Mekanisme Inspirasi dan Ekspirasi Pernafasan Dada dan Pernafasan Perut

Summary

This video discusses the mechanisms of chest and abdominal breathing, focusing on two key phases: inspiration (inhalation) and expiration (exhalation). During chest breathing, the intercostal muscles contract, lifting the ribcage, expanding the chest cavity, and decreasing air pressure in the lungs, causing air to flow in. In abdominal breathing, the diaphragm contracts and flattens, enlarging the chest cavity similarly. Expiration is the reverse process, with muscles relaxing, decreasing the chest cavity, and expelling air. The video also highlights differences in diaphragm movement between chest and abdominal breathing.

Takeaways

• 😀 Inspiration is the process of taking air into the lungs, while expiration is the process of releasing air from the lungs.
• 😃 During inspiration in chest breathing, the intercostal muscles contract, causing the ribs to lift and the chest cavity to expand.
• 😄 When the chest cavity expands during inspiration, the lungs also expand, leading to lower air pressure inside the lungs compared to the outside air, allowing air to flow into the lungs.
• 😁 Expiration in chest breathing involves the relaxation of the intercostal muscles, which lowers the ribs and reduces the chest cavity size, pushing air out of the lungs.
• 😆 In abdominal breathing, the diaphragm muscle is key. During inspiration, the diaphragm contracts and flattens, expanding the chest cavity and allowing air to enter the lungs.
• 😅 When the diaphragm relaxes during expiration, it returns to its original dome shape, reducing the chest cavity's volume and forcing air out of the lungs.
• 😊 Chest breathing mainly involves the rib muscles, while abdominal breathing relies on the diaphragm for air movement.
• 😎 The pressure difference between the inside and outside of the lungs during both inspiration and expiration causes air to move in and out of the lungs.
• 🤓 In chest breathing, the ribs lift during inspiration and lower during expiration. In abdominal breathing, the diaphragm flattens during inspiration and curves upward during expiration.
• 🤩 The mechanics of both chest and abdominal breathing involve inspiration to bring in air and expiration to release it, driven by muscle contractions and relaxations.

Q & A

What is the main difference between chest breathing and abdominal breathing?

The main difference is that chest breathing uses the intercostal muscles and rib movement, while abdominal breathing primarily involves the diaphragm muscle.

What happens during the inspiration phase of chest breathing?

During inspiration in chest breathing, the intercostal muscles contract, causing the ribcage to lift and the chest cavity to expand. This expansion reduces the air pressure inside the lungs, causing air to flow in.

What is the role of the diaphragm during abdominal breathing?

During abdominal breathing, the diaphragm contracts and flattens, increasing the space in the chest cavity and allowing the lungs to expand, which helps air to flow in.

How does air flow into the lungs during inspiration?

Air flows into the lungs because the expansion of the chest or abdominal cavity lowers the air pressure inside the lungs, which becomes lower than the outside air pressure, causing air to move into the lungs.

What occurs during the expiration phase of chest breathing?

During expiration in chest breathing, the intercostal muscles relax, causing the ribcage to lower and the chest cavity to shrink. This increases the air pressure inside the lungs, forcing air out.

How does the diaphragm behave during expiration in abdominal breathing?

During expiration in abdominal breathing, the diaphragm relaxes and returns to its dome-shaped position, reducing the chest cavity space and pushing air out of the lungs.

Why does air leave the lungs during expiration?

Air leaves the lungs during expiration because the reduction in chest or abdominal cavity size increases the pressure inside the lungs, making it higher than the outside air pressure, which forces air out.

What is the role of air pressure differences in the breathing process?

Air pressure differences between the inside of the lungs and the outside environment drive the movement of air in and out of the lungs. During inspiration, lower pressure inside the lungs causes air to enter, while during expiration, higher pressure forces air out.

How is the chest cavity affected during inspiration and expiration in chest breathing?

During inspiration, the chest cavity expands as the ribcage lifts, allowing the lungs to expand. During expiration, the chest cavity shrinks as the ribcage lowers, pushing air out of the lungs.

What is the role of the intercostal muscles in breathing?

The intercostal muscles, located between the ribs, contract during inspiration to lift the ribcage and expand the chest cavity, and relax during expiration to lower the ribcage and reduce the chest cavity size.