heart structures and functions of hematocyte
Post on 13-Jul-2015
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Heart structure of fish, reptiles, and human
&Functions of hematocyte
Fish heart
ATRIUM,deoxygenatedblood flow fromvein
VENTRICLE,Deoxygenatedblood flow out to artery
Reptilian heart (most reptilian)
Right atrium
Right ventricle
Septum
Left ventricle
Left atrium
Human heart
Right atrium
Right ventricle
Left atrium
Left ventricle
Septum
Differences
Fish Reptile (most, not all) Human
2 chambered: 1 atrium and 1 ventricle
3 chambered (4 in case of crocodilians) : 2 atria and 1 ventricle
4 chambered : 2 atria and 2 ventricles
Single circulatory system Double circulatory system Double circulatory system
Only deoxygenated blood flow through
Both deoxy and oxygenated blood flow through, possibility of mixing
Both deoxy and oxygenated blood flow through, but strictly not mixed
No septum Partially dividing septum Complete septum
Similarities
• Made up of cardiac muscle and connecting tissue
• Lies in the anterior part of body cavity, dorsal to the gut
• Surrounded by pericardium
Functions of hematocyte
• Erythrocytes - carry oxygen and collect carbon dioxide through the use of hemoglobin
• Leukocytes - defending the body against both infectious disease and foreign materials
• Thrombocytes - involved in hemostasis, leading to the formation of blood clots
• Thrombocytes – produce growth factor
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