dens
The central opening of a vessel is called the lumen. It is the hollow space within the vessel that allows for the passage of fluids, such as blood in blood vessels or sap in plant vessels.
lumen - the central opening within a tube or hollow organ.
its called Shinkai no Kodoku
Vertebral foramen
blastopore
A bowl-shaped area that forms around a volcano's central vent is called a crater.
blastopore
A volcano erupts when molten rock, known as magma, flows through a central opening in the Earth's crust called a vent. This release of magma, gases, and ash can result in a volcanic eruption.
The opening for spinal cord and brain attachment is called the foramen magnum. This large opening is located at the base of the skull and connects the brainstem to the spinal cord, allowing for the passage of neural signals between the two. It plays a crucial role in the central nervous system's overall function.
The opening of a volcano is called the vent.The opening of a volcano is called a vent.
It is called the hatchway. If it is a round opening, it is called a scuttle. If it is a square opening it is called a hatch. Depending on the vessel and the location they can be "dogged" open.
The opening is called a stomata, which is regulated by two guard cells.