1. Which of the following is not a function of the circulatory system?
Breaks down large molecules
delivers oxygen to blood cells
takes carbon dioxide away from body cells
**Fights infection**
srry i figured out the answer and that wasnt it
To find the answer to this question, we need to understand the functions of the circulatory system.
The circulatory system, also known as the cardiovascular system, is responsible for transporting blood, nutrients, oxygen, carbon dioxide, and hormones throughout the body. The main components of the circulatory system are the heart, blood vessels, and blood.
Now, let's examine the options:
1. Breaks down large molecules: This function is primarily performed by the digestive system, not the circulatory system. The digestive system breaks down large molecules such as carbohydrates, proteins, and fats into smaller molecules that can be absorbed by the body.
2. Delivers oxygen to blood cells: This is one of the primary functions of the circulatory system. Oxygen is transported from the lungs to the body's tissues through the bloodstream. It is necessary for cellular respiration and energy production.
3. Takes carbon dioxide away from body cells: Another important function of the circulatory system is the removal of carbon dioxide, a waste product of cellular respiration. Carbon dioxide is carried away from body cells and transported to the lungs, where it is exhaled.
4. Fights infection: This function is not directly carried out by the circulatory system. The immune system is responsible for fighting infections, including the production of antibodies and white blood cells that target pathogens.
From the given options, "Fights infection" is the function that does not belong to the circulatory system. It is the immune system's role to defend the body against infections.
Therefore, the correct answer is **Fights infection**.