Circulatory System By: Bailey Berry Erin Parrott

Circulatory System… Moves blood to a site where it can be deoxygenated and decomposed of Newly oxygenated blood moves to the tissue of the body

Evolution of the Circulatory System The first organisms with a simple circulatory system including tissue that helped pump the fluid were protostomes in the Lophotrochozoa Around the Cambrian, 600 million years ago

Open Circulatory System The blood diffuses through cells Blood does not stay in veins or vessels Common in mollusks and arthropods (Just like Robbie!) 

Closed Circulatory System The blood is within vessels of different size and thickness at all times Is pumped by a heart through vessels (Just like Gillbert!) 

Evolution in the Closed System Annelids (Simplest)Vertebrates (Complex) -Two main blood vessels (dorsal and ventral) -5 pairs of vessels (“hearts”) that connect them -Animals like fish have two chambered hearts -Animals like frogs have three chambered hearts -Humans has four chambered hearts

Vertebrates- Two Chambered Heart – Has an atrium and one ventricle – Muscular walls – Valve between the chambers – Blood pumps through heart then out to other organs

Vertebrates- Three Chambered Heart Two atria and on ventricle Blood goes through a forked aorta, which leads to the lungs and other organs Both atria empty into the ventricle

Vertebrates- Four Chambered Heart Two atria and two ventricles Blood pumped into first atrium and oxygenized in the lungs Then pumped through second atria and fed through second ventricle into body for use

Mammalian Double Circulation Type of blood circulation where blood flows through heart twice. The pulmonary and systemic circulation system.

Pulmonary Circulatory The circulation of blood through the lungs Carries deoxygenated blood away from the heart and to the lungs Returns from the lungs back to the heart with oxygenated blood Systemic Circulatory The circulation of blood from the heart to the body Carries oxygenated blood away from the heart to the rest of the body Returns to the heart with deoxygenated blood on/33722/Embryonic-development-of-the-circulatory- system

Lymphatic System Consists of organs, ducts, and nodes Transports lymph Maintains fluid balance Absorbs lipids and transports them to the blood

Disorders Hypertension: High blood pressure Arteriosclerosis: thickening, hardening, and loss of elasticity of the walls of the blood vessels Rheumatic fever: systemic inflammatory disease

Special Thanks To… "Closed and Open Circulatory System." Welcome to Georgia State University. Web. 04 Apr "Double Circulation - Definition from Biology-Online.org." Life Science Reference - Biology Online. Web. 05 Apr "Evolution: Evolutionary Origin of Heart, Ucmp Berkeley, Primitive Hearts." AllExperts Questions & Answers. Web. 11 Apr "Hemocoel - Definition of Hemocoel by the Free Online Dictionary, Thesaurus and Encyclopedia." Dictionary, Encyclopedia and Thesaurus - The Free Dictionary. Web. 04 Apr "Lymphatic System." Patients Against Lymphoma - Lymphomation.org. Web. 05 Apr "Rheumatic Fever — Infoplease.com." Infoplease: Encyclopedia, Almanac, Atlas, Biographies, Dictionary, Thesaurus. Free Online Reference, Research & Homework Help. — Infoplease.com. Web. 11 Apr "The Vertebrate Animal Heart: Unevolvable, Whether Primitive or Complex." Intelligent Design and Evolution Awareness Center. Web. 05 Apr