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Exam4CirculatorySystem
Exam4CirculatorySystem
7
Biology
Undergraduate 3
04/27/2014

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Term
Function of circulatory system
Definition
Gas exchange
Nutrient transport
Waste transport
Hormone transport
Thermoregulation
Immune system (drains into lymphatics)
Ion/Water balance
Term
Single verses double circulatory system
Definition
What happens in fish is single, it doesn't return to the heart after oxygenation.
Mammals are double, it goes back after going to heart.
Amphibians are both depending on if they use their lungs or skin
Term
Describe a human heart and blood circulation through it
Definition
Right atrium -> Right Ventricle -> Pul. art. Lungs Pul. Veins-> Left atrium.
THEN
Left ventricle -> Aorta -> body -> Vena cava -> Right atrium
Term
Path of blood through heart of amph. with lungs active
Definition
Blood comes from sinus venosus into right atrium. Goes through the antrioventricular valve. The blood in the outer lane pushes into into the inner lane where it goes through to the right/left pulmocutaneous to the lungs.
It comes back through the pulmonary vein into the left atrium. That passes into the ventricle into the trabeculae which directs it in the outer lane to the semi-lunar valve. Back in the right atrium it heads to the right and left systemic arches to go to the rest of the body
Term
Path of blood through heart of amph. without the lungs
Definition
Comes from sinus venosus like always (right atri) and heads down into ventricle. Without anything in the outer lane, it goes into that lane itself and heads through teh semilunar valve to the systemic arches. The left atrium is never used
Term
Bulbus arteriosus
Definition
the chamber before the ventral aorta in the fish heart.
Term
Sinus venosus
Definition
chamber before the artrium in fish heart
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