air		bone-like substance
cavity		bronchial _______
left		carries oxygen
alveolus		Thick fluid in sinuses
heart		let air out
exhaled		alveoli
ribs		Lung with two lobes
oxygen		membranes
right		element we need to live
mouth		vessels to heart
air sacs		part of lung
diaphragm		Lung with three lobes
automatic		describes breathing
pleura		protects lungs and heart
trachea		opening for air
cilia		tiny air sac of the lung
veins		organs for breathing
tubes		using air
lungs		describes sinuses
cartilage		tiny hairs
lobe		four chambered organ
breathing		what we breathe
alveoli		air sacs
mucus		windpipe
blood		Strong breathing muscles