Aquatic skin - Integument of bony fishes
6 important questions on Aquatic skin - Integument of bony fishes
What are 3 differences between human skin and bony fish skin?
- Bony fish skin contains bony scales
- Bony fish skin contains mucus and mucus cells
- Bony fish skin does not cotnain keratinized cells
What are 3 characteristics of the epidermis layer in bony fish?
- A multicellular unkeratinised layer
- The epidermis contains many mucus cells
- The epidermis has a mucus layer
What is a characteristic of the dermis layer in bony fish?
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What are the two scale types in fish and what species do they occur in?
- Chondrichthyes, in sharks and rays
- Osteichthyes, in bony fish
What are the 4 characteristics of the chondrichthyes' scales?
- Placiod scales
- homologous with mammalian teeth
- They protect the inner environment
- They reduce energy costs for swimming
What are the 3 characteristics of osteichthyes' scales?
- The scales have an acellular shape
- They give protection and store calcium
- They show age rings
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