### process:

Menstruation
* also appears to last a similar length of time.
* always follows ovulation.
* begins in puberty and ends with menopause
  - when the eggs in a female s ovaries begin to mature
* big event in a young girl's life.
* causes biological and physical changes in a girl s body.
* ceases after intense or prolonged emotional stress or trauma
  - or, in the case of a boy, there is loss of sexual drive and impotence
* ceases, and absorption of iron increases.
* commonly occurs at the seventh or eighth week.
* continues longer in robust, healthy women.
* cool part of some woman's life.
* is almost unique to human beings and a few other primates
  - also about birth
* is an example of a condition subject to widespread taboos
  - intermediate event in the developmental process
  - caused by changes in hormones
  - controlled by a series of hormonal interactions between the brain and the ovaries
  - discharge
  - fluid movement
  - in progress, with breakdown of surface tissue
  - influenced by socio economic factors, climate, heredity, family size and nutrition
  - looked upon as a normal, healthy function
  - merely a pale fluid or a little leucorrhea
  - more cushy today because of modern hygienic products and drugs against ache
* is part of a woman's reproductive cycle
  - the regular process that prepares a woman's body each month for pregnancy
  - seen as unclean and women are often barred from certain activities each month
  - supposed to be a natural event
* is the discharge of blood and sometimes tissue through the vagina
  - major biological process which facilitates reproduction
  - origin of language
  - process in which the endometrium of the is shed from the body
* is the shedding of a bloody fluid from the uterus or womb
  - the endometrial lining
  - sloughing off of the uterine lining that builds up during the previous month
  - time during a woman's natural cycle when bleeding occurs from the vagina
  - what makes human life possible
* lasts from puberty to menopause.
* lunar process , it is connected and influenced by the moon and the lunar phases.
* major source of curiosity for both boys and girls.
* monthly cycle that prepares a woman's body for possible pregnancy
  - fact of life for half of the humans on the planet
* natural physiological condition for a woman.
* occurs about nine days after detumescence begins, and lasts for about three days
  - after the secretion of progesterone stops
  - when one of the eggs in the ovaries is released
* often stops, even before extensive weight loss.
* poses no risk to others.
* prepares the breasts and ovaries for potential pregnancy.
* starts when a female has reached sexual maturity.
* stops, and many women with endometriosis feel much better while they are pregnant.
* usually has a negative connotation to it
  - lasts between three and seven days

### process | menstruation:

Irregular menstruation
* has three main types.
* is common in young women and most likely reflects irregular ovulation.

Recurrent menstruation
* can have serious adverse health consequences.
* is unnecessary and can be harmful to the health of women.

Metabolic process
* All metabolic processes slow down to as little as one-twentieth of the normal rate.
* Many metabolic processes are brought about by the action of enzymes
  - take place in the cytosol
* Some metabolic processes occur only in selected groups of microorganisms, termed functional groups.