Cardio Part 2- 1 Flashcards
What species have Atria 2 and Ventricles 2
Birds and Mammals
What species have Atria 2 and Ventricles 1
Amphibians and Turtles
What species have Atria 1 and Ventricles 1
Fish
Right atrium GETS _____ rich blood from body via vena cava
CO2
Right ventricles SEND CO2 rich blood to __________ via pulmonary arteries
Lungs
Left atrium GETS ____ rich blood from lungs via pulmonary veins
O2
Left ventricle SENDS O2 rich blood to ________ via aorta
Body
What is the heart enclosed with that is a fibrous sac?
Pericardium
What layer of the pericardium that:
Extension of the blood vessels in intima layer
Endocardium
What lines all internal surfaces of the heart?
Endothelium
What is the dense/compact collagenous connective tissue + elastic fibers?
Subendothelium
What is the loose collagenous connective tissue with impulse conduction system via Purkinje fibers?
Subendocardium
What three thing make up endocardium?
Endothelium
Subendothelium
Subendocardium
What layer of the pericardium that:
Thickest layer
Myocardium
Why is the myocardium thicker L than R?
More force required to pump blood to all body than just lungs
Myocardium is ____________ in ventricles and _______________ in atria
Thicker
Thinner
What layer of the pericardium that:
Also called serosal membrane of hearts- outermost layer
Epicardium
What layer of the pericardium that:
Mesothelium and Subepicardium
Epicardium
What is supported by loose collagenous connective tissue- continuous with the inner surface of pericardial sac?
Epicardium
What is loose collagenous connective tissue with:
Nervous ganglia
Adipose tissue
+ blood vessels and nerves
Subepicardium
