Question

The type of circulatory system in humans is-
A. Open
B. Closed
C. Both open and closed
D. Half open and half closed

Answer 1

Hint: Circulatory system consists of blood vessels that carry blood from heart to the various organs as well as from organs to the heart. Arteries serve the function of taking blood away from the heart whereas veins bring back blood from organs to the heart.

Complete answer:
Our heart is a muscular organ consisting of four chambers. Our heart is located behind and a bit left to our breastbone, it pumps out blood through the network of arteries and veins called the cardiovascular system. There are two types of majorly systems:-
Pulmonary circulation: This circulation consists of blood from heart to the lungs and back again. It consists of pulmonary arteries and veins.
Systemic circulation: Circulation consists of blood to the other parts of the organ from the heart.
One more type of circulation is present coronary circulation that is blood from heart muscles to the heart. The human circulatory system is therefore said to be a closed system since it pumps blood through a network of arteries and veins. This type of circulation is seen in all vertebrates and some of the invertebrates.

Hence the correct option is option B i.e. closed.

Additional information:- The human circulatory system also consists of another body fluid called lymph. It is called tissue fluid. It is produced by the lymphatic system which is formed of a network of interconnected organs, nodes and ducts.

Note: The path by which blood flows in the human body is unique, as well as is quite efficient too. The blood circulates through our heart two times; hence, it is known as double circulation. Many other animals like fish have single circulation i.e. where blood circulates only once throughout their body.