Environmental Pathology

Question 1

In males the relative risk of cigarette smoking causing cancer is highest for

• Lung
• Larynx
• Oesophagus
• Lip, oral cavity and pharynx
• Pancreas

Answer 1

Lip, oral cavity and pharynx

Question 2

cessation of cigarette smoking causes the most prompt reduction in risk for

• lung cancer
• COPD
• MI
• CVA
• Cancer of the bladder

Answer 2

MI

Question 3

smoking is associated with all of the following except

• particle deposition in alveolar macrophages
• spontaneous abortion
• atherosclerosis
• bladder carcinoma
• chronic liver disease

Answer 3

chronic liver disease

Question 4

Exposure to benzene causes

• Mesothelioma
• Bladder carcinoma
• Stomach carcinoma
• Liver angiosarcoma
• Leukaemia

Answer 4

Leukaemia

Question 5

The immediate lethal dose of radiation exposure for humans in a non-mass casualty situation is

• 50 rads
• 150 rads
• 250 rads
• 350 rads
• 450 rads

Answer 5

450 rads

Question 6

Which of the following tissues is the most susceptible to radiation injury

• GI mucosa
• CNS
• Lymph and haemopoietic
• Bone
• Lungs

Answer 6

Lymph and haemopoietic

(only temporary sterility will occur at lower doses)

Question 7

Which is true regarding thermal burns

• The depth of the burn is not clinically important
• Full thickness burns can regenerate from skin appendages
• Shock is an important systemic consequence of burns which involve a large percentage of body surface area
• The surface of burn is quickly colonized by streptococcus
• septic shock is not a complication of burns

Answer 7

Shock is an important systemic consequence of burns which involve a large percentage of body surface area

Question 8

regarding electrical/hyperthermic injuries which is correct

• all body tissues conduct equally
• amperage is not important
• massive skin burns may cause death
• dry skin is a good electrical conductor

Answer 8

massive skin burns may cause death

Question 9

Which deficiency causes diarrhea, dermatitis and dementia

• Pyridoxine
• Vit A
• Riboflavin
• Vitamin B1
• Niacin

Answer 9

Niacin

Question 10

decreased levels of B12 are associated with the following

• autoimmune gastritis
• Crohn’s
• Subacute degeneration of cord
• All of the above
• None of the above

Answer 10

All of the above

Question 11

regarding iron, which is false

• absorption is increased by vitamin C
• most is found in myoglobin.
• most in absorbed in duodenum
• women have smaller iron stores than men
• transferrin is usually 33% saturated

Answer 11

most is found in Ferritin