The skin.
Keratin is a protein that forms the outer layer of the skin, as well as hair and nails. It is made from amino acids by the animal's body cells.
Serosa.
This is known as the crust.
No it doesn't... Aluminum has 3 extra electrons in the outer shell
An exoskeletin is a hard outer protection on an insects body.
Skin.
phosophlipids and embedid protiens
The skin.
The skin.
The integumentary system is the outer protection of the body, namely skin, nails, hair and other related glands.
It forms the outer covering of the body known as the free surface of the skin. It also forms the lining of the digestive, respiratory, and urinary tracts; blood and lymph vessels; serous cavities (cavities which have no communication with the outside of the body, and whose lining membrane secretes a serous fluid), such as the peritoneum or pericardium; and tubules (small tubes which convey fluids) of certain secretory glands, such as the liver and kidneys. Short answer: protection, secretion and absorption.
at a organ level of organization and they are acoelomates.
It is your backbone and forms a protection around your spinal cord. It runs from the base of your skull to your "tail bone".
The skeleton (from Greek σκελετός, skeletos "dried body", "mummy"[1]) is the body part that forms the supporting structure of an organism. There are two different skeletal types: the exoskeleton, which is the stable outer shell of an organism, and the endoskeleton, which forms the support structure inside the body.
Skin is the outer covering for the body. It is part of both the Sensory system and the Immune system.-------------------------------------------------------------------------Answer: Integumentary Systemsystem includes: Skin, nails, and hair; cutaneous sense organs and glandsFunction:Protects deeper organs from injury due to bumps, chemicals, bacteria, and dehydration (drying out).Excretes salts and ureaHelps regulate body temperature
Outer skeleton that provides protection