Cardiovascular and Respiratory Systems

Front

What is the function of an AED?

Back

An AED (Automated External Defibrillator) is a device used to treat someone experiencing sudden cardiac arrest by delivering an electric shock to restore a normal heart rhythm.

Front

What structure does air pass through before entering the lungs?

Back

Air must pass through the trachea before entering the lungs.

Front

What is required to increase blood flow in the cardiovascular system?

Back

To increase blood flow, there needs to be an increase in the pressure gradient and a decrease in resistance.

Front

Which valve prevents backflow into the left ventricle?

Back

The aortic valve prevents backflow into the left ventricle.

Front

What happens to the diaphragm when we inhale?

Back

The diaphragm contracts when we inhale, allowing the lungs to expand.

Front

What is the role of the pulmonary valve?

Back

The pulmonary valve guards the base of the pulmonary trunk, preventing backflow into the right ventricle.

Front

What is the tricuspid valve?

Back

The tricuspid valve is a valve located between the right atrium and right ventricle of the heart.

Front

What is the difference between the mitral valve and the tricuspid valve?

Back

The mitral valve has two cusps and is located between the left atrium and left ventricle, while the tricuspid valve has three cusps and is located between the right atrium and right ventricle.

Front

What is the significance of the pressure gradient in blood flow?

Back

The pressure gradient is crucial for blood flow; a higher pressure gradient drives blood from areas of high pressure to low pressure.

Front

What is the function of the alveoli in the respiratory system?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.