Does the brain send electrical messages to chest and bronchi for breathing in out occur?

The brain does not send electrical messages directly to the chest and bronchi for breathing in and out. Instead, the brain sends signals to the respiratory muscles, such as the diaphragm and the intercostal muscles, which are responsible for the physical process of breathing.

Here's a brief explanation of how the brain controls breathing:

1. Breathing Center: The brain has a specialized area called the respiratory center, located in the medulla oblongata. This area is responsible for controlling the rhythm and rate of breathing.

2. Neural Pathways: The respiratory center sends neural signals through the phrenic and intercostal nerves to the respiratory muscles.

3. Diaphragm and Intercostal Muscles: The diaphragm is a large muscle that separates the chest cavity from the abdominal cavity. The intercostal muscles are located between the ribs. These muscles contract and relax to control the volume of the chest cavity.

4. Inhaling: When the respiratory center sends signals to the diaphragm and intercostal muscles, these muscles contract. The diaphragm moves downward, and the intercostal muscles lift the ribcage. This increases the volume of the chest cavity, causing air to flow into the lungs.

5. Exhaling: When the respiratory center decreases signals to the diaphragm and intercostal muscles, these muscles relax. The diaphragm moves upward, and the ribcage lowers. This reduces the volume of the chest cavity, causing air to be pushed out of the lungs.

So, while the brain doesn't directly send electrical messages to the chest and bronchi, it controls breathing by sending signals to the respiratory muscles, which then perform the mechanical actions of inhaling and exhaling.