Thursday, January 1, 2009

Physiology of Female Design and Purpose

Women, on the average, have more stored and circulating white blood cells. They
have more granulocytes and B and T lymphocytes for fighting infection. They produce
more antibodies faster and thus have a more rapid and effective response to infectious invaders. They will develop fewer infectious diseases and succumb to them for shorter periods of time. Ethologists argue that for females caring for multiple offspring and interacting with other females and their offspring in social groups, where communicable diseases can spread rapidly, this is a particularly advantageous trait.

Women, whose metabolism favors fat storage, have more trouble eating enough to
maintain their needed vitamin and amino acid requirements without putting on fat as
well. There seems to be some relationship between a certain minimum level of body fat
and fertility in women. Women athletes, body builders, or those who are particularly thin have higher levels of infertility.11 It may be that a certain level of fat sufficient to carry the developing fetus and provide milk after birth is necessary before pregnancy will occur. This would be a logical, God-given feminine provision to prevent pregnancies during periods of unstable food supply or even famine.

Sex Differences in the Peripheral Nervous System
The ability to discriminate two simultaneous pin pricks placed at close proximity on
the skin is called the two-point discrimination test. Using this type of test, researchers find that women, on the average, have a more acute sense of touch. Females have finer body hair, on the average, which is more easily moved and results in finer sense perception. Females, likewise, have more acute senses of hearing, smell, and taste.14 It has been argued that females are generally more perceptive and aware of context. Perhaps their more responsive sensory system allows them to monitor their environment more completely and with more discrimination. Such a system would give women an advantage in child care and social interaction. They would be able to pick up subtle environmental cues, such as a baby’s cry or cough, or telltale odors or sounds that might escape the less discriminating male system. There have been reports that females have finer discrimination of color, particularly in the red end of the spectrum, can tolerate brighter lights, and see better in dim light,while men can read finer print and are better at night vision.15 Again, advantages in color
discrimination might aid females in detecting rashes or slight flushes in infants and
children that might indicate fever or diseases. They might be better able to detect slight facial flushing of peers or spouse, which may indicate anger or other emotional upset. Studies suggest that females are better able to read the emotional content of faces such as anger, sadness, or fear. These more acute senses may give females a general advantage in social interactions. If males have better ability to read fine print or in general discriminate detail on which they are focusing, it may have been an advantage while hunting, tracking, or in other historically male pursuits requiring good hand-eye coordination.

Females have a more sensitive sense of smell than males, both in the differentiation of odors, and in the detection of slight or faint odors.
Females have more sensitive hearing than males.
There is also indication that females are better at discerning differences in colours, while males are more aware of, and capable of discerning movement.
Females have a higher sensitivity to pain than males in facial tissue.
Males have a more developed sense of direction.
Males have a more developed sense of spatial awareness.
Females' voices are usually of a higher pitch than males'. Female screams carry further than males'. Females respond to danger with screaming vocalization and emotional response (Put functional MRI Scan here) and males with a fight or flight response. (Put male functional MRI scan response to female scream vocalization here)

Female fertility declines after age 30 and ends with the menopause.

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