Question
In: Biology
Describe the layers of human skin, explain some skin details and defenses as well as some...
Describe the layers of human skin, explain some skin details and defenses as well as some diseases of particular parts.
Solutions
Expert Solution
Answer: layers of skin:
1. Epidermis: the outermost layer of skin is called epidermis. It provides barrier against any pathogen. It is waterproof and gives us skin tone.
Disease : rash, dandruff, melanoma is associated with uncontrolled growth of melanocytes.
Defence : it act as barrier for all kind of infectious particles. It also protects us from harmfull sun rays.
2. Dermis: below epidermis dermis is present which sweat glands, connective tissue and hair follicles. It also contain langerhans and mast cells.
Disease : acne is associated with sebaceous gland.
Defence: lagerhans cells are the phagocytosis cells which protects against allergens and bacteria.
3. Hypodermis: Below dermis hypodermic is present. It is the deeper layer which contains fat cells, fibroblasts macrophages and connective tissue. This is also called as subcutaneous layer.
Disease: acrogeria- associated with loss of subcutaneous fat and skin atrophy.
Deffence : hypodermis contains macrophages which protects us from invading antigen.
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