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DIFFUSION is the process by which molecules move from regions where they
are in a high concentration to regions where they are in a lower concentration until
the molecules are evenly distributed throughout the medium.
Molecules are constantly
Six Types of Synovial Joints with Lab Activity 11. Palpate the following synovial joints on your body and use an articulated skeleton to
observe the structure of the joint
Planar (gliding) flex your arm up and feel the gliding movement at the
The amounts of O2 and CO2 vary in inspired (atmospheric), alveolar, and expired air.
External Respiration (Fig 23.17)
o O2 and CO2 diffuse from areas of their higher partial pressures to areas of their
lower partial pressures
o Gas exch
Receptors are parts of the nervous system that allow it to:
A. initiate responses to information.
B. process information.
C. collect information.
D. conduct impulses to muscles.
The nervous system controls the activity of muscles and glands. Muscles and g