Septum

Information about Septum

“Septa” redirects here. For the transit agency, see Southeastern Pennsylvania Transportation Authority.

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

Nasal septum: the cartilage wall separating the nostrils of the human nose.Often deviated or perforated through physical injury or cocaine abuse.
Cephalopod Septa: walls between each chamber, or siphuncle, in shells of nautiloids, ammonites, and belemnites; i.e. cephalopods that retain an external shell.
The wall dividing the right side of the heart from the left side.

Fungi produce septa to partition filamentous hyphae into discrete cells.

Histology

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.

Chemistry

Septa seal the two conical flasks. A cannula is used to transfer THF from the flask on the right to the flask on the left.

In chemistry and other experimental sciences, septa are rubber stoppers which seal flasks or bottles. They are designed to be pierced by a needle or cannula which allows fluids to be transferred. Septa are often used together with Schlenk flasks and Schlenk lines to handle oxygen- or moisture-sensitive materials.

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 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) in the brain is named for its approximate shape (partition). The septum is rich with nicotonic cholinergic receptors.

SEPTA

Reporting marks SPAX
Locale Greater Philadelphia:

Pennsylvania
Philadelphia
Bucks County

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Latin}}}
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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The nasal septum separates the left and right airways in the nose, dividing the two nostrils.

It is depressed by the Depressor septi nasi muscle.

Composition

The fleshy external end of the nasal septum is sometimes also called columella.
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Deviated septum
Classification & external resources

ICD-10 J 34.2
ICD-9 470

A deviated septum is a common physical disorder of the nose, involving a displacement of the nasal septum.
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A perforated septum is a medical condition whereby the septum, the cartilaginous membrane dividing the nostrils, develops a hole or fissure.

This may be brought on directly, as in the case of nasal piercings, or indirectly, as by long-term cocaine use or chronic epistaxis.
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Septa (singular septum) are thin walls or partitions between the internal chambers (camerae) of the shell of a cephalopod, namely nautiloids or ammonoids.

As the creature grows, its body moves forward in the shell to a new living chamber, secreting septa behind it.
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Cephalopoda
Cuvier, 1797

Orders

Subclass Nautiloidea

†Plectronocerida
†Ellesmerocerida
†Actinocerida
†Pseudorthocerida
†Endocerida
†Tarphycerida
†Oncocerida

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heart is a muscular organ responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in the annelids, mollusks, and arthropods.
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A hypha (plural hyphae) is a long, branching filamentous cell of a fungus, and also of unrelated Actinobacteria.^[1] In fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium.
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A cannula (from Latin "little reed"; plural cannulae) is a flexible tube which when inserted into the body is used either to withdraw fluid or insert medication.
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Schlenk flask, or Schlenk tube is a reaction vessel typically used in air sensitive chemistry, invented by Wilhelm Schlenk. They have a side arm fitted with a teflon or ground glass stopcock which allows the vessel to be evacuated or filled with gases (usually inert gases
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A Schlenk line (also vacuum gas manifold) refers to system consisting of a dual manifold with several ports ^[1]. One manifold is connected to a source of purified inert gas, while the other is connected to a high vacuum pump.
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The limbic system is the part of the human brain involved in emotion, motivation, and emotional association with memory.
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The septal nuclei are structures in the middle anteroventral cerebrum that are composed of medium-size neurons grouped into medial, lateral, and posterior groups. The septal nuclei receive reciprocal connections from the hippocampus, amygdala, hypothalamus, midbrain, habenula,
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