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mantle (mollusc) and mantle cavity; body wall propodium; caudal mucous pit; nidamental gland; Parapodium#Gastropod parapodia; Semper's organ; suprapedal gland; snail slime; sensory organs of gastropods. caryophyllidia; Hancock's organ; osphradium; rhinophore; nervous system of gastropods. euthyneury; streptoneury; torsion (gastropod) digestive ...
Respiration involves drawing water into the mantle cavity through an aperture, passing it through the gills, and expelling it through the siphon. The ingress of water is achieved by contraction of radial muscles in the mantle wall, and flapper valves shut when strong circular muscles force the water out through the siphon. [42]
The mantle cavity is a central feature of molluscan biology. This cavity is formed by the mantle skirt, a double fold of mantle which encloses a water space. This space contains the mollusk's gills, anus, osphradium, nephridiopores, and gonopores. The mantle cavity functions as a respiratory chamber in most mollusks. In bivalves it is usually ...
The mantle is visible between the open valves. A mollusc shell is formed, repaired and maintained by a part of the anatomy called the mantle. Any injuries to or abnormal conditions of the mantle are usually reflected in the shape and form and even color of the shell.
The thin-walled mantle of the wunderpus has weak musculature and wide aperture. [5] The head has a distinct neck area and is Y-shaped with the eye on each branch of the 'Y'. The head of a male wunderpus is wider than its mantle and for female wunderpus, their mantle is wider than their head. For females, this is due to the large ovary in their ...
The common octopus (Octopus vulgaris) is a mollusk belonging to the class Cephalopoda. Octopus vulgaris is one of the most studied of all octopus species, and also one of the most intelligent. It ranges from the eastern Atlantic, extends from the Mediterranean Sea and the southern coast of England , to the southern coast of South Africa.
The longitudinal muscles run parallel to the length of the octopus and they are used in order to keep the mantle the same length throughout the jetting process. Given that they are muscles, it can be noted that this means the octopus must actively flex the longitudinal muscles during jetting in order to keep the mantle at a constant length.
Octopus mating occurs through the use of the hectocotylus. The hectocotylus is a male body part which is inserted into the mantle of a female octopus. The hectocotylus then releases spermatophores into the oviducts. Eggs are fertilized upon exiting the oviducts.