Blood and other body fluids have direct contact with the tissues in this type of circulation?
lungs
3.cells in the nervous system are different in structure from cells in the circulatory system and they carry out different specialized functions
circulatory system does.
the circulatory system does not "produce" blood cells. The circulatory system does not produce anything, it just circulates the blood around your body.
Circulatory system
Circulatory system delivers blood (containing oxygen) to cells.
Even if insects have an open circulatory system, which is usually characterized by slow animals with low metabolic rates, their circulatory system does not participate in supplication of oxygen to the tissues and in the gas exchange process. That is handled by the independent tracheal system, the spiracles, which allows direct contact of cells with the air. With this, the oxygen demand can be supplied even with an open circulatory system.source: http://www.biology-questions-and-answers.com/the-circulatory-system.html
most of the cells are in contact with a watery environment
3.cells in the nervous system are different in structure from cells in the circulatory system and they carry out different specialized functions
circulatory system does.
The circulatory system pumps the blood which carries the nutrients that the cells needs. The circulatory system gets the nutrients from the digestive system.
The respiratory system, which is made up of the heart, lungs and blood vessels.
no
The Circulatory system is a busy system because it can never stop. Your circulatory system is what pumps your blood and gives your cells food water and oxygen and takes waste away from your cells. If your circulatory system ever stopped then you would die.
circulatory system
circulatory system
The circulatory system.
Erythrocytes, neutrophils, eosinophils, basophils, lymphocytes (B-cells and T-cells), and monocytes are all found in the circulatory system.