Which of the following is a transport function of the cardiovascular system?

Which of the following is a transport function of the cardiovascular system?

• A. Transport enzymes + hormones to control physical function
• B. Produce insulin
• C. Filter toxins from blood
• D. Regulate digestion

Answer: (A)

The main function tested is how the cardiovascular system distributes signals and other substances through the body. Blood serves as the delivery network that carries hormones released by glands to distant tissues, where they regulate metabolism, growth, and responses to activity. This transport role is what the cardiovascular system does—moving chemical messengers to where they’re needed. Producing insulin is a secretory function of the pancreas, not a transport job of the heart and vessels. Filtering toxins from the blood is the domain of organs like the liver and kidneys, not the circulatory system’s transport duties. Regulating digestion is handled by the digestive system itself.

The main function tested is how the cardiovascular system distributes signals and other substances through the body. Blood serves as the delivery network that carries hormones released by glands to distant tissues, where they regulate metabolism, growth, and responses to activity. This transport role is what the cardiovascular system does—moving chemical messengers to where they’re needed.

Producing insulin is a secretory function of the pancreas, not a transport job of the heart and vessels. Filtering toxins from the blood is the domain of organs like the liver and kidneys, not the circulatory system’s transport duties. Regulating digestion is handled by the digestive system itself.