Do fishes have a closed or open circulatory system
Do fishes have a closed or open circulatory system? Describe the number of chambers does a fish heart contain? How does blood flow all through the fish body?
Expert
Since in every vertebrate, the circulatory system of fishes is closed, that is, blood flows merely in blood vessels. The fish heart has just two consecutive chambers: a thin-walled atrium and muscular ventricle. The arterial (or oxygenated) blood comes from gills and gains arteries in the direction of tissues, then venous blood is collected by the veins and reaches atrium of the heart passing to the ventricle which pumps the venous blood in the direction of gills to be again oxygenated
Biomass: Sources of Biomass can take various forms and shapes. It can be solid in form as in agricultural wastes, waste wood from forestry and industry, wastes from food and paper industries, green municipal solid waste (MSW), dedicated energy c
What is the kind of nitrogen waste which mammals eliminate?
It is concerned with sharing and understanding of information. It consists of several steps explained below: 1) Develop an idea: the first step is to develop an idea that the sender wishes to transmit. This is the key step, because unless the
Illustrate the activation center of an enzyme? Is it the key or lock of the lock and key model?
Specify the plant tissues which are responsible for supporting of the plant?
Briefly write down the symptoms of meningitis or Brain fever?
If provided a territory and a list of physicians to call on, how would you go regarding it?
How the gymnosperm seeds are formed? What are the ploidies of structures which composed of the seeds?
Fielder's contingency model Taking the queue from the situation approach of leadership approach that any one the style cannot be consider suitable for all the situat
Write down some prophylactic measures for tapeworm infections?
18,76,764
1949074 Asked
3,689
Active Tutors
1443951
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!