Keyword: "fresh water clam"

Internal structures of the body of a clam.

Internal structures of the body of a clam, side view.

Cross section of the body of a clam, through the heart. Arrows indicate water current through the gills.

Cross section of the body of a clam, through the posterior adductor muscles. Arrows indicate water current…

Digestive and excretory organs of a clam.

The nervous system of a clam.

Young clam, still within the egg membrane. m, adductor muscle; t, hooks by which it attaches itself…

Long clam, buried in the mud. The arrows show the currents in the siphons.

Hard clam; round clam; Quahog, with foot, siphons and edge of mantle extended.

The razor shell clam has a shell somewhat resembling in shape and size the handle of a razor.

Structure of a clam's gill. Arrows indicate water currents through the gills.

External features of a clam shell.

Inside of right valve of clam shell.

Clam in natural position with foot and siphons extended.

Mechanism for opening and shutting a clam shell, note the internal and external hinge ligament..

Structure of a clam shell.

Clipart tagged: ‘fresh water clam’