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English: Diagram of the internal structure of the two metamers of an Oligochaete. ... Oligochaeta anatomy 2.svg; Earthworm anatomy 2 big tags.png; SVG development
Diagram showing the parts of the pharynx. Date: 30 July 2014 (released by CRUK) Source: Original email from CRUK: Author: Cancer Research UK: Permission (Reusing this file) This image has been released as part of an open knowledge project by Cancer Research UK. If re-used, attribute to Cancer Research UK / Wikimedia Commons
Oligochaetes are well-segmented worms and most have a spacious body cavity (coelom) used as a hydroskeleton.They range in length from less than 0.5 mm (0.02 in) up to 2 to 3 metres (6.6 to 9.8 ft) in the 'giant' species such as the giant Gippsland earthworm (Megascolides australis) and the Mekong worm (Amynthas mekongianus).
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English: Heart diagram with labels in English. Blue components indicate de-oxygenated blood pathways and red components indicate oxygenated blood pathways ...
The pharynx (pl.: pharynges) is the part of the throat behind the mouth and nasal cavity, and above the esophagus and trachea (the tubes going down to the stomach and the lungs respectively). It is found in vertebrates and invertebrates, though its structure varies across species. The pharynx carries food to the esophagus and air to the larynx.
The total concentration of carbon dioxide (in the form of bicarbonate ions, dissolved CO 2, and carbamino groups) in arterial blood (i.e. after it has equilibrated with the alveolar air) is about 26 mM (or 58 ml/100 ml), [27] compared to the concentration of oxygen in saturated arterial blood of about 9 mM (or 20 ml/100 ml blood).
English: Diagram of the human heart. 1. Superior vena cava 2. 4. Mitral valve 5. Aortic valve 6. Left ventricle 7. Right ventricle 8. Left atrium 9. Right atrium 10. Aorta 11. Pulmonary valve 12. Tricuspid valve. 13. Inferior vena cava