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- Respiratory system (5107 bytes)
43: ...ree is mostly dead because [[air]] can penetrate only skin deep. However, most plants are not involved...
46: ...in. Spiracles can be found along the abdomen and thorax of the insect body but never on the head. (Perkin... - Abdomen (6929 bytes)
2: ...part of the body between the [[pelvis]] and the [[thorax]]. The front of the abdomen is the [[abdominal ca... - Diaphragm (anatomy) (1536 bytes)
1: [[Image:Thorax-diaphragm.png|thumb|right|A diagram of the thorac...
2: ...uscles between the ribs also participate in this enlargement.) When the diaphragm relaxes, air is exh... - Heart (10132 bytes)
7: ...uated slightly to the left of the middle of the [[thorax]], underneath the [[breastbone|sternum]] (breast...
17: ...sure. As the right ventricle needs to pump blood only to the lungs, it requires less muscle.
28: ...[[Heart sound|beating sounds of the heart]], commonly referred to as the "lub-dub" sound. - Rib (1848 bytes)
2: ...rib cage'''. They surround the [[chest]] (Latin [[thorax]]) of land [[vertebrate]]s. They protect the [[lu...
4: In mammals, obvious ribs only occur in the chest: fused-on remnants of ribs ca... - Chest (3592 bytes)
4: ...e words ''chest'' and ''thorax'' are often mistakenly used interchangeably.
7: ...g|drawing of an insect indicating position of the thorax]]''
17: ...e chest does not correspond to that of the bony [[thorax]] which encloses the [[heart]] and [[lungs]]; all... - Peritoneum (3904 bytes)
1: ... in the pleural and pericardial cavities of the [[thorax]] are called the [[pleura]] and the [[pericardium... - Symphyta (3111 bytes)
32: ...er of the [[Hymenoptera]]. The Symphyta are commonly referred to as ''sawflies'', and include [[insec...
34: ...road connection between the [[abdomen]] and the [[thorax]] ''(see image)''. The common name comes from th...
36: ...rita, are located behind the [[scutellum]] on the thorax. - Wasp (3838 bytes)
15: ...ocrita by having a broad connection between the [[thorax]] and [[abdomen]].
19: ...]]s or parasitoids as larvae, and feed on nectar only as adults. Many wasps are predatory, using othe...
28: * A [[stinger (organ)|stinger]] (only present in females because it derives from the [... - Queen bee (6221 bytes)
1: ...ature. In each hive or colony, there is normally only one adult, mated queen, who is the mother of the...
31: ...ed as expansion of a normal cell if a colony suddenly lost its queen. <br>
36: ...nge to other emerged or ready to emerge virgins. Unless the workers restrain them, emerged virgin quee...
39: ... mate with 12-15 [[drone (bee)|drones]]. She has only a limited time to mate, and if she is unable to ...
59: ...es are marked with a light daub of paint on their thorax. The paint used does no harm to the queen, and m... - Odonata (3722 bytes)
17: ... ''Insecta'', encompassing those [[insect]]s commonly known as [[Dragonfly|dragonflies]] (either when ...
25: ... Male odonates have an organ near the back of the thorax in which they store [[sperm|spermatozoa]]; they m... - Ant (13019 bytes)
17: ...bdomen, with a narrow waist (pedicel) between the thorax and abdomen. Ants possess strong mandibles used f...
32: ...ns. Males, produced by the queen, typically have only a single role: mating with the queen. After mati...
67: ...ng a specific role. The division of labor is not only essential for the colony's survival but also inf...
72: ...Initially, all ants in a colony are female, with only the queen and select females capable of mating. ... - Axial skeleton (863 bytes)
1: ...d of three major parts; the [[skull]], the bony [[thorax]] (i.e. the [[ribs]] and [[sternum]]), and the [[...
4: ...ebrates]] have an axial skeleton. This article mainly deals with the axial skeletons of humans; howeve...
10: == Thorax == - Spider (29039 bytes)
85: ...upported by a hard [[exoskeleton]] composed of mainly of [[chitin]]. Spiders also have eight legs (ins...
90: ...Primitive [[mygalomorph]] spiders generally have only a pair of [[book lungs]] filled with haemolymph,...
94: (2) cephalothorax<br />
98: ... is better developed than the rest, or there are only six pair, or no eyes at all. Several families of...
114: ... leg-like appendages on the front of his [[cephalothorax]], into the sperm, absorbing it. Mature male spid... - Thymus (6028 bytes)
16: ...t along the middle line, situated partly in the [[thorax]], partly in the [[neck]], and extending from the...
22: ...ulars from each other. The cortical portion is mainly composed of [[lymphoid cell]]s, supported by a n... - Crustacean (6274 bytes)
41: ...h the head and thorax may fuse to form a [[cephalothorax]]. They have two pairs of [[antenna (biology)|ant...
59: ...crayfish, shrimp), although widespread today are only found sporadically as [[fossil]]s. Most of the k... - Arthropod (9248 bytes)
43: ... groups of arthropods include the Diplopoda, commonly known as [[millipede|millipedes]], and the Chilo...
54: ...arthropods forms a rigid exoskeleton, composed mainly of [[chitin]], which is periodically shed as the...
62: ...have followed a "splitting" taxonomy, containing only generally accepted groups and assigning them hig... - Beetle (4984 bytes)
22: ... typically divided into three sections: the head, thorax, and abdomen. Beetles have well-developed antenna... - Brown recluse spider (5698 bytes)
15: ...nd usually has markings on the dorsal side of its thorax, with a black line coming from it that looks like...
17: ...lude a shelter consisting of disorderly threads. Unlike most web weavers, they leave these webs at nig...
26: ... this spider is not aggressive and usually bites only when disturbed. Actual brown recluse bites are r...
40: ...formly brown, unlike the brown recluse). They mainly wander in search of females to mate with, having...
42: ...es appear to be aggressive, but they do not bite unless trapped, and they are too small to easily pene... - List of bones of the human skeleton (3047 bytes)
30: ''In the [[thorax]] (25)'':
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