All Free Pathology MCQs with Answers

• A. Skin and mucosa
• B. Skin and pilosebaceous adnexa
• C. Skin, lips and tongue
• D. All of the above

Explanation: Basal cell carcinoma arises from basal cells of the epidermis and is also found in pilosebaceous units, especially on sun-exposed skin.

• A. Achalasia
• B. Cacoguesia
• C. Atelexis
• D. Cacchexia

Explanation: Cancer cachexia is the wasting syndrome caused by reduced intake, altered metabolism and inflammatory cytokines such as TNF.

• A. All of the above
• B. EBV
• C. Hepatitis -B virus
• D. HPV

Explanation: HPV, EBV and hepatitis B virus are all human oncogenic viruses associated with cancers such as cervical or anogenital carcinoma…

• A. Lung
• B. Breast
• C. Cervix
• D. Ovary

Explanation: Breast carcinoma is generally the most frequently diagnosed malignant tumour in women worldwide.

• A. T- cell
• B. Lymph vessels
• C. B - cell
• D. Lymph nodes

Explanation: Burkitt lymphoma is a highly aggressive mature B-cell neoplasm caused by deregulation of MYC, usually through a t(8;14) translocation.

• A. Haemorrhage
• B. Increased mitoses
• C. Necrosis
• D. Metastasis

Explanation: Metastasis is the most definitive evidence of malignancy because it proves that tumour cells can invade and establish growth at distant…

• A. Mass screening of cervical cancer
• B. Pro-cancerous lesions of oral cavity
• C. Cigarette smokers
• D. Heavily keratinized lesions of oral cavity

Explanation: Exfoliative cytology is particularly useful for mass screening of cervical cancer because abnormal epithelial cells can be collected from…

• A. Disorganized cell structure
• B. Invasion of blood vessels
• C. Encapulation
• D. Rapid, erratic growth

Explanation: Malignant tumours typically show disorganized growth, rapid erratic proliferation and invasion, including vascular invasion.

• A. Right axillary nodes
• B. Left axillary nodes
• C. Right supraclavicular nodes
• D. Left supraclavicular nodes

Explanation: Troisier sign is enlargement of the left supraclavicular, or Virchow, node, classically suggesting metastatic abdominal malignancy such as…

• A. Reed-sternberg cells
• B. Plasma cells
• C. Eosinophilis
• D. Giant cells

Explanation: The characteristic neoplastic cells in Hodgkin lymphoma are Reed-Sternberg cells, typically large binucleate cells with prominent…

• A. Increased liver glycogenolysis
• B. Causes broachiolar constriction
• C. Evokes extrasystoles in the heart
• D. Produces restlessness and anxiety

Explanation: High-dose intravenous epinephrine causes bronchodilation through β2-receptor stimulation, not bronchoconstriction.

• A. Penicillinase
• B. Pryosulphate
• C. Protamine sulphate
• D. Potassium sulphate

Explanation: Protamine sulphate is a strongly basic protein that binds acidic heparin and neutralises its anticoagulant effect.

• A. Testosterone
• B. Parathyroid
• C. Insulin
• D. Thyroid

Explanation: Excess thyroid hormone increases tissue responsiveness to catecholamines, partly by increasing β-adrenergic receptor effects.

• A. Lowers the intraocular pressure in glaucoma
• B. Cleaved by acetylcholinesterase
• C. Inhibits sweat and lacrimation
• D. Causes tachycardia

Explanation: Pilocarpine is a direct muscarinic agonist that contracts the ciliary muscle and increases aqueous outflow, thereby lowering intraocular…

• A. Atropine
• B. Diazepam
• C. Succinylcholine
• D. Neostigmine

Explanation: Succinylcholine rapidly produces skeletal-muscle paralysis and is used to relax the laryngeal muscles during severe laryngospasm.

• A. Corticosteroids
• B. Antihistamines
• C. Diazepam
• D. Adrenalin

Explanation: Adrenaline is the first-line treatment for life-threatening anaphylaxis because it rapidly reverses bronchoconstriction, vasodilation and…

• A. Antacids
• B. Benzodiazepine
• C. Codeine, dihydrocodeine, paracetmol
• D. Nsaid's like Ibuprofen

Explanation: Ibuprofen and other NSAIDs increase bleeding risk with warfarin by impairing platelet function and damaging the gastric mucosa, in…

• A. Bronchial muscle relaxationConsult Online Doctors
• B. Contraction of urinary spinctors
• C. Vasoconstriction
• D. Mydriasis

Explanation: Beta2 stimulation relaxes bronchial smooth muscle, producing bronchodilation.

• A. choline, adrenaline and amphetamine
• B. Pancuronium, rocuronium
• C. Glycinium neostigamine and physostigamine
• D. Pirenzipine, propanolol and propantheline

Explanation: Pancuronium and rocuronium are non-depolarizing neuromuscular blockers that competitively inhibit nicotinic receptors at the neuromuscular…

• A. D-tubocurarine
• B. Gallamine triethiodide
• C. Succinylcholine
• D. Pancuronium bromide

Explanation: D-tubocurarine, gallamine and pancuronium are non-depolarizing blockers, whereas succinylcholine first depolarizes the motor end plate and…