Systemic circuit is defined as one of the two circuit of circulation that occurs in human body.
<h3><u>Explanation</u>:</h3>
The circulatory system is divided into two phases in the human body. They are:
A. Pulmonary circulation
B. Systemic circulation.
The pulmonary circulation is the short circuit of circulation that starts from the right ventricle, goes to lungs via pulmonary artery and returns to left auricle via pulmonary vein.
The systemic circulation is the bigger circuit that starts from the left ventricle, goes to each and every organ of the body via aorta, and returns to the right auricle via venacava.
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<span>They are generally referred to as grasslands. Grasslands could be tropical grassland (savanna) or temperate grasslands</span>
Answer;
-Parfocal
Parfocal is the word that describes a microscope that remains in focus when the objective lenses are changed.
Explanation;
Parfocal means that when one objective lens is in focus, then the other objectives will also be in focus.
Parfocalling compound microscope objectives is a procedure which allows one to adjust each objective lens so that it will remain in relative focus with the other objective lenses on the microscope when switching from one magnifcation to the next.