Endocrine system made up of Video
Endocrine System, Part 1 - Glands \u0026 Hormones: Crash Course A\u0026P #23 endocrine system made up of.Insect physiology includes the physiology and biochemistry of insect organ systems.
Although diverse, insects are quite similar in overall design, internally and externally. The insect is made up of three main body regions boat battlesthe head, thorax and abdomen. The head comprises six fused segments with endocrine system made up of eyesocelliantennae and mouthparts, which differ according to the insect's particular diet, e. The thorax is made up of three segments: the pro, meso and meta thorax, each supporting a pair of legs which may also differ, depending on function, e. Usually the middle and the last segment of the thorax have paired wings. The abdomen generally comprises eleven segments and contains the digestive and reproductive organs.
An insect uses its digestive system to extract nutrients and other substances from the food it consumes. This break-down process is known as digestion. The insect's digestive system is a closed system, with one long enclosed coiled tube called the alimentary canal which runs lengthwise through the body.
The alimentary canal only allows food to enter the mouth, and then gets processed as it travels toward the anus. The alimentary canal has specific sections for grinding and food storage, enzyme production, and nutrient absorption. The three regions include the foregut stomatodeum 27, the midgut endoocrine 13and the hindgut proctodeum In addition to the alimentary canal, insects also have paired salivary glands and salivary reservoirs. These structures usually reside in the thorax adjacent to the fore-gut.
The salivary glands 30 produce saliva; the salivary ducts lead from the glands to the reservoirs and then forward through the head to an opening called the salivarium behind the hypopharynx ; which movements of the mouthparts help mix saliva with food in the buccal cavity. Saliva mixes with food, which travels through salivary tubes into the mouth, beginning the process of breaking it down.
The stomatedeum and proctodeum are invaginations of the epidermis and are lined with cuticle intima.
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The mesenteron is not lined with cuticle but with rapidly dividing and therefore constantly replaced, epithelial cells. The main function of insect blood, hemolymph, is that of transport and it bathes the insect's body organs. It also plays an essential part in the moulting process.
It can contain unpalatable and malodourous chemicals that will act as a deterrent to predators.]
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