Which organ is part of circulatory system but does not take part in pumping ?

Options

A. Heart
B. Liver
C. Spleen
D. Kidney

Answer

To solve the question "Which organ is part of the circulatory system but does not take part in pumping?", we can follow these steps:

### Step 1: Understand the circulatory system
The circulatory system consists of the heart, blood vessels, and blood. Its primary function is to transport nutrients, gases, hormones, and waste products throughout the body.

### Step 2: Analyze the options
We have four options to consider: heart, liver, spleen, and kidney.

### Step 3: Evaluate each option
- **Heart**: The heart is a muscular organ that pumps blood throughout the body. Therefore, it is involved in the pumping action of the circulatory system. This option is incorrect.

- **Liver**: The liver plays a role in various metabolic processes and produces bile, but it does not pump blood. However, it is not primarily known as a pumping organ. Still, it is not correct to say it does not participate in the circulatory system's functions. This option is also incorrect.

- **Kidney**: The kidneys filter blood and produce urine, which involves the movement of fluids, but they do not pump blood. However, they are still part of the circulatory system as they filter blood. This option is incorrect.

- **Spleen**: The spleen is a lymphoid organ that is part of the circulatory system. Its functions include recycling iron from red blood cells and storing blood, but it does not actively pump blood. This option is correct.

### Step 4: Conclusion
Based on the evaluation of the options, the organ that is part of the circulatory system but does not take part in pumping is the **spleen**.

### Final Answer
The correct answer is **spleen**.

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