Diaphragm contracts to help in ..................... while the contraction of abdominal muscles helps in....................

Explanation

### Step-by-Step Solution:

1. **Understanding the Role of the Diaphragm**: The diaphragm is a dome-shaped muscle located between the thoracic cavity (chest) and the abdominal cavity. Its primary function during breathing is to facilitate the intake of air.

2. **Diaphragm Contraction**: When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity. This decrease in pressure allows air to flow into the lungs, a process known as inspiration.

3. **Understanding the Role of Abdominal Muscles**: The abdominal muscles play a significant role in the process of breathing as well, particularly during forced expiration.

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