These are the remnants of the arms and legs that the ancestors of snakes had. Over time the limbs evolved to be smaller and smaller, until now the limbs are not visible externally but can be see as vestigial bones on a radiograph.
The nonfunctional vestigial pelvic girdle and limb bones in boa constrictors are referred to as pelvic spurs or pelvic vestiges. These remnants are thought to be remnants of their evolutionary history when their ancestors had functional legs.
front-end structures (FES) relating to bus bodies
Chromosomes
Centriole
Furniture in 1920 had very simple structures. They had heavy bodies and they were bigger in size.
Golgi bodies
X-rays can detect problems in bodies and also in many structures.
Presence of dense bodies, which are structures that anchor actin filaments and help transmit force throughout the cell.
A cryovolcano is an icy volcano. These goelogical structures are known to have formed on frozen/icy celestial bodies.
I believe the Z-lines anchor the Thin filaments
Fruiting bodies in fungi are the reproductive structures that produce and disperse spores, enabling the fungi to reproduce sexually or asexually. These structures can take various forms, such as mushrooms, puffballs, or truffles, depending on the species. Fruiting bodies typically emerge from the mycelium, the vegetative part of the fungus, and are crucial for the life cycle of fungi, allowing them to spread to new environments.
The bristle-like structures on some annelid bodies are called "setae." These structures are typically made of chitin and assist in locomotion by providing traction against the substrate. Setae can vary in number and arrangement depending on the species, playing a crucial role in the movement and burrowing behavior of these segmented worms.