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Sessile animals can move via external forces (such as water currents), but are usually permanently attached to something. Organisms such as corals lay down their own substrate from which they grow. Other animals organisms grow from a solid object, such as a rock, a dead tree trunk, or a human-made object such as a buoy or ship's hull.
Accurately identifying stones, biliary strictures, and affected liver segments is crucial for the diagnosis of hepatolithiasis, as is ruling out concurrent cholangiocarcinoma. [2] Hepatolithiasis is primarily diagnosed by abdominal ultrasonography (USG) and computed tomography (CT) scans.
Such stones are thought to be the result of stones missed at the time of the cholecystectomy, as opposed to the formation of new stones. [3] The diagnosis of choledocholithiasis is suggested when the liver function blood test shows an elevation in bilirubin and serum transaminases. Other indicators include raised indicators of ampulla of vater ...
This proposal follows the argument that an olfactorian and tunicate ancestor was motile, and that the sessile nature of ascidians is a derived character arising after appendicularians and vertebrates diverged from the modern ascidian lineage. Motile animal Sessile animal, with motile larva.
The bare area of the liver is found on the posterosuperior surface of the right lobe of the liver. [1] This lies close to the thoracic diaphragm. It is the only part of the liver that has no peritoneal covering. [1] [2] It lies between the two layers of the coronary ligament, as well as the right triangular ligament. [1]
A liver segment is one of eight segments of the liver as described in the widely used Couinaud classification (named after Claude Couinaud) in the anatomy of the liver.This system divides the lobes of the liver into eight segments based on a transverse plane through the bifurcation of the main portal vein, [1] arranged in a clockwise manner starting from the caudate lobe.
Sessility, or sessile, may refer to: Sessility (motility) , organisms which are not able to move about Sessility (botany) , flowers or leaves that grow directly from the stem or peduncle of a plant
A chordate (/ ˈ k ɔːr d eɪ t / KOR-dayt) is a deuterostomal bilaterian animal belonging to the phylum Chordata (/ k ɔːr ˈ d eɪ t ə / kor-DAY-tə).All chordates possess, at some point during their larval or adult stages, five distinctive physical characteristics (synapomorphies) that distinguish them from other taxa.