Front

What is the membrane that encloses the heart?

Back

Pericardium

Front

What divides the nasal chamber into two parts?

Back

Mesethermoid cartilage

Front

What is the normal breathing rate in adults?

Back

12-20 times per minute

Front

What is the fluid found in intercellular spaces in humans?

Back

Interstitial fluid

Front

What is the sound-producing organ in the human body?

Back

Larynx

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 role of the diaphragm in respiration?

Back

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

Front

What is the difference between pulmonary and systemic circulation?

Back

Pulmonary circulation carries deoxygenated blood from the heart to the lungs, while systemic circulation carries oxygenated blood from the heart to the rest of the body.

Front

What is the function of red blood cells?

Back

To transport oxygen from the lungs to the body's tissues and carry carbon dioxide back to the lungs.

Front

What is the significance of the alveoli in the lungs?

Back

Alveoli are tiny air sacs where gas exchange occurs between the air and blood.