Respiration and Circulation

Front

What is the role of the epiglottis?

Back

To prevent the entry of food into the trachea during swallowing.

Front

What condition causes constriction of bronchioles?

Back

Asthma.

Front

What is the normal breathing rate in adults?

Back

12 to 20 times per minute.

Front

What is the fluid found in intercellular spaces in humans?

Back

Interstitial fluid.

Front

What is the residual volume in the lungs?

Back

1100-1200 mL.

Front

What is the primary function of the respiratory system?

Back

To facilitate gas exchange (oxygen and carbon dioxide) between the body and the environment.

Front

What is the difference between tidal volume and vital capacity?

Back

Tidal volume is the amount of air inhaled or exhaled during normal breathing, while vital capacity is the maximum amount of air a person can exhale after a maximum inhalation.

Front

What is the function of alveoli in the lungs?

Back

To provide a large surface area for gas exchange.

Front

What is the significance of hemoglobin in respiration?

Back

Hemoglobin binds to oxygen in the lungs and transports it to tissues throughout the body.

Front

What is the role of the diaphragm in breathing?

Back

The diaphragm contracts and flattens to create a vacuum that draws air into the lungs.