Cysts.
Some fluid-filled structures found in cells include vacuoles, which store nutrients and waste, and vesicles, which transport materials within the cell. Additionally, cells may contain fluid-filled organelles such as the endoplasmic reticulum and the Golgi apparatus, which are involved in protein synthesis and processing.
Semicircular canals: are the fluid filled structures in the ear, which are involved in balance.
The structures you are referring to are the cochlea in the inner ear. These coiled tunnels are filled with fluid that vibrates in response to sound waves, which in turn trigger the sensory cells responsible for hearing.
Cavities that are filled with blood and help drain cerebrospinal fluid in the brain are called the arachnoid granulations. These structures play a key role in maintaining the balance of cerebrospinal fluid in the central nervous system.
An air or fluid filled space is called a cavity. It can be found within the body, such as the nasal cavity or the pleural cavity within the chest. It can also refer to spaces in rocks, soil, or structures.
A bursae is a sack like structure that is filled with viscid fluid. The main purpose of the bursae sack is to protect tendons.
A lacune is a cerebrospinal fluid filled cavity. This cavity is found in the basal ganglia or white matter in humans.
No, the brain does not have empty spaces. It is mainly composed of brain tissue, which includes neurons, glial cells, and structures such as ventricles that are filled with cerebrospinal fluid. Any empty spaces within the brain are typically filled with either fluid or tissue.
Having joints covered by a fluid-filled sac, called a synovial bursa, helps reduce friction between moving parts of the joint, provides cushioning and shock absorption, and aids in smoother joint movement. This fluid-filled sac also helps to distribute nutrients to the joint structures and remove waste products.
A closed sac with fluid in it
A blastocoele is the fluid-filled cavity in the blastula.
The ventricles are the fluid-filled cavities of the brain.