| Geogamasus fornix | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Subclass: | Acari |
| Order: | Mesostigmata |
| Family: | Ologamasidae |
| Genus: | Geogamasus |
| Species: | G. fornix |
| Binomial name | |
| Geogamasus fornix Halliday, 2001 | |
Geogamasus fornix is a species of mite in the family Ologamasidae. [1]
Doggy style is a sex position in which a person bends over, crouches on all fours, or lies on their abdomen, for sexual intercourse, other forms of sexual penetration or other sexual activity. Doggy style is a form of a rear-entry position, others being with the receiving partner lying on the side in the spoons sex position or the reverse cowgirl sex position. Non-penetrative sex in this position may also be regarded as doggy style.
The fornix is a C-shaped bundle of nerve fibers in the brain that acts as the major output tract of the hippocampus. The fornix also carries some afferent fibers to the hippocampus from structures in the diencephalon and basal forebrain. The fornix is part of the limbic system. While its exact function and importance in the physiology of the brain are still not entirely clear, it has been demonstrated in humans that surgical transection – the cutting of the fornix along its body – can cause memory loss. There is some debate over what type of memory is affected by this damage, but it has been found to most closely correlate with recall memory rather than recognition memory. This means that damage to the fornix can cause difficulty in recalling long-term information such as details of past events, but it has little effect on the ability to recognize objects or familiar situations.
The septum pellucidum is a thin, triangular, vertical double membrane separating the anterior horns of the left and right lateral ventricles of the brain. It runs as a sheet from the corpus callosum down to the fornix.
The lateral ventricles are the two largest ventricles of the brain and contain cerebrospinal fluid (CSF). Each cerebral hemisphere contains a lateral ventricle, known as the left or right ventricle, respectively.
In the brain, the interventricular foramina are channels that connect the paired lateral ventricles with the third ventricle at the midline of the brain. As channels, they allow cerebrospinal fluid (CSF) produced in the lateral ventricles to reach the third ventricle and then the rest of the brain's ventricular system. The walls of the interventricular foramina also contain choroid plexus, a specialized CSF-producing structure, that is continuous with that of the lateral and third ventricles above and below it.
The mental foramen is one of two foramina (openings) located on the anterior surface of the mandible. It transmits the terminal branches of the inferior alveolar nerve and vessels. The mental foramen descends slightly in toothless individuals.
Culdocentesis is a medical procedure involving the extraction of fluid from the pouch of Douglas through a needle. It can be one diagnostic technique used in identifying pelvic inflammatory disease and ruptured ectopic pregnancies that cause hemoperitoneum.
The fornices of the vagina are the superior portions of the vagina, extending into the recesses created by the vaginal portion of cervix. The word "fornix" is Latin for "arch".
Fornix can refer to:
The superior thalamostriate vein or terminal vein commences in the groove between the corpus striatum and thalamus, receives numerous veins from both of these parts, and unites behind the crus of the fornix with the superior choroid vein to form each of the internal cerebral veins.
Krause's glands are small, mucous accessory lacrimal glands that are found underneath the eyelid where the upper and lower conjunctivae meet. Their ducts unite into a rather long sinus which open into the fornix conjunctiva. There are approximately forty Krause glands in the region of the upper eyelid, and around 6 to 8 in the region of the lower lid. The function of these glands are to produce tears which are secreted onto the surface of the conjunctiva.
The trisynaptic circuit, or trisynaptic loop is a relay of synaptic transmission in the hippocampus. The circuit was initially described by the neuroanatomist Santiago Ramon y Cajal, in the early twentieth century, using the Golgi staining method. After the discovery of the trisynaptic circuit, a series of research has been conducted to determine the mechanisms driving this circuit. Today, research is focused on how this loop interacts with other parts of the brain, and how it influences human physiology and behaviour. For example, it has been shown that disruptions within the trisynaptic circuit leads to behavioural changes in rodent and feline models.
Geogamasus is a genus of mites in the family Ologamasidae.
Geogamasus brevisetosus is a species of mite in the family Ologamasidae.
Geogamasus brevitondentis is a species of mite in the family Ologamasidae.
Geogamasus cuneatus is a species of mite in the family Ologamasidae.
Geogamasus levispiritus is a species of mite in the family Ologamasidae.
Geogamasus pentaspinosus is a species of mite in the family Ologamasidae.
Geogamasus skoshi is a species of mite in the family Ologamasidae.
Krause's glands, Wolfring's glands and Popov's gland are the accessory lacrimal glands of the lacrimal system of human eye. These glands are structurally and histologically similar to the main lacrimal gland. Glands of Krause are located in the stroma of the conjunctival fornix, and the glands of Wolfring are located along the orbital border of the tarsal plate. These glands are oval and display numerous acini. The acini are surrounded, sometimes incompletely, by a row of myoepithelial cells. Animal studies suggest that the ducts of Wolfring glands have a tortuous course and open onto the palpebral conjunctiva. Like the main lacrimal gland, the accessory lacrimal glands are also densely innervated, but they lack parasympathetic innervation. These glands are exocrine glands, responsible for the basal (unstimulated) secretion of the middle aqueous layer of the tear film. 20 to 40 glands of Krause are found in the upper fornix, and 6-8 glands appear in the lower fornix. There are usually 2 to 5 Ciaccio's glands, and are found along the superior tarsal border of the upper eye lid. Popov’s glands are located within the substance of the caruncle.