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.
Integumentary system is the outer covering of the body composed of the skin and the skin appendages, which are the hair, the nails; and the sebaceous glands and the sweat glands and their ducts.The hair includes eyebrows, eyelashes, hair follicle, and wool.ntegumentary System. Integumentary system is the outer covering of the body composed of the skin and the skin appendages, which are the hair, the nails; and the sebaceous glands and the sweat glands and their ducts. The hair includes eyebrows, eyelashes, hair follicle, and wool.