|
In these Anatomy sections, new terms
or the names of new body parts will have Leading Caps to
emphasize to the reader their significance. Be sure you
know what each term or part is as you read through the
material. |
Ovulation is the term that
describes the action of the Ovary releasing an Egg or Ovum. This
occurs each 'month', and in this case, a 'month' is the number of
days that pass between the beginning of a Menstrual flow and the
beginning of the next flow. The 'average' 'month' is 28 1/2 days and
is usually between 21 and 36 days. Rare cases can be more and can be
less.
The Menstrual Cycle refers
to what happens during that 'month' to a woman's body. The sole
purpose of the Menstrual Cycle is processing the Ovum or Egg that is
produced every 'month', from being released from the Ovary to being
sent on its way with the Menstrual flow, and then preparing the
woman's body for the release of the next Egg.
Starting at Day 1:
-
A total of about 1/2 cup of blood,
tissue (Uterine lining), and the unfertilized ovum will exit the Uterus through
the Os of the Cervix and then the Vagina.
-
It will flow for 3 - 5
days (up to 7 days). No, not a full flow of blood... it will be
much less each day. It should not total more than about 1/2 to a
full cup, spread out over the full flow time.
-
Most women today absorb the
flow with an absorbent cotton tampon placed temporarily in the
vagina. Other materials may be used that may not contain
chemicals, or even a type of cup that merely contains the fluid
and is removed from the Vagina and drained. The tampon must be exchanged for a fresh tampon several times a
day during the heavy part of the flow to prevent Toxic Shock
Syndrome (blood poisoning). External Sanitary Napkins can also
be used. They do not enter the vagina, and are suspended against
the Vulva and accomplish the same result, but are more bulky.
Starting at Day 14:
-
An Ovum is released from
one of the Ovaries. The Ovaries usually take turns releasing an
Ovum on alternate months, but both may each release one the same month.
-
The Ovum is trapped by
the fringed, larger end (Fimbria) of the Fallopian Tube
(Oviduct), and it starts its journey down the Oviduct to the
Uterus. Hair-like Cilia inside the Oviduct help urge the Egg to
move toward the Uterus.
-
During these few days,
if Sperm is waiting in the Oviduct, it will attempt to fertilize
the Egg. That Sperm had to have entered the Vagina, Cervix,
Uterus and eventually the Oviduct within seven days of when it
fertilizes the Egg.
-
If two Eggs are released
and both are
fertilized, they will grow to be "Fraternal" twins and may be
either sex.
-
The opening in the
Cervix (Os) will close with a mucus plug, allowing no more Sperm
access to the Uterus, and allowing the Uterus to be
filled with blood in preparation of the fertilized Egg.
-
The Ovum or Egg is the
largest cell of the body, and Sperm are so small, hundreds can
surround the Egg at one time. One of them will fertilize the Egg
and all the rest will back off.
-
Any Sperm deposited
during Coitus after this closure will die and be ejected from
the Vagina. If the Egg is to be fertilized this 'month', the
Sperm that will fertilize it is already waiting in the Fallopian
Tube for the release of the Egg.
-
When the
fertilized Egg enters the Uterus from the Fallopian Tube, it will float to the wall of the Uterus, which has
prepared itself to accept the fertilized Egg.
Day 28:
-
If the Egg was
fertilized and it attached to the wall of the Uterus, the
Menstrual cycle STOPS, and Pregnancy has started.
-
If the Ovum did not
implant into the Uterine wall, the Os of the Cervix will now open and
Menstrual cycle will begin again.
The woman's first ever
Ovulation and Menstrual Flow is referred to as Menarche, and is one
of three indicators of the start of Puberty, and it usually occurs
around 12.7 years of age, give or take three to six years. It is
beneficial for a woman to remember the date of, or what her age is when she
has
her Menarche as it is significant for doctors to know in later
years. Menstruation will continue to happen every 'month' until Menopause,
which averages around 45 to 55 years old. The 'month' may be somewhat
irregular for the first few years after Menarche. When a young girl
is extremely physically active, such as a professional-level gymnast
or skater, her Menarche may be postponed a year or two, and if she
is already menstruating, she will likely miss or skip a Period or two.
Excess body fat encourages Menarche and lean body weight will
discourage it.
The Menstrual Cycle stops
when implantation of the fertilized Egg occurs, and will return at
about 6 weeks after delivery of the baby. If the woman is
exclusively breastfeeding the child, her period may wait as much as
two years to restart, if she breastfeeds that long. That is NOT a reliable
method of Birth Control at all. During Biblical days, it was common
for a two-year spacing to occur between childbirth, and this is
thought to be due to all women back then breastfeeding their infants
for at least a year.
During pregnancy, a woman
might actually continue to have a very light menstrual flow during
the first part of a pregnancy. Some may actually continue through
the entire pregnancy. ANY BLEEDING DURING PREGNANCY should be
brought to the attention of your doctor immediately. TODAY!
A woman will likely experience
Abdominal Cramps before or during her Period. They are usually
severe muscle contractions of the Uterus, caused by hormones, and
may be treated with medications from the doctor. Minor cramps are
usually helped with Aspirin, and exercise may be of some help. The
Menstrual Pains are thought to be a practice run of the Uterus getting ready for
Labor Pains.
|