
Menstruation/period
The lining and a small amount of blood pass out through the vagina day 1-5
Menopausw
• Menopause: Signals the end of a female’s ability to reproduce and also the end of her menstrual cycle. It happens at different ages for different people, typically in the late 40’s to early 50’s.
Testies
The Testes produce sperm
scrotum
The scrotum is where the testes are, it is located outside the body to ensure the temperature is lower than body temperature for healthy sperm
epididymis
The epididymis is a coiled tube on the outside of each testis that stores sperm and allows them to mature fully.
vas deferens
• The vas deferens (sperm duct) brings the sperm from the testes to the penis
seminal vesicles, prostate gland and Cowper’s gland
The seminal vesicles, prostate gland and Cowper’s gland produce seminal fluid which mixes with sperm to form semen, it nourishes the sperm ge allow them to swim.
Penis
Penis enters the female and ejects sperm
Puberty
• Puberty describes when the body starts
becoming sexually mature (reproductive
organs develop). It normally happens
between the ages of 10 and 16
• Male puberty:
In males, sex hormones
(testosterone) are released causing the
voice to deepen, hair grows around the
sex organs, face, chest and underarms,
the testes and penis grow bigger and start
to produce sperm.
Female puberty
In females when the sex
hormones (oestrogen and progesterone)
are released the breasts develop, hips
widen, and hair begins to grow on the
body In females when the sex
hormones (oestrogen and progesterone)
are released the breasts develop, hips
widen, and hair begins to grow on the
body
• The first egg is released from the ovaries
which leads to the first period occurring
• An egg will be released every month until
the menopause
During intercourse the man’s
During intercourse the man’s penis fills
with blood and becomes hard enough to
be placed inside the woman’s vagina
semen
• A mixture of sperm cells and seminal fluid
called semen is released into the vagina
The sperm swim
The sperm swim up the uterus and into
the fallopian tubes
Fertilisation
Fertilisation: If an egg is present in the
fallopian tube, and a couple have sexual
intercourse, then one of the sperm cells
may fuse with it
• The nuclei of the sperm and egg fuse
together to form a fertilised egg
• The woman is now pregnant
Stages of baby development
Zygote → Embryo → Foetus
Zygote
Egg and sperm fuse to form a single