WebDiversity of Flatworms. The flatworms have been traditionally divided into four classes: Turbellaria, Monogenea, Trematoda, and Cestoda (Figure 28.15).However, the … WebFigure 22.10. In the excretory system of the (a) planaria, cilia of flame cells propel waste through a tubule formed by a tube cell. Tubules are connected into branched structures that lead to pores located all along the sides of …

Lab 4 - Comparison of Parasitic and Free-Living Worms

WebApr 9, 2024 · Gas exchange by direct diffusion across surface membranes is efficient for organisms less than 1 mm in diameter. In simple organisms, such as cnidarians and … WebThe atrium collects blood that has returned from the body and the ventricle pumps the blood to the gills where gas exchange occurs and the blood is re-oxygenated; this is called gill circulation. The blood then continues through the rest of the body before arriving back at the atrium; this is called systemic circulation. This unidirectional ... hotel sunday river

15.3 Flatworms, Nematodes, and Arthropods - OpenStax

WebOct 24, 2024 · A person breathes air in through their nostrils or their mouth. The mouth and nasal airways come together at a junction called the pharynx, which is located at the back of the mouth, and continues ... WebA: Marine mammals are aquatic mammals that survive by relying on the ocean and other marine ecosystems.…. Q: Using Daphnia and grasshoppers as specific examples, … WebExplain how blood flows through the body; ... to the end of each respiratory bronchiole. At the end of each duct are alveolar sacs, each containing 20 to 30 alveoli. Gas exchange occurs only in the alveoli. The alveoli are thin-walled and look like tiny bubbles within the sacs. ... Flatworms are small, literally flat worms, which ‘breathe ... lincoln ne motion graphics jobs