Which of the following statements is incorrect ?

Options

A. Veins are typically larger in diameter than arteries
B. Because of their small size, blood flows more rapidly in capillaries than in other parts of circulatory system
C. Wall of arteries are elastic enabling them to stretch and shrink during changes in blood pressure
D. Veins contain more blood than any other part of circulatory system

Explanation

To determine which statement is incorrect, we will analyze each statement one by one.

### Step 1: Analyze the first statement
**Statement:** "Veins are typically larger in diameter than arteries."
- **Analysis:** This statement is true. Veins have a larger diameter compared to arteries. Arteries are generally narrower as they carry blood away from the heart under high pressure, while veins return blood to the heart at lower pressure.

### Step 2: Analyze the second statement
**Statement:** "Because of their small size, blood flows more rapidly in capillaries than in other parts of the circulatory system."
- **Analysis:** This statement is incorrect. Capillaries are actually the smallest blood vessels, and blood flows more slowly in capillaries compared to arteries and veins. This slower flow allows for the exchange of nutrients and waste products between blood and tissues.

### Step 3: Analyze the third statement
**Statement:** "Walls of arteries are elastic, enabling them to stretch and shrink during changes in blood pressure."
- **Analysis:** This statement is true. The walls of arteries are indeed elastic, which allows them to accommodate the fluctuations in blood pressure as the heart beats.

### Step 4: Analyze the fourth statement
**Statement:** "Veins contain more blood than any other part of the circulatory system."
- **Analysis:** This statement is true. Veins serve as a reservoir for blood and contain more blood volume compared to arteries and capillaries.

### Conclusion
After analyzing all the statements, we find that the second statement is incorrect.

### Final Answer
The incorrect statement is: "Because of their small size, blood flows more rapidly in capillaries than in other parts of the circulatory system."

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