epiglottis
pleura
A spongy organ in your chest that sits inside your ribs.
lung
Your body needs oxygen to release the energy from the nutrients in your cells.
The part labeled 1
nose
The part labeled 2
mouth
Sticky material in the trachea and bronchi that trap dust and smoke particles.
mucus
The sheet of muscle under the lungs that works with the rib muscles to make breathing possible.
diaphragm
capillaries
Air is warmed, moistened, and filtered in the nose.
True
The part labeled 4
lung
The part labeled 8
trachea
Small hairs that line the respiratory tract and sweep dust and smoke away from the lungs.
cilia
It leads to both the trachea and the esophagus making it part of the digestive system and the respiratory system.
pharynx
When you breathe out, the diaphragm contracts and moves down. The rib cage gets smaller and air leaves the lungs.
False
The part labeled 6
diaphragm
The part labeled 7
pharynx
Rings of cartilage keep the ________ open so it doesn't collapse.
trachea
The part of the throat located behind the mouth and the nasal cavity and above the larynx.
pharynx
The part of the respiratory system that divides into smaller and smaller tubes that end in the alveoli.
bronchi
False
the part labeled 11
alveoli
The part labeled 12
epiglottis
The voice box
larynx
The drawing in of air into the lungs.
inhalation
During gas exchange, the substance which passes from the alveoli into the bloodstream.
oxygen
The part labeled 13
capillaries
The part labeled 3
larynx