16 Questions
Which factor affects the color of a blood stain?
Thickness of the stain
Why is the examination of blood stains important in criminal cases?
To analyze the physical, chemical, and microscopical characteristics of the blood
What does a yellow blood stain indicate?
No significant information can be inferred from a yellow blood stain
What aspect of blood character is examined based on its solubility?
Chemical character
What is the purpose of examining the shape of a blood stain?
To confirm if it is human blood or not
What is the color of arterial blood?
Bright red due to deoxygenated hemoglobin
Which factor affects the color of very old blood stains?
Weather condition
Which type of blood contains placental cells?
Blood from abscess
What is the characteristic offensive odor of menstrual blood?
Offensive odor
What does post mortem blood clotting time indicate?
Does not clot due to the secretion of fibrinolysin
Which solvent is suitable for extracting fresh blood stains?
(oxy Hb) : distilled water or saline
What shape does a stable source of blood create?
Rounded
What solvent is suitable for old blood stains on leather and wood?
Weak Ammonia
How does blood on a dark surface change color?
No red color can be seen at any time
What is the color of blood from an abscess?
(Hb) changed to acid hematin and contains food particles
What is the shape of a source at a height greater than 100cm?
(serrated with small spots around)
Test your knowledge on the identification and physical examination of animal species in forensic cases. Learn about assessing bones, hair, congenital abnormalities, blood stains, and more. Developed by Dr. Samar Saber in 2018.
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