Examlex
In which of the following substages of sensorimotor development do infants become intrigued by the many properties of objects and by the many things they can make happen to objects?
Alveolus
A small air sac within the lungs where the exchange of oxygen and carbon dioxide takes place during respiration.
Pulmonary Capillary
A small, thin-walled blood vessel located in the lungs where gas exchange between the blood and alveoli occurs.
Oxygen Diffusion
The movement of oxygen molecules from areas of high concentration to areas of low concentration, essential for respiratory processes in cells.
Bicarbonate Ions
Anions resulting from the dissociation of carbonic acid, playing a significant role in maintaining the body's pH balance.
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