Examlex
Which of the following categories includes manatees and dugongs?
Neuron
A specialized cell transmitting nerve impulses; a nerve cell.
Muscle Fiber
A single muscle cell, known for its long, cylindrical shape and role in contracting to facilitate body movement.
Sarcomere
The fundamental unit of muscle fiber responsible for muscular contraction, delineated by Z lines.
Thick Filaments
Protein structures in muscle fibers responsible for muscle contraction.
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