Septum

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Septum

A septum (Latin for something that encloses; plural Septa) is a partition separating two cavities or spaces. Examples include:

Histological septa are seen throughout most tissues of the body, particularly where they are needed to stiffen a soft cellular tissue, and they also provide planes of ingress for small blood vessels. Because the dense collagen fibres of a septum usually extend out into the softer adjacent tissues, microscopic fibrous septa are less clearly defined than the macroscopic types of septa listed above.

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Encyclopedia

A septum (Latin for something that encloses; plural Septa) is a partition separating two cavities or spaces. Examples include:

Nasal septum
Nasal septum

The nasal septum separates the left and right airways in the nose, dividing the two nostrils.It is Depression by the Depressor septi nasi muscle....
: the cartilage wall separating the nostrils of the human
Human

A human being, also human or man, is a member of a species of bipedalism primates in the family Hominidae . Mitochondrial DNA evidence indicates that modern humans originated in east Africa about 200,000 years ago....
nose.
Cephalopod Septa: walls between each chamber, or siphuncle, in shells of nautiloids, ammonite
Ammonite

Ammonites are an Extinction group of marine animals of the Subclass Ammonoidea in the class Cephalopoda, phylum Mollusca. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific Geologic time scale....
s, and belemnites; i.e. cephalopod
Cephalopod

The cephalopods are the mollusc class Cephalopoda characterized by bilateral symmetry, a prominent head, and a modification of the mollusk foot, a muscular hydrostat, into the form of cephalopod arms or tentacles....
s that retain an external shell.
The wall dividing the right side of the heart
Heart

The heart is a muscle organ in all vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods....
from the left side.
A partition dividing filamentous hypha
Hypha

A hypha is a long, branching filamentous cell of a fungus, and also of unrelated Actinobacteria. In fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium....
e into discrete cells in fungi

Histological septa are seen throughout most tissues of the body, particularly where they are needed to stiffen a soft cellular tissue, and they also provide planes of ingress for small blood vessels. Because the dense collagen fibres of a septum usually extend out into the softer adjacent tissues, microscopic fibrous septa are less clearly defined than the macroscopic types of septa listed above. In rare instances, a septum is a cross-wall.

The septum is also found within the chambers of the heart. It provides strength to the walls of the heart and separates the left and right sides of the heart.

Particle accelerators

Septum magneta and electrostatic septum are two types of septa that can deflect an ejected beam while not affecting the orbiting beam. These devices are used with a circular particle beam accelerator to inject or eject a beam of particles to or from an accelerator.

Brain physiology

Part of the limbic system

Limbic system

The limbic system is a set of brain structures including the hippocampus, amygdala, anterior thalamic nuclei, and limbic cortex, which support a variety of functions including emotion, behavior, long term memory, and olfactory....
that regulates emotions and the ability to learn and control impulses as well as such drives as sex, hunger, thirst, aggression, and fear. The septum (or septal nuclei

Septal nuclei

The septal nuclei are structures in the middle anteroventral Telencephalon that are composed of medium-size neurons grouped into medial, lateral, and posterior groups....
) in the brain is named for its approximate shape (partition). The septum is rich with nicotinic cholinergic receptors.