| D008322 |
Mammals |
Warm-blooded vertebrate animals belonging to the class Mammalia, including all that possess hair and suckle their young. |
Mammalia,Mammal |
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| D002642 |
Chick Embryo |
The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. |
Embryo, Chick,Chick Embryos,Embryos, Chick |
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| D006321 |
Heart |
The hollow, muscular organ that maintains the circulation of the blood. |
Hearts |
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| D006329 |
Heart Conduction System |
An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart. |
Conduction System, Heart,Conduction Systems, Heart,Heart Conduction Systems,System, Heart Conduction,Systems, Heart Conduction |
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| D006346 |
Heart Septum |
This structure includes the thin muscular atrial septum between the two HEART ATRIA, and the thick muscular ventricular septum between the two HEART VENTRICLES. |
Cardiac Septum,Heart Septa,Septa, Heart,Septum, Cardiac,Septum, Heart |
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| D000818 |
Animals |
Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. |
Animal,Metazoa,Animalia |
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| D001283 |
Atrioventricular Node |
A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart. |
AV Node,A-V Node,Atrio-Ventricular Node,A V Node,A-V Nodes,AV Nodes,Atrio Ventricular Node,Atrio-Ventricular Nodes,Atrioventricular Nodes,Node, A-V,Node, AV,Node, Atrio-Ventricular,Node, Atrioventricular,Nodes, A-V,Nodes, AV,Nodes, Atrio-Ventricular,Nodes, Atrioventricular |
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| D013997 |
Time Factors |
Elements of limited time intervals, contributing to particular results or situations. |
Time Series,Factor, Time,Time Factor |
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| D014338 |
Truncus Arteriosus |
The arterial trunk arising from the fetal heart. During development, it divides into AORTA and the PULMONARY ARTERY. |
Arteriosus, Truncus |
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