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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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