3.6 Respiratory System Flash Cards

How does gas exchange happen in the lungs?

• Oxygen diffuses into the blood, and carbon dioxide diffuses out.

• Oxygen is actively transported into the blood while carbon dioxide is expelled.

• Gas exchange occurs through the process of osmosis in the alveoli.

• Carbon dioxide is absorbed by the blood and oxygen is released into the lungs.

How is TB diagnosed?

• By examining blood samples and performing a CT scan.

• By examining samples from the lungs or stomach and doing a chest X-ray.

• By conducting a skin test and analyzing urine samples.

• By using a throat swab and performing a MRI.

How is breathing controlled?

• The brain monitors carbon dioxide levels and adjusts breathing rate.

• Breathing is controlled by the lungs independently of the brain.

• Breathing is regulated by the heart's rhythm.

• Breathing is a reflex action that does not require brain involvement.

How does smoking affect the respiratory system?

• It increases the risk of lung cancer and other diseases by exposing the body to harmful chemicals.

• It improves lung function and increases oxygen intake.

• It has no significant effect on the respiratory system.

• It helps to clear mucus from the lungs.

How does the circulatory system support the respiratory system?

• It delivers oxygen from the lungs to cells and removes carbon dioxide.

• It transports nutrients from the digestive system to the brain.

• It circulates hormones throughout the body to regulate metabolism.

• It filters waste products from the blood before they are excreted.

How does air enter the respiratory system?

• Air enters through the mouth or nose, then goes to the trachea and lungs.

• Air enters through the skin and is absorbed by the bloodstream.

• Air enters through the ears and travels to the brain.

• Air enters through the stomach and is expelled through the mouth.

What is the role of mucus in the respiratory system?

• Mucus traps dust and helps protect the airway lining.

• Mucus increases airflow in the lungs.

• Mucus absorbs oxygen from the air.

• Mucus helps in the exchange of carbon dioxide.

How does the respiratory system help the body?

• It brings in oxygen and removes carbon dioxide through gas exchange.

• It circulates blood throughout the body.

• It helps in digestion of food.

• It produces hormones for growth.

What disease is caused by bacteria and affects the lungs?

• Pneumonia

• Asthma

• Tuberculosis (TB)

• Lung Cancer

How do we breathe?

• Breathing involves inhaling air into the lungs and exhaling it out.

• Breathing is the process of digesting food in the stomach.

• Breathing is the act of sleeping and resting.

• Breathing is the process of circulating blood through the body.