The process by which additional metabolic wastes are provided by the tubular cells to the filtrate is known as `"________"`

Explanation

To solve the question regarding the process by which additional metabolic wastes are provided by the tubular cells to the filtrate, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Filtration Process**: The first step in urine formation is glomerular filtration, where blood is filtered in the glomerulus, and a filtrate is formed that enters the Bowman's capsule.

2. **Movement to the Renal Tubule**: After glomerular filtration, the filtrate moves into the proximal convoluted tubule (PCT) of the nephron.

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