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- Amniotic Sac
- A bubble like sac that surrounds
the baby while it is inside of the mother's uterus. The
amniotic sac is filled with amniotic fluid. The unborn
baby is basically underwater for nine moths before it is
born!
- Anus
- The opening in the body through
which solid waste exits the body.
- Cervix
- The narrow end of the uterus which
has a small opening that connects the uterus with the
vagina.
- Conception
- The beginning of pregnancy, when
the sperm cell from the father joins with the egg cell
from the mother.
- Contractions
- The squeezing action of the
uterine muscle that helps to push the baby out of the mom
during the process of birth.
- Embryo
- The developing baby during the
first two months of pregnancy.
- Endometrium
- The inside lining of the uterus
made of tissue and blood.
- Ejaculation
- The process by which semen is
ejected from the penis.
- Epididymis
- A storage chamber in the male's
body that's attached to each testicle. This is where
sperm cells are nourished and mature.
- Erection
- The penis becomes stiff and hard
due to increased blood flow. Erections may happen in
response to physical or emotional stimulation, or
sometimes an erection happens for no reason at
all.
- Estrogen
- The main female sex hormone
produced by the ovaries.
- Fallopian
tubes
- Narrow tubes that are connected to
the uterus. The fringes of the fallopian tube catch the
egg cell when it is released from the ovary and then the
egg cell slowly travels from the ovary to the
uterus.
- Fertilization
- This is what happens when a male
sperm cell unites with a female egg cell. A fertilized
egg cell grows into a baby.
- Fetus
- The developing baby from two
months of pregnancy until birth.
- Genitals
- The external sex
organs.
- Hormones
- Chemical messengers created by
glands that control specific things that happen in the
body.
- Hypothalamus
- An area of the brain responsible
for controlling functions such as water balance, body
temperature, sleep, food intake, and the development of
the body during puberty.
- Menstruation
- The process by which the lining of
the uterus is shed periodically as menstrual flow. It
usually happens about once a month except during
pregnancy.
- Nocturnal
Emission
- An ejaculation of semen that
happens while a boy is sleeping. It is sometimes called a
"wet dream," and it's nature's way of making room for new
sperm cells that are made.
- Ovaries
- Two small organs inside of a
female's body where the egg cells are produced and
stored. Each ovary is about the size of a walnut, and
there is one on each side of the uterus. The ovaries also
produce the hormones estrogen and
progesterone.
- Ovulation
- The release of an egg cell by an
ovary. This process usually occurs at the midpoint of the
menstrual cycle.
- Ovum
- Another name for the female egg
cell. It is smaller than a grain of salt.
- Penis
- The male reproductive organ
involved in sexual intercourse and elimination of
urine.
- Period
- The days when menstruation is
taking place.
- Pituitary Gland
- A small gland at the bottom of the
brain which is responsible for controlling the hormones
that affect growth, metabolism and
maturation.
- Placenta
- A structure that grows from the
uterine wall that allows nutrients and oxygen from the
mom to pass through the umbilical cord to the baby and
waste products from the baby go back through the
umbilical to the placenta.
- Progesterone
- A female hormone.
- Prostrate Gland
- A male gland at the base of the
bladder. It contributes a thin, milky fluid that makes up
the largest part of the semen.
- Puberty
- The stage of growth where a
child's body turns into the body of an adult.
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Glossary
Q - Z
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