What is the function of the respiratory system?
Breaking down food for it to be used by the body.
Holding up the body and giving it support and shape.
Gas exchange between the external environment and the body's circulatory system.
Producing hormones that regulate metabolism, growth, sleep, reproduction, etc.
What is the diaphragm?
An organ in the neck that helps with respiration and sound production
A tube that connects the pharynx and larynx to the lungs, allowing the passage of air
A tiny sac in the lungs that allows gaseous exchange in and out of the body
A large muscle that separates the chest cavity from the abdominal cavity and helps with breathing.
Inside each of your lungs there are tubes called bronchi. These branch into even smaller tubes much like the branches of a tree. What are at the ends of these tubes?
Alveoli
Bronchioles
Capillaries
Villi