RESPIRATORY SYSTEM
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Transcript RESPIRATORY SYSTEM
AISD - 2009
COMPARATIVE ANATOMY:
ANIMAL BODY SYSTEMS:
RESPIRATORY SYSTEM
Respiratory System
Function: to provide oxygen gas
need for cellular respiration and
remove carbon dioxide from the
body
Invertebrate Organs:
◦ gills and trachae
Main Vertebrate Organs:
◦ Nose, mouth, pharynx, larynx, trachea,
bronchi, bronchioles, lungs, gills, diaphragm
Respiration in animals
Whether they live in water or on land, all
animals must respire.
◦ To respire means to take in oxygen and give off
carbon dioxide.
Some animals rely of simple diffusion through
their skin to respire.
While others…
Have developed large complex organ systems
for respiration.
Figure 29–9 Invertebrate Respiratory
Section 29-2
Systems
Gill
Tracheal
tubes
Siphons
Movement of water
Insect
Mollusk
Airflow
Spider
Book
lung
Spiracles
Aquatic Gills
Water flows
through the mouth
then over the gills
where oxygen is
removed
Carbon dioxide
and water are then
pumped out
through the
operculum
Vertebrate lungs
As you move from amphibians to mammals the
surface area of the lungs increases
◦ Insures a greater amount of gas exchange (or a two
way flow of air).
Birds, by contrast have lungs and air sacs which
have only a one-way flow of air.
◦ This allows for them to have constant contact with
fresh air.
◦ This adaptation enables them to fly at high altitudes
where there is less oxygen.
Figure 33–10:Vertebrate Lungs
Section 33-3
Nostrils, mouth, and throat
Trachea
Lung
Air sac
Salamander
Lizard
Primate
Pigeon
Figure 37-13 The Respiratory System
The Human Respiratory System
Section 37-3