Hinge ligaments
muscles :)
The opening and closing of a mussel's shell are primarily controlled by a pair of adductor muscles. These muscles contract to close the shell tightly, protecting the mussel from predators and environmental stressors. When the muscles relax, the shell can open to allow for feeding and respiration. Additionally, environmental factors such as water currents and the presence of threats can influence the behavior of these muscles.
SCALLOP
push rods connected to the camshaft
the adavctor muscle
An edible bivalve mollusk (family Pectinidae) with a ribbed fan-shaped shell. Scallops swim by rapidly opening and closing the shell valves.
The opposite of opening would be closing or shutting.
The adductor muscles control the opening and closing of the clam valves. When these muscles contract, the valves close, and when they relax, the valves open. Clams use this mechanism to protect themselves from predators and regulate their internal environment.
The valve in a sink faucet controls the flow of water by opening and closing to regulate the water pressure and temperature.
by opening their mouths then closing it then opening it again, then closing it:-)
the ribs of a sea turtle are attached to the shell and so they sea turtle breathes by opening and closing his/hers legs.
opening is 1500 n closing is 4889