The human wings provide an exchang surface for
absorbing oxygen needed for respiration
transferring carbon dioxide produced by
respiration from blood into the lungs
The trachea branches into two bro
nch The bronchi split into
smal
branchescalleder
bronchioles
Each bronchiole then leads to
tiny air sacks called alveolies
The exchange of gases occurs between the
alveoli and blood in the cappilaries that
outside
the lung s pply
cappilaries cover 701 of the
of the alveoli providing a larger sur
, ace areas for gases to diffuse across
Blood is pumped around the body by the heart
The heart has 4 chambers 2 artia
and two ventricles
Blood enters the heart through the ar
tia Blood from two canvae enters the
right atrium Blood from the pulmonary
views enters the left atrium The atria
fill followed by the ventricles Blood
s prevented from flowing back into the atria by the
heart values
absorbing oxygen needed for respiration
transferring carbon dioxide produced by
respiration from blood into the lungs
The trachea branches into two bro
nch The bronchi split into
smal
branchescalleder
bronchioles
Each bronchiole then leads to
tiny air sacks called alveolies
The exchange of gases occurs between the
alveoli and blood in the cappilaries that
outside
the lung s pply
cappilaries cover 701 of the
of the alveoli providing a larger sur
, ace areas for gases to diffuse across
Blood is pumped around the body by the heart
The heart has 4 chambers 2 artia
and two ventricles
Blood enters the heart through the ar
tia Blood from two canvae enters the
right atrium Blood from the pulmonary
views enters the left atrium The atria
fill followed by the ventricles Blood
s prevented from flowing back into the atria by the
heart values
