Other insects have chewing mouthparts and eat leaves or other plant matter. Some insects bite or pinch, and others pierce and suck blood or plant fluids. The pair of antennae may have obvious segments, or look like a feather. They come in different forms and are a clue to identifying the insect.ther insects have chewing mouthparts and eat leaves or other plant matter. Some insects bite or pinch, and others pierce and suck blood or plant fluids. The pair of antennae may have obvious segments, or look like a feather. They come in different forms and are a clue to identifying the insect.
The integumentary system is the body's first line of defense against bacteria, viruses, and other pathogens. It also helps to provide protection from harmful ultraviolet radiation. The skin is a sensory organ in that it has receptors for detecting heat and cold, touch, pressure, and pain.
â¢ Integumentary System â consists of the skin and its. accessory organs. â hair, nails, and cutaneous glands. â¢ skin is the most vulnerable organ. â exposed to radiation, trauma, infection, and injurious chemicals. â¢ receives more medical treatment than any other organ. system.