Open and close circulatory systems and examples
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The document discusses open and closed circulatory systems. A closed circulatory system has blood that flows within vessels throughout the body and back to the heart, like in humans and most vertebrates. In an open system, found in insects and mollusks, hemolymph flows through open spaces between organs before returning to the heart. Key differences are that closed systems can regulate blood flow and pressure while open systems cannot.
Open and close circulatory systems and examples
- 1. OPEN AND CLOSE CIRCULATORY SYSTEMS AND EXAMPLES BY VALENTINA ALVAREZ,LUZ ANGELICA CARRILLO,DANNA SOFIA BENAVIDES
- 2. CIRCULATORY SYSTEM The circulatory system is a combination of vessels and organs that are used to transport blood and nutrients throughout an organism
- 3. CONCEPTS ARTERY :small tunnel that allows blood with oxygen in to pass around body from the heart VEINS :small tube that allows blood without oxygen to pass around body to heart CAPILLARY: tiny networks of blood vessels connecting arteries and veins BLOOD VESSELS: a tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary.
- 4. CLOSED CIRCULATORY SYSTEM • Organisms come is all different shapes and sizes and also have different types of circulatory systems. Animals can have either a closed system or an open system. • Referred to as closed because the blood in the system flows within a complex network of vessels or tubes, that are all
- 5. HOW WORKS The blood is pumped by a heart throughout the body in a continuous circuit of different types of vessels. a closed circulatory system creates higher pressure in the blood vessels, organisms with this type of circulatory system are able to grow larger because the body can push blood greater distances Circulates blood unidirectionally from the heart, around the body, and back to the heart.
- 6. EXAMPLES HUMANS – VERTEBRATES -- FEW INVERTEBATES
- 7. OPEN CIRCULATORY SYSTEM • Hemolymp is seen in animals that have this circulatory system this system consists of blood vessels plus open space ,this systems are less complex than closed , open circulatory system pump blood into a hemocoel with the blood difusing back to the circulatory system between cells also . • HEMOCOEL:cavity that holds hemolymp fluid • HEMOLIYMP:a fluid in the body cavities and tissues of invertebrates, i n arthropods functioning as blood and in some other invertebrates functioning as lymph
- 8. HOW WORKS 1. In most molluscs and arthropods the heart pumps hemolymph via vessels into tissue spaces that are sometimes enlarged into sackline tissues and eventually hemolimph drains back to the heart 2. In the grasshopper ,an arthropod the dorsal tubular heart pumps hemolymph into a dorsal aorta,which empties into hemocoel ,when heart contracts ,openings called ostia are closed ,when heart relaxes ,the hemolymp is sucked backinto the heart in way of ostia and the
- 9. EXAMPLES • Mollusks (snails, clams) • Arthropods –Grasshoper • Insects
- 10. DIFFERENCES
- 11. CLOSED OPEN Organs are not in direct contact of blood Organs come in direct contact with blood Blood flow can be regulated and the pressure is hight Blood flow cannot be regulated and the pressure is low Blood flows through closed spaces and have capillaries Blood flows through open spaces and don’t have capillaries The material transport by the blood arrives to the tissues through diffusion Blood pumped by heart travels to the blood vessels and irrigate directly to cells returning then by different mechanisms Animals only have 1 heart Animals can have 1 heart or 2 oxygenated blood can reach the extremities of the body much faster than with an open system Less energy organisms with a closed system can metabolize much faster, because it allows them to move, digest and eliminate waste much more quickly Oxygenated blood takes more time to reach the extremities of the body, the open system is only feasible in smaller animals
- 12. CONCLUSIONS • Vertebrates and Invertebrates possess one of two types of circulatory systems. Namely, open circulatory system and closed circulatory system. • Open circulatory system is primarily found in invertebrates. Here, the blood flows freely through cavities and there is no vessels to conduct the blood. • Closed circulatory system, on the other hand is found in vertebrates and a few invertebrates like earthworms. This system has the presence of vessels that conduct blood throughout the body.
- 14. SOURCES • http://www2.gsu.edu/~bioasx/closeopen.html • https://study.com/academy/lesson/compare-contrast-open-closed-circulatory-systems.html • https://byjus.com/biology/difference-between-open-and-closed-circulatory-systems/ • https://slideplayer.com/slide/9906478/ • https://www.dictionary.com/browse/lymph • biology book -- Sylvia S. Mader Edit Mac Graw Hill • ttps://byjus.com/biology/difference-between-open-and-closed-circulatory-systems/} • http://miguel-artrophodosnoinsectos.blogspot.com/2012/05/diferencias-entre-sistemas-circulatorio.html • https://muyfitness.com/diferencias-entre-un-sistema-circulatorio-abiento-y-cerrado_13105535/