The question asks to identify the main transport system in animals responsible for moving substances throughout the body.
Based on the functions, the circulatory system is the primary network responsible for the transport of essential materials throughout an animal's body, making it the main transport system.
______ are the vessels which carry carbon dioxide-rich blood back to the heart.
Which of the following is the largest artery of the human body?
Which valve is present in the junction of right artery and ventricle in a human heart?
The lateral ventricles remain in communication with the third ventricle by a small opening called _____.
Which organ is known as graveyard of RBC?