Respiratory System Quiz

What are the two main jobs of the respiratory system?

• To deliver oxygen to muscles and remove carbon dioxide

• To produce hormones and support immune function

• To regulate body temperature and remove toxins

• To deliver nutrients to cells and remove waste

Which part of the respiratory system is also known as the windpipe?

• Bronchioles

• Trachea

• Bronchi

• Alveoli

Where does gas exchange take place in the respiratory system?

• Trachea

• Diaphragm

• Bronchi

• Alveoli

What happens when the diaphragm contracts?

• It moves downwards into a flatter position

• It relaxes the intercostal muscles

• It moves upwards into a dome shape

• It expands the rib cage

Which muscles assist the respiratory system during exercise?

• Pectorals and sternocleidomastoid

• Deltoids and hamstrings

• Biceps and quadriceps

• Abdominals and triceps

What is the role of the intercostal muscles during inhalation?

• To relax and move the diaphragm

• To relax and drop the rib cage

• To contract and expand the rib cage

• To contract and move the diaphragm

What is the process called when oxygen moves from the alveoli to the bloodstream?

• Active transport

• Diffusion

• Filtration

• Osmosis

What is the concentration gradient in the context of gas exchange?

• Movement from low to high concentration

• Movement from high to low concentration

• Equal distribution of gases

• Random movement of particles

Which part of the respiratory system splits into smaller branches known as bronchioles?

• Diaphragm

• Alveoli

• Trachea

• Bronchi

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

• To support the trachea

• To filter air

• To facilitate gas exchange

• To produce mucus