Name the cortical portions projecting between the medullary pyramids in the human kidney.

Explanation

To answer the question about the cortical portions projecting between the medullary pyramids in the human kidney, follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Kidney**:
- The human kidney is divided into two main regions: the outer cortex and the inner medulla. The medulla contains structures known as pyramids.

2. **Identify the Medullary Pyramids**:
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