This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of sebaceous and sweat glands, Subject name: Dental
[{'content': 'Skin with all its appendages is known as: \nSelect and explain. \nA. Pilosebaceous unit, B. Integumentary system, C. Reactive unit, D. Malpighian system', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Skin with all of its appendages is known as Integumentary system. It protects the body from external damage, loss of water etc. It includes hair and nails as well.(in case of animals/birds/reptiles- includes scales, feathers, hooves as well)', 'role': 'assistant'}]