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* Interventricular septum, the wall separating the left and right ventricles of the heart
* Lingual septum, a vertical layer of fibrous tissue that separates the halves of the tongue.
* Nasal septum: the cartilage wall separating the nostrils of the nose
* Alveolar septum: the thin wall which separates the alveoli from each other in the lungs
* Orbital septum, a palpebral ligament in the upper and lower eyelids
* Septum pellucidum or septum lucidum, a thin structure separating two fluid pockets in the brain
* Uterine septum, a malformation of the uterus
* Vaginal septum, a lateral or transverse partition inside the vagina
* Intermuscular septa separating the muscles of the arms and legs
Histological septa are seen throughout most tissues of the body, particularly where they are needed to stiffen 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. Thus it divides a structure into smaller parts.
*A partition dividing filamentous
*A partition that separates the
biology
Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditar ...
, a septum (Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power ...
for ''something that encloses''; plural septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate.
Examples
Human anatomy
* Interatrial septum, the wall of tissue that is a sectional part of the left and right atria of the heart
* Interventricular septum, the wall separating the left and right ventricles of the heart
* Lingual septum, a vertical layer of fibrous tissue that separates the halves of the tongue.
* Nasal septum: the cartilage wall separating the nostrils of the nose
* Alveolar septum: the thin wall which separates the alveoli from each other in the lungs
* Orbital septum, a palpebral ligament in the upper and lower eyelids
* Septum pellucidum or septum lucidum, a thin structure separating two fluid pockets in the brain
* Uterine septum, a malformation of the uterus
* Vaginal septum, a lateral or transverse partition inside the vagina
* Intermuscular septa separating the muscles of the arms and legs
Histological septa are seen throughout most tissues of the body, particularly where they are needed to stiffen 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. Thus it divides a structure into smaller parts.
Cell biology
The septum (cell biology) is the boundary formed between dividing cells in the course ofcell division
Cell division is the process by which a parent cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome(s) before dividing. In eukaryotes, there ar ...
.
Fungus
*A partition dividing filamentous hypha
A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium.
Structure
A hypha consists of one o ...
e into discrete cells in fungi.
Botany
*A partition that separates the locule
A locule (plural locules) or loculus (plural loculi) (meaning "little place" in Latin) is a small cavity or compartment within an organ or part of an organism (animal, plant, or fungus).
In angiosperms (flowering plants), the term ''locule'' usu ...
s of a fruit, anther, or sporangium.
Zoology
A coral septum is one of the radial calcareous plates in the corallites of acoral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secre ...
.
Annelid
The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecol ...
s have septa that divide their coelom into segmented chambers.
Many shelled organisms have septa subdividing their shell chamber, including rhizopod
An amoeba (; less commonly spelled ameba or amœba; plural ''am(o)ebas'' or ''am(o)ebae'' ), often called an amoeboid, is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting pseud ...
s, cephalopods and gastropods, the latter seemingly serving as a defence against shell-boring predators.{{Cite journal , doi=10.1086/284025 , title=Unsuccessful Predation and Evolution, journal=The American Naturalist, volume=120, issue=6, pages=701–720, year=1982, last1=Vermeij, first1=Geerat J., s2cid=84610680
Laboratory technology
* Arubber septum
Cannula transfer or cannulation is a set of air-free techniques used with a Schlenk line, in transferring liquid or solution samples between reaction vessels via cannulae, avoiding atmospheric contamination. While the syringes are not the same as ...
is an engineered membrane that permits transfer of a substance (usually liquid or gas) without contact with air, usually using a syringe with needle.
References