Lungs

What happens during exhalation?

• The diaphragm contracts and moves down, pulling air into the lungs.

• The diaphragm relaxes and moves up, pushing air out of the lungs.

• The rib cage expands, allowing more air to enter the lungs.

• The lungs fill with air, increasing pressure in the chest cavity.

What is the relationship between breathing and heart rate?

• Deep breathing can help lower heart rate by promoting relaxation and reducing stress.

• Breathing has no effect on heart rate.

• Increased breathing rate always increases heart rate.

• Deep breathing increases heart rate due to increased oxygen intake.

What happens during inhalation?

• The diaphragm contracts and moves down, allowing the lungs to expand and fill with air.

• The diaphragm relaxes and moves up, pushing air out of the lungs.

• The rib cage collapses, reducing the volume of the lungs.

• The lungs fill with carbon dioxide instead of oxygen.

What is oxygenated blood?

• Blood that has picked up oxygen from the lungs and is rich in oxygen.

• Blood that is low in oxygen and high in carbon dioxide.

• Blood that is found in the veins and carries waste products.

• Blood that is produced in the liver and helps in digestion.

What is the importance of chest muscles during inhalation?

• They help to compress the lungs, forcing air out.

• They assist in lifting the rib cage, allowing the lungs to expand more fully.

• They are not involved in the process of breathing.

• They help to stabilize the diaphragm during exhalation.

What is the role of the intercostal muscles?

• They help expand and contract the chest during breathing.

• They support the spine and maintain posture.

• They assist in the movement of the arms and legs.

• They protect the internal organs from injury.

What are the lungs?

• Two large organs in the chest that help us breathe by taking in oxygen and removing carbon dioxide.

• Small sacs in the abdomen that store air.

• Muscles that control the movement of the diaphragm.

• The main organs for digestion in the body.

What is deoxygenated blood?

• Blood that is rich in oxygen and is being delivered to the body's tissues.

• Blood that has delivered its oxygen to the body's tissues and is returning to the lungs to release carbon dioxide.

• Blood that is found in the arteries and carries nutrients to the body.

• Blood that has not yet reached the lungs and is still carrying carbon dioxide.

What is the main function of the lungs?

• To pump blood throughout the body.

• To exchange gases, bringing oxygen into the body and expelling carbon dioxide.

• To filter toxins from the blood.

• To regulate body temperature.

What is the diaphragm?

• A dome-shaped muscle located below the lungs that plays a crucial role in breathing.

• A type of bone found in the human body.

• A membrane that separates the chest from the abdomen.

• A gland that produces hormones for digestion.