Respiratory and circulatory systems for homeostasis, bronchi etc

The circulatory system transports:

• Blood

• Waste products

• Oxygen

• Supplies and nutrients

The respiratory system is where:

• Gas exchange occurs

• Oxygen is picked up from inhaled air

• Carbon dioxide is expelled from exhaled air

• Water vapor is expelled

Which part of your body closes the entrance to the trachea, to keep food or saliva from entering the airways, when we swallow?

• Epiglottis

• Nose

• Mouth

• Sinus

In the lungs, the trachea splits into two ................

• Epiglottis

• Bronchi

• Bronchioles

• Alveoli

The tiny air sacs where gas exchange actually occurs:

• Epiglottis

• Bronchi

• Bronchioles

• Alveoli