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Insects have spiracles on their exoskeletons to allow air to enter the trachea. [1] [page needed] In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss. This is done by contracting closer muscles surrounding the spiracle.
The timing and duration of spiracle closures can affect the respiratory rates of the organism. [5] Spiracles may also be surrounded by hairs to minimize bulk air movement around the opening, and thus minimize water loss. In larger insects, spiracle control is more complex and critical for managing gas exchange due to their higher metabolic demands.
The following 11 pages use this file: Arthropod head problem; Insect; Insect morphology; Suboesophageal ganglion; Supraesophageal ganglion; Ventral nerve cord; Wikipedia:Featured picture candidates/Insect anatomy diagram; Wikipedia:Featured picture candidates/May-2014; Template:Image key; Template:Image key/doc; Portal:Insects
In this spider diagram, the position of the book lungs is labelled 1. Spider book lungs (cross section) Internal anatomy of a female spider, book lungs shown in pink A book lung is a type of respiration organ used for atmospheric gas-exchange that is present in many arachnids, such as scorpions and spiders.
Stylized diagram of insect digestive tract showing malpighian tubule, from an insect of the order Orthoptera. The first section of the alimentary canal is the foregut (element 27 in numbered diagram), or stomodaeum. The foregut is lined with a cuticular lining made of chitin and proteins as protection from tough food.
The forelegs are reduced in the Nymphalidae Diagram of an insect leg. The thorax, which develops from segments 2, 3, and 4 of the larva, consists of three invisibly divided segments, namely prothorax, metathorax, and mesothorax. [11] The organs of insect locomotion – the legs and wings – are borne on the thorax.
The aim of the Handbooks is to provide illustrated identification keys to the insects of Britain, together with concise morphological, biological and distributional information. The series also includes several Check Lists of British Insects. All books contain line drawings, with the most recent volumes including colour photographs.
Original – Anatomic Diagram of an insect; individual labels are in the article and on the description page Old PNG Reason Highly educational, with good EV Articles in which this image appears Insect morphology, insect FP category for this image Wikipedia:Featured pictures/Diagrams, drawings, and maps/Diagrams Creator Piotr Jaworski