Houses the gills and in some mollusks it secretes a protective shell over the visceral mass.
Contains the digestive, circulatory and respiratory and reproductive organs. Depends on ciliary tracts.
A rasping, protrusible, tongue-like organ (like a mini chain saw)
THe outer organic layer. Helps protect inner layers from erosion. Secreted by a fold of the mantle edge, grows only at the margin of the shell.
Composed of densely packed prisms of calcium carbonate laid down in a protein matrix.
Lies next to the mantle and is continuously secreted by the mantle surface
Open circulatory system
Includes a pumping heart, blood vessels and blood sinuses.
Consists of several pairs of ganglia with connecting nerve cords
free swimming larva
Unique to mollusks, Has the beginnings of a foot, shell and mantle
Starting point of the shell
Spirals moving out
right handed shell
left handed shells
a plate made of tanned proteins that cover the shell aperture
Asymmetrical foot retractor muscle contracts and pulls the shell and enclosed vicera counter clock wise. This brings the anus from the posterior to the right side of the body.
Waste being washed back over gills due to anus position
the shell has all whorls on the same plane
more compactness as each whorl is to the side of the previous one
preforms most the respiration, found in mantle cavity
small opening the lungs open to
Sensory area located at the base of the incurrent siphon of most gastropods.