Multiple Choice
Which type of blood vessel is responsible for carrying blood back to the heart?
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40. Circulatory System
Circulatory and Respiratory Anatomy
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How is the circulatory system related to the digestive system?
A
The circulatory system directly absorbs nutrients through its blood vessels in the stomach.
B
The circulatory system produces digestive enzymes that break down food.
C
The circulatory system transports absorbed nutrients from the digestive tract to the rest of the body.
D
The circulatory system controls the movement of food through the intestines.
Verified step by step guidance1
Understand the role of the circulatory system: The circulatory system is responsible for transporting substances like oxygen, nutrients, and waste products throughout the body via blood vessels.
Understand the role of the digestive system: The digestive system breaks down food into smaller molecules, such as glucose, amino acids, and fatty acids, which can be absorbed into the bloodstream.
Identify the connection between the two systems: After food is digested in the digestive system, the nutrients are absorbed into the bloodstream through structures like the small intestine's villi.
Explain the transport process: The circulatory system carries these absorbed nutrients to cells and tissues throughout the body, where they are used for energy, growth, and repair.
Clarify misconceptions: The circulatory system does not produce digestive enzymes or control food movement in the intestines; its primary role is nutrient transport after absorption.
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