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Lungs are enclosed in

A) perichondrium B) periosteum C) pleural membrane D) pericardium Answer: C) pleural membrane Explanation: Lungs are enclosed in double-layered pleural membranes.... View Article

Haemoglobin is a type of

A) respiratory pigment B) carbohydrate C) skin pigment D) vitamin Answer:A) respiratory pigment Explanation: Haemoglobin is a globular protein with... View Article