Definitions

1. The operculum is a fibrous door (shown above) which seals the opening of the shell when the snail withdraws inside.
2. The operculum is a disk attached to the upper side of the hinder part of the "foot" of the mollusc.
3. The operculum is a leathery brown color, the aperture is orange, and the animal itself is brick red in color.
4. Operculum (gastropod), a lid on the shell of some gastropods.
5. The operculum is a cover used to close the aperture when the snails are withdrawn into their shells.

Operculum

1. Observe that most of the cortex of this gyrus faces upward, forming the inferior bank of the lateral sulcus, which is also the temporal operculum. (Web site)
2. The SUPERIOR TEMPORAL GYRUS forms the inferior margin of the lateral sulcus, the temporal operculum. (Web site)
3. Operculum.— The HG arose immediately posterior to the PLG in all cases. (Web site)
4. Operculum -That part of the cortex, chiefly of the parietal lobe, which overhangs the insula.
5. The subcentral and supramarginal gyri formed the frontoparietal operculum overhanging the posterior lobule in all cases. (Web site)

Frontal Operculum

1. The frontal operculum is of small size in those cases where the anterior horizontal and ascending rami of the lateral fissure arise from a common stem. (Web site)
2. Meaning of dental operculum.
3. WOROI: 669 - Inferior frontal operculum (Opercular part of inferior frontal gyrus). (Web site)
4. The portions of the various lobes that overly the insular cortex is termed the operculum. (Web site)
5. Overlying Opercula.— The frontal operculum overlay the anterior lobule of the insula in all cases ( Figs 5 and 6). (Web site)

Sylvian

1. The parietal operculum forms the superior wall of sylvian fissure.
2. The ventral nucleus sends fibers to the insula and the operculum, and to the region which bounds the Sylvian or lateral fissure.
3. Further rostrally, SLF II remains above the Sylvian operculum and lateral to the corona radiata.

Dictionary

1. Definition of operculum in the Medical Dictionary.
2. Information about operculum in Free online English dictionary.
3. Definition of operculum in the Online Dictionary.

Lid

1. In biology, operculum (Latin for "little lid") has been used to describe several different anatomical features, in animals, in humans and even in plants. (Web site)
2. Operculum (gastropod), a lid on the shell of some gastropods.
3. The shell of species belonging to genus Limacina is unique because it contains an operculum which acts as a lid or cover at the bottom of the shell. (Web site)
4. The portion of a given lobe overlying the insula is called an operculum (L. lid). (Web site)
5. The cortical area overlying it towards the lateral surface of the brain is the operculum (meaning "lid"). (Web site)

Bony

1. This opening is hidden beneath a protective bony cover called an operculum.
2. Operculum (fish), a flap of the bony fish covering the gills.

Base

1. The nits of the canine biting louse are protected by an operculum and are cemented to the base of the dog's hairs. (Web site)
2. The superior longitudinal fasciculus lies on the outer side of the corona radiata in the base of the fronto-parietal operculum.

Family

1. Pomacentridae (New Latin, from Greek "poma" operculum + "kentron" sting) is a family of perciform fish, comprising the damselfishes and clownfishes.

Cortex

1. There were changes in the gyral pattern that were restricted mainly to the cortex on the operculum.

Foot

1. Language function, foot of the third frontal gyrus, and rolandic operculum. (Web site)

Capsules

1. Used of capsules which have no regularly dehiscent lid or operculum.

Body

1. Members of Opisthobranchia have gone through a complete detorsion of the body and have lost the protective shell as well as the operculum. (Web site)

Seal

1. In some gastropod molluscs the operculum is used to seal the shell when the animal has withdrawn inside.

Lack

1. The differences are that Angophora have opposite leaves rather than alternate, and lack a bud cap or operculum. (Web site)

Genus

1. As the stamens expand, the operculum is forced off, splitting away from the cup-like base of the flower; this is one of the features that unites the genus. (Web site)

Portion

1. The opercular part, which is most posterior and forms a portion of the frontal operculum; and 3.

Central Portion

1. Rolandic arteries (central): The artery extends out and exits from the central portion of the operculum, then passing inside the central sulcus.

