SEMEN_FORENSIC CHEMISTRY

cunnilingus

mouth to v*gina

Fellatio

mouth to p*nis

anilingus

mouth to an*us

Sodomy

p*nis to an*us

Masochism

by inflicting pain upon themselves

sadism

by inflicting pain to others

sado-masochism

receive pain and inflict pain

bestality

sexual intercourse with a living animal

Necrophilia

desire to engage in sexual intercourse with the dead body

Pedophilia

obtaining pleasure from sexual contact with children

gerontophilia

sexual urge to elders

frottage

rubbing sexual organ

Exhibitionism

obtaining pleasure by exposing one's genitals to others

urolania

sexual urge to urine

coprophilia

sexual urge sa tae or dumi ng tao

incest

sexual relations between persons related by blood

plurlism

a group participates in sexual orgies(sexualfestival)

Transvestitism

obtaining sexual gratification by wearing the clothes of the opposite sex

semen

is the viscid, albuminous fluid with faint grayish-yellow color, having the characteristic fishy odor, and containing spermatozoa, epithelial cells, lecithin bodies and other substances

spermatozoon

is a living organism, normally present in the seminal fluid consisting of a head, neck and tail.

• it is from 50 to 55 micron in length

• the tail is the longest part and consist of a long slender filament with tapering end.

• the ciliary movement of the tail is responsible for the forward movement of the ______

azoopermia

no sperm at all

Oligospermia

very few sperm

aspermia

no semen

impotency

dysfunction or inability to get or keep a firm erection for sexual activity.

frigidity

no lubrication

• inability of a woman to achieve arousal or orgasm during sexual intercourse

infertility

inability to conceive

1. wearing apparel of the victim and of the alleged accused

2. vaginal smear of the victim

3. stains on the body of the victim and of the accused

4. stains found at the site of the commision of the offense

specimens may be examined for seminal fluid and spermatozoa

gross examinations

inspections by means of the naked ete or with the use of the hand lens

• the stain of semen is grayish-white to faint yellow in color. In fabrics, the area occupied is slightly depressed. it usually has a maplike contour with silvery apperance of the surface

• it is hardened with shiny borders

Inspection by means of Ultraviolet light

this method is resorted to in order to make visible, small seminal stains or patches.

determine the side of te clothing where the stain is located.

• under _______radiation, the seminal discharge shows BLUISH FLOURESCENCE

a. florence test

Micro-Chemical Examinations

florence test

allow a drop of hydrochloric acid solution and florence solution to run under the slip

• place a cover slip over the dried stain on the slide glass.

• a group of crystals appears similiar in color and in shape as the hemin (rhombic), but larger in size.

• the crystals are dark brown, in clusters, rosettes, crossing over the microscopic field

Barberio's Test

To the spermatic stain on the slide glass, a saturated solution (alcoholic or aqueous) of picric acid is added. The preparation is placed under the microscope and needleshape crystals with yellow color is produced. Some allege that this test is specific for spermatic fluid. The reaction probably depends-on the presence of spermatic secretion.

Acid Phosphatase test

The semen produces a very high acid phosphatase activity as compared with other body fluids (saliva, perspiration, urine, etc.) and common vegetable and fruit juice stains.

Microscopic Examinations:

A dried spermatic fluid stain on the slide is stained with hematoxylin or methylene blue and counter-stained with eosin. The presence of a complete spermatozoon will undoubtedly infer the presence of seminal fluid.

Dr. Hankin's Method

The fabric with seminal stain is boiled with tannin solution before dissolving in a solution of potassium cyanide so as to render the spermatozoa capable of removal. The fabric is then placed on a slide, teased with carbol-fuchsin. This is examined with a medium power lens