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FORENSIC CHEM > key words > Flashcards

key words Flashcards

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1
Q

capillary blood, bright red in color and which is oxygenated blood.

A

Arterial blood

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2
Q

dark red in color, contains increased amount of carbon dioxide and which is non-oxygenated blood.

A

Venous blood

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3
Q

responsible for red color of blood which contains iron protein called globin (protein) and hematin (organic compound of iron)

A

Hemoglobin

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4
Q

found in Nitrates and Nitrites poisoning which is chocolate brown in color.

A

Methemoglobin

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5
Q

found in the presence of bacteria (clostridium perfringens) in severe constipation, enterogenous cyanosis and blood is lavender is color.

A

Sulfhemoglobin

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6
Q

excessive inhalation of gas from defective stoves and from automobiles which is cherry red color of blood.

A

Carboxyhemoglobin

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7
Q

hemoglobin that is combined with oxygen
that gives color to the arterial blood.

A

Oxyhemoglobin

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8
Q

hemoglobin that is combined with carbon dioxide that gives color to the venous blood.

A

Reduced hemoglobin

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9
Q

this contain hemoglobin and carry oxygen to various cells in the body. It is circular, biconcave discs or rounded edges.

A

Red blood cells( Erythrocytes)

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10
Q

this are masses of nucleated protoplasm. It defends the body from invading microorganisms. It also fights infection.

A

White blood cells( leucocytes)

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11
Q

They have a longer lifespan than many white blood cells and help to break down bacteria.

A

Monocytes

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12
Q

They create antibodies to fight against bacteria, viruses, and other potentially harmful invaders.

A

Lymphocytes

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13
Q

They kill and digest bacteria and fungi. They are the most numerous types of white blood cell and your first line of defense when infection strikes.

A

Neutrophils

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14
Q

These small cells seem to sound an alarm when infectious agents invade your blood. They secrete chemicals such as histamine, a marker of allergic disease, that help control the body’s immune response.

A

Basophils

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15
Q

They attack and kill parasites and cancer cells, and help with allergic responses.

A

Eosinophils

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16
Q

this are cells that are produced by the bone marrow and are necessary for proper clotting of blood. It is normally responsible for the retraction of blood clot.

A

Platelets(thrombocytes)

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17
Q

55% Plasma is the fluid or portion of blood where the cells are suspended.

A

liquid portion

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18
Q

the most abundant protein in the blood. It binds with many drugs.

A

Albumen

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19
Q

the important role in the immune mechanism of the body. The globins carry drugs as well as sex and thyroid hormones, lipids and iron.

A

Globulins

20
Q

the yellowish fluids of the blood in which numerous blood corpuscles are suspended. A Straw – yellow liquid formed when blood to which an oxalate has been added to prevent clotting is allowed to stand.

A

Plasma

21
Q

A straw – yellowish liquid formed when clotted blood is allowed to stand for sometimes and the blood contracts.

A

Serum

22
Q

Methods of collecting blood

A

Capillary blood sample
Venous blood sample
Arterial blood sample

23
Q

an extremely sensitive test that can be applied to minute stain

A

Benzidine test

24
Q

For many years the most commonly used preliminary test for blood. Its use has generally been discontinued, as it is known carcinogen.

A

Benzidine test

25
Q

Positive result of Benzidine test

A

Intense blue color

26
Q

alternative test to Benzidine test. It can detect blood in a dilution of 1:80,000,000 parts

A

Phenolphthalein test

27
Q

Positive result for phenolphthalein test

A

Rose color develops/deep pink/permanganate color

28
Q

A fairly delicate test showing the presence of fresh blood in a solution of 1:50,000 dilutions. It may not react to very old stain.

A

Guaiacum test

29
Q

Positive result for guaiacum test

A

Beautiful blue color that appears immediately.

30
Q

This test is not as sensitive as the benzidine test.

A

Leucomalachite green test

31
Q

Positive result for leucomalachite green test

A

Malachite green or bluish green

32
Q

An important presumptive identification for blood. The reaction of luminal with blood results in the production of light rather than color.

A

Luminol test

33
Q

known to destroy many important blood factors necessary for the forensic characterization of blood, so its use should be limited to seeking out blood invisible to the naked eye.

A

Luminol

34
Q

Positive result for luminol test

A

Luminescence or emission of light.

35
Q

refers to an enzyme that accelerates the oxidation of several classes of organic compounds

A

Peroxidase

36
Q

puncture sites for Capillary blood sample

A

Ring finger
Ear lobes
Heal or Toe

37
Q

Venous blood sample (enu)

A

Cephalic Vein
Medial Cephalic Vein
Basilic Vein
Jugular Vein

38
Q

Arterial blood sample (enu)

A

Radial Artery
Brachial Artery
Femoral Artery
Carotid Artery

39
Q

Kinds of blood

A

Arterial blood
Venous blood

40
Q

Abnormal derivatives of HB

A

Methemoglobin
Sulfhemoglobin
Carboxyhemoglobin

41
Q

Normal derivatives of Hemoglobin

A

Oxyhemoglobin
Reduced hemoglobin

42
Q

kinds of white blood cells

A

Monocytes
Lymphocytes
Neutrophils
Basophils
Eosinophils

43
Q

Preliminary test for blood

A

Benzidine test
Phenolphthalein test
Guaiacum test
Leucomalachite green test
Luminol test

44
Q

positive result for Teicmann test

A

Dark brown rhombic crystal of haemin or haematin chloride arranged singly or in cluster.

45
Q

Positive result for Acetone-Haemin test

A

Small dark, Diachronic Acicular Crystals of Acetone Haemin.

FORENSIC CHEM (3 decks)

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