Examlex
Serum is identical in composition to plasma; that is, both contain all the components of blood except for the blood cells.
Insertion
An attachment site of a skeletal muscle that moves when a muscle contracts.
Antagonist
A substance that opposes or inhibits the action of another, especially in pharmacology or biochemistry.
Dorsiflexion
The movement that brings the top of the foot toward the shin, a pivotal motion in walking, running, and other activities.
Extension
An unbending or straightening movement of the two elements of a jointed body part.
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