Yes, when the rib cage expands, it is typically during inhalation. This expansion increases the volume of the thoracic cavity, creating a negative pressure that allows air to flow into the lungs. The diaphragm also contracts, further aiding the inhalation process. Together, these actions facilitate the intake of oxygen.
The ribs expand during inhalation. This creates negative pressure on the lungs and draws air into them. During exhalation the rib cage gets smaller, compressing the lungs, in a sense, and forcing air out.
These are the muscles that move the rib cage and they work together:Diaphragm (Prime mover of inhalation). If you need to breathe deeper you will use these:Scalenes (Elevate rib cage, assist in inhalation)Sternocleidomastoid (Elevate Rib Cage, assist in inhalation)Pectoralis minor (Elevate Rib Cage, assist in inhalation)External Intercostals (Elevate rib cage, assist in inhalation)Internal Intercostals (Depress, assist in exhalation)The diaphragm is under both voluntary control (holding your breath) and involuntary control (sleeping, reading)
it expands
During inhalation, the thoracic cavity expands as the diaphragm contracts and the rib cage moves up and out. This creates more space for the lungs to expand and fill with air.
Your diaphragm expands, your rib cage goes up, and your lungs also expand. I learned this in science.
Inhaling.
Here is the entire list:Scalenes (Elevate rib cage, assist in inhalation)Sternocleidomastoid (Elevate Rib Cage, assist in inhalation)Pectoralis minor (Elevate Rib Cage, assist in inhalation)External Intercostals (Elevate rib cage, assist in inhalation)Internal Intercostals (Depress, assist in exhalation)Diaphragm (Prime mover of inhalation)When you breathe out, or exhale, your diaphragm relaxes and moves upward into the chest cavity.The intercostal muscles between the ribs also relax to reduce the space in the chest cavity.
There are several muscles involved in breathing:Scalenes (Elevate rib cage, assist in inhalation)Sternocleidomastoid (Elevate Rib Cage, assist in inhalation)Pectoralis minor (Elevate Rib Cage, assist in inhalation)External Intercostals (Elevate rib cage, assist in inhalation)Internal Intercostals (Depress, assist in exhalation)Diaphragm (Prime mover of inhalation)When you breathe out, or exhale, your diaphragm relaxes and moves upward into the chest cavity.The intercostal muscles between the ribs also relax to reduce the space in the chest cavity.
it's called the diaphragm! but technically it expands your muscles so your lungs can expand, it doesn't expand the ribcage.
Thoracic volume increases during inhalation as the diaphragm contracts and moves downward, and the rib cage expands outward and upward. This creates more space in the thoracic cavity, allowing the lungs to expand and draw in air.
the diaphragm contracts and moves downward, and the rib cage moves upward and outward.
The rib cage expands, causing a negative pressure change in the abdominal cavity, which can only be relieved by letting air in the lungs. Exhaling is the opposite: the rib cage contracts, causing a positive pressure change, which is relieved by expelling air from the lungs.