calcium carbonate. It is called theca. The flattened bottom of the cup beneath the polyp is called the basal plate. The cavity of the cup develops several vertical septa or sclera septa, proceeding from theca towards the center of the cup. Like...

arteries also arise one on either side and supply blood to the diaphragm. Then the dorsal aorta passes into the abdominal cavity through the diaphragm. In the abdominal cavity, the aorta gives a coeliac artery supplying blood to the liver, spleen,...

The kidneys in frogs are mesonephric. The kidneys are dark red, bean-shaped situated in the middle of the abdominal cavity. Kidneys are flat, dark red structures present towards the posterior end of the body cavity. The right kidney is slightly more...

water almost instantly. This response helps prepare the mouth and digestive system for incoming food by moistening the oral cavity and initiating enzyme release. Taste and Visual Food Cues Seeing appetizing food or tasting flavorful...

mirroring that of other Galactic bubbles: massive stars born in a common cluster explode as supernovae, carving out a cavity in the surrounding medium. The expanding shock front compresses adjacent gas, potentially triggering a secondary wave of star...

for Astronomy, the presence of these planets has created distinct structural changes in the disk, including clear gaps and cavity formations. ALMA and SPHERE Views of the WISPIT 2 Protoplanetary Disk ©The Astrophysical Journal Letters The observations...

since become essential to fields ranging from precision medicine to fundamental physics. Quantum heat engine. An optical cavity is confined between two mirrors, of which one is a piston. The piston generates useful work on expansion, which is driven by...

The fertilisation is internal. Zygote undergoes holoblastic cleavage and develops into coeloblastula. It shows a hollow cavity covered by a single layer of cells. Many amoeboid cells enter the central cavity and it becomes parenchymuia larva (or)...

argues that the brain of Trawdenia planti occupied nearly the entire cranial cavity, a pattern that diverges from many fossil vertebrates where the brain fills only a fraction of the skull. If early ray‑finned fishes shared this tight brain‑skull...

a nuclear device detonates within it. The second, termed a “pre‑excavation detonation,” employs a penetrator to bore a deep cavity before the bomb goes off, allowing the explosion to occur well inside the rock. Simulations indicate that the deep‑bore...

Snake Fossil Offers Unmatched Brain Detail High‑resolution micro‑CT scans allowed researchers to model the animal’s brain cavity, cranial nerves and inner ear, producing what they describe as the most complete brain reconstruction for a stem snake to...

After confirming a single time boundary, the team added a second, creating an arrangement analogous to a Fabry‑Pérot cavity—but with “mirrors” defined by moments instead of locations. By varying the interval between the two switching events, they...

a young, bright star at the core and the surrounding molecular cloud. This central star acts as an engine, carving out a cavity in the gas and illuminating the surrounding material through both emission and reflection. The contrast between this radiant...

University of California, Riverside chemist Jingsong Zhang and first author Lei Yang utilized an advanced method known as cavity ring-down spectroscopy. This technique employs high-precision mirrors to bounce light roughly 10,000 times, creating an...

sporozoites are formed within the oocyst. After complete maturation, oocyst ruptures to release sporozoites into the body cavity of the mosquito. Most of the sporozoites migrate to the salivary glands. Infection is transmitted to the humans by the bite...

the cerebellum. The medulla oblongata is narrow, almost completely covered by the backward extension of the cerebellum. The cavity of the medulla is large and forms the fourth ventricle. Same as in Calotes. Same as in Calotes. The posterior choroid...

ampulla. The ampullae of the anterior and the external canals lie close together towards the anterior end of the ear. The cavity in the membranous labyrinth is filled with a fluid Endo lymph. Six sensory patches are present in the wall of the internal...

and sponogocoel is also called internal ostium. Spongocoel The central part of the cylinder of sycon will show a hollow cavity called spongocoel. it is lined with epithelial cells. At the apex it opens out through osculum. Because of the action of...

and Spicules. On the body of sponges a number of dermal ostia are present. In sponges the centre of the body paragastric cavity is present. The skeletal system of sponges include spicules. They are made by CaCO3 or silicon or spongin. In the body of...

ClassDemospongiae Class I: Calcarea Skeleton is made by calcareaous spicules. They show single spongocoel cavity which opens to the outside through a single opening called osculum. Radially symmetrical animals. Choanocyte cells are large. This is...