Examlex
Osmotic pressure is the pressure that builds up inside a cell and resists net water movement across its membrane.
Sarcomere
The fundamental unit of muscle fiber responsible for muscle contraction, defined by the area between two Z lines in striated muscle cells.
Actin Myofilament
A protein filament that, along with myosin, plays a role in muscle contraction and cell movement.
Z Disk
A structure within the sarcomere of muscle fibers that serves as the attachment site for actin filaments, marking the boundary between sarcomeres.
Sarcomere
The structural unit of a muscle fiber, consisting of a repeating sequence of actin and myosin filaments, responsible for muscle contraction.
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