
Define open and closed circulatory systems.
Answer
480k+ views
2 likes
Hint: A system required to transport oxygen and nutrients throughout the body.
The circulatory system is made up of blood vessels that carry blood away from and towards the heart.
Complete answer:
There are two types of circulatory system:
Open circulatory system – The blood flows freely through cavities and is not confined to blood vessels. It is mainly found in vertebrates.
Closed circulatory system – Where blood leaves the heart and travels through the blood vessels. It is present in vertebrates and echinoderms.
The circulatory system consists of three independent systems that work together: the heart, lungs, and arteries, veins, coronary, and portal vessels.
Difference between the open and closed circulatory system
Note: In an open circulatory system, the fluid flowing in the system is called hemolymph. In a closed circulatory system fluid flowing in the system is called blood. The pioneer of gas transportation is the respiratory system.
The circulatory system is made up of blood vessels that carry blood away from and towards the heart.
Complete answer:
There are two types of circulatory system:
Open circulatory system – The blood flows freely through cavities and is not confined to blood vessels. It is mainly found in vertebrates.
Closed circulatory system – Where blood leaves the heart and travels through the blood vessels. It is present in vertebrates and echinoderms.
The circulatory system consists of three independent systems that work together: the heart, lungs, and arteries, veins, coronary, and portal vessels.
Difference between the open and closed circulatory system
Open Closed System | Closed Circulatory System |
In an open circulatory system, the hemolymph directly bathes the organs and tissues. | In the closed circulatory system, it circulates within closed vessels. |
In an open circulatory system, gases are not transported. | In a closed circulatory system, gases are transported. |
In an open circulatory system blood flow is slow. | In a closed circulatory system blood flow is slow. |
The open circulatory system is present in mollusks and arthropods. | The closed circulatory system is present in annelids and vertebrates. |
Note: In an open circulatory system, the fluid flowing in the system is called hemolymph. In a closed circulatory system fluid flowing in the system is called blood. The pioneer of gas transportation is the respiratory system.

Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
State and prove Bernoullis theorem class 11 physics CBSE

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

State the laws of reflection of light

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

1 Quintal is equal to a 110 kg b 10 kg c 100kg d 1000 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells
