Biology Questions and Answers
- What are the advantages of
the closed circulatory system
over the open circulatory
system?
The closed circulatory system isefficient. Since blood circulates only more
inside blood vessels it can dmore pressure reaching farthero it with
distances between the organs where
hematosistissues. In happens and the peripheral addition the circulatory speed (^)
also heightens making possible more
oxygen supply to gtissues, like the muscle tissuesreat consumin thatg (^)
then can perform faster movements.
Animals with a(with the exception on open circulatoryf insects that do system
gas exchange independently from the
circulation) arhave a low metae generally slower bolic rate. and
- What is the difference
between octopuses and
mussels regarding their
circulatory systems? How
does that difference influence
the mobility of these animals?
Cephalopod molluscs, like octopuses
and squids, hsystem with bave a closed circulatorylood pumped under
pressure flowing within vessels. Bivalve
molluscs, like man open circulatoryussels and oysters, system (also known have
as lacunar circulatory system) where
blood flows ufalls in cavitiesnder low pressure of the body and does notsince it (^)
only circulate within blood vessels.
Molluscsare larger, agile and can with closed circulatory systemsactively move;
molluscs with open circulatory systems
are smaller, slow and some are
practically sessile.
- Why, even thoough they
have an open circulatory
system, can flying insects like
flies beat their wings with
great speed?
In insectsbut this system the circulatory system does not participate in is open
the gas exchansupply to the tissues.ge process and in oxygen Gases go in and
out through the independent tracheal
system that allowswith the ambient air. Therefore an direct contact of cells
insect can supply the great oxygen
demand of its fast-beating wing muscleseven having open circulatory system. - What are the typical
components of a closed
circulatory system?
The typicalcirculatory system components of the closed are the blood vessels (^)
within veins anwhich bd capillaries), a plood circulatesumping organ (arteries, (^)
(heart) and the blood or bloodlike fluid.
- How does the heart impel
the blood?
The heart is a muscular orcontains chambers (right atrium gan thatand (^)
right ventricle and left atrium and right
ventricle) throThe blood enters the heart in the atria,ugh which blood passes. (^)
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