Draw a well labelled diagram of excretory system and explain the process of urine formation in human being.

Explanation

### Step-by-Step Solution:

#### Step 1: Draw the Excretory System Diagram
1. **Kidneys**: Draw two bean-shaped structures representing the kidneys. Label them as "Kidneys."
2. **Ureters**: Draw two tubes extending downward from each kidney. Label them as "Ureters."
3. **Urinary Bladder**: Draw a storage sac below the ureters. Label it as "Urinary Bladder."
4. **Urethra**: Draw a tube extending from the urinary bladder to the outside of the body. Label it as "Urethra."
5. **Blood Vessels**: Draw a large artery leading to each kidney (label as "Renal Artery") and a large vein leading away from each kidney (label as "Renal Vein"). You can also label the deoxygenated blood vessel as "Vena Cava."
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