The incorrect statement is option D: "Circulatory system helps to think and remember."

Explanation:

- The circulatory system, also known as the cardiovascular system, is responsible for the transportation of blood, nutrients, oxygen, and waste products throughout the body. It consists of the heart, blood vessels, and blood.
- The primary function of the circulatory system is to deliver oxygen and nutrients to the body's cells and remove waste products. It helps maintain homeostasis by regulating body temperature, pH levels, and fluid balance.
- However, the circulatory system is not directly involved in the processes of thinking and remembering, which are functions of the brain.
- The brain is part of the nervous system, which is responsible for controlling and coordinating bodily activities, including cognitive functions such as thinking, memory, and learning.
- The brain receives a constant supply of oxygen and nutrients from the circulatory system to support its functioning, but the circulatory system itself does not directly influence or control thinking and memory.
- Thinking and memory are complex processes that involve the activity of neurons, which are the basic building blocks of the nervous system.
- Neurons communicate with each other through electrical and chemical signals, forming intricate networks that enable cognitive functions.
- While the circulatory system indirectly supports brain function by providing oxygen and nutrients, it does not directly contribute to the processes of thinking and memory.
- Therefore, the statement that the circulatory system helps to think and remember is incorrect.
- It is important to understand the different systems in the body and their specific functions to have a clear understanding of how they work together to maintain overall health and well-being.