Mollusk Anatomy

Different traits of phylum mollusca. In swimming and sessile forms however the foot is greatly reduced or greatly modified.

Mollusk Visual Dictionary

Soft bodied invertebrate animal protected by a hard shell.

Mollusk anatomy. The radula part of the odontophore may be protruded and it is used in drilling holes in prey or in rasping food particles from a surface. Mollusks are a phylum of soft bodied invertebrate animals. Gills respiratory organs located between the foot and the mantle formed of two layers of ciliated filaments which filter water and retain food particles.

Because of the great range of anatomical diversity among molluscs many textbooks start the subject of molluscan anatomy by describing what is called an archi mollusc hypothetical generalized mollusc or hypothetical ancestral mollusc ham to illustrate the most common features found within the phylum. The eyes of the giant squid are the largest in the animal kingdom almost the size of dinner plates. Genital gland producing spermatozoa sperm or ova eggs depending on the sex of the mollusk.

Digestive cavity of a mollusk. Most molluscs have a head with eyes and all have a pair of tentacles with sensors also on the head that detect chemicals vibrations and touch. Many mollusks have a hard external shell but others do not.

Mucus secreting organ of a mollusk. Organ of a molluks which performs the functions of a liver and pancreas. The anatomystructures of molluscs are complex in nature.

Anatomical characteristics of molluscs. Only some species of molluscs have a brain. Locomotion the foot is the organ of locomotion in land gastropods.

Snails clams and squids are some of the popular examples of this phylum. They have a mantle a structure of tissue that covers and encloses the dorsal portion of the animal and secretes the shell when it is present. Radula plural radulae or radulas horny ribbonlike structure found in the mouths of all mollusks except the bivalves.

Internal anatomy of a mollusk. Describe the morphology and anatomy of mollusks a large muscular foot that may be modified into tentacles but it functions in locomotion. Hard protective covering of a mollusk.

There are over 50000 different types of mollusks alive today. A budge of the esophagus of a mollusk. The morphology and anatomy of modern bivalves have been much altered from those of ancestral mollusks which had a distinct anterior end with a mouth and a posterior end with an anus figure 1.

The facts related to the anatomy physiology etc of these creatures are enlisted in the paragraphs below. The foot although the basic form of the foot is a flat broadly tapered muscular organ which is highly. Many mollusks have a hard external shell but others do not.

Animal Kingdom Mollusks Snail Anatomy Of A Snail Image