Spores

1. A unitunicate-operculate ascus has a "lid", the Operculum, which breaks open when the spores ripen and in this way sets them free. (Web site)

Species

1. In those species where the operculum completely seals the shell, it can serve as a protection against predators when the snail body is retracted.
2. Most species have a shell, but no operculum, although the group does also include several shell-less slugs. (Web site)
3. In species of conches, the operculum is claw-shaped, and can be used to dig into the sand to enable the conch to perform a sort of leaping locomotion.

Bony Fish

1. In bony fish, the gills lie in a branchial chamber covered by a bony operculum. (Web site)

Lateral Sulcus

1. Portions of the frontal, parietal, and temporal lobes, which are adjacent to the lateral sulcus and overlie the insular cortex, are known as the operculum.
2. Observe that most of the cortex of this gyrus faces upward, forming the inferior bank of the lateral sulcus, which is also the temporal operculum. (Web site)

Outgrowths

1. Prey access is increased by the 'fangs' (outgrowths of the operculum), which give the plant its name.

Apple Snails

1. Ampullariidae, common name the apple snails, is a family of large freshwater snails, aquatic gastropod mollusks with a gill and an operculum.

Swim Bladder

1. Fish anatomy includes a two-chambered heart, operculum, secretory cells that produce mucous, swim bladder, scales, fin s, lip s and eye s. (Web site)

Present

1. Eucalyptus sideroxylon, showing fruit (capsules) & buds with operculum present. (Web site)

Aperture

1. In some prosobranch gastropods, the aperture of the shell can be closed, and even completely sealed, with a sort of door or operculum.

Cover

1. The name Eucalyptus, from the Greek words eu-, well, and kaluptos, cover, meaning "well-covered", describes the operculum.

Flap

1. OPERCULUM - Flap of tissue over an unerupted or partially erupted tooth. (Web site)

Medical Dictionary

1. Definition of operculum in the Medical Dictionary.

Small

1. Rissooidea is a superfamily of small and minute saltwater and freshwater snails with an operculum.

Pectoral Fins

1. The paired pectoral fins are located on each side, usually just behind the operculum, and are homologous to the forelimbs of tetrapods.

Ascospores

1. The unitunicate ascus sometimes has an operculum (a small lid), which opens to liberate the ascospores when the ascus is mature.

Asci

1. The order Helotiales has inoperculate asci-- this means that their asci (which bear the ascospores) do not open by a hinged lid called an operculum.
2. Members of this order are characterize d by asci that typically open by rupturing to form a terminal or eccentric lid or operculum. (Web site)

Pulmonates

1. Prosobranchs have an operculum (lacking in pulmonates), and most have a spirally coiled shell. (Web site)

Hermaphroditic

1. The pulmonates almost always lack an operculum and are hermaphroditic.

Close

1. Most sea snails have a lid-like part, called an operculum, which serves to close the entrance. (Web site)

Opisthobranchs

1. Opisthobranchs usually lack a mantle cavity, and they also usually have no operculum.

Gills

1. In bony fish, the gills are covered by a bony cover called an operculum. (Web site)

Shells

1. Mollusks pull the soft portion of their bodies into their shells and seal the entry with their operculum. (Web site)

Shell

1. Some apple snails have a "door" or operculum to close the shell when they withdraw, for protection from predators as well as to avoid desiccation.
2. Opisthobranchs are principally soft-bodied marine creatures with a reduced or absent shell and no operculum and utilize other methods for protection. (Web site)
3. This group was previously included within the "Archaeogastropoda." The shell is never nacreous and an operculum is present in adults.

Snail

1. In many, but by no means all prosobranchs, the snail can completely close the aperture with the operculum when the body is retracted into the shell. (Web site)

Snails

1. Many snails have an operculum, a horny plate that seals the opening when the snail's body is drawn into the shell. (Web site)
2. The operculum varies in shape, depending on the family of snails and the shape of the aperture of their shells. (Web site)
3. These snails have an operculum, unlike the Pulmonata, which do not. (Web site)

Gastropod

1. The larval form possesses all the ancestral characteristics of a gastropod, including a shell, an operculum, and a mantle cavity. (Web site)

Gastropods

1. Gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares.
2. An operculum can vary in shape greatly from one family of gastropods to another, but an operculum is fairly often circular, or more or less oval in shape. (Web site)

Categories

1. Life > Animals > Molluscs > Gastropods
2. Snails
3. Shell
4. Gills
5. Glossaries > Glossary of Cerebrum /
6. Books about "Operculum" in Amazon.com
   

Continue: More Keywords - - - - - - - - - -