The adjective 'vermiform' is used to describe which small bodily organ?
"selection pressure. Appendix (anatomy) The appendix (or vermiform appendix; also cecal [or caecal] appendix; vermix; or vermiform process) is a finger-like, blind-ended tube connected to the cecum, from which it develops in the embryo. The cecum is a pouchlike structure of the colon, located at the junction of the small and the large intestines. The term ""vermiform"" comes from Latin and means ""worm-shaped."" The appendix has been called a vestigial organ. The human appendix averages 9 cm in length but can range from 2 to 20 cm. The diameter of the appendix is usually between 7 and 8 mm. The"
"Vomeronasal organ The vomeronasal organ (VNO), or the Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals. It lies close to the vomer and nasal bones. It was discovered by Frederik Ruysch prior to 1732 and later by Ludwig Jacobson in 1813. This organ is the sense organ involved in the flehmen response in mammals. The VNO is the first stage of the accessory olfactory system and contains sensory neurons that detect chemical stimuli. The axons from these neurons project to the accessory olfactory bulb, which targets the amygdala and bed nucleus of the stria"
"atrophied part of the Wolffian body. Paradidymis The term paradidymis (organ of Giraldés) is applied to a small collection of convoluted tubules, situated in front of the lower part of the spermatic cord, above the head of the epididymis. These tubes are lined with columnar ciliated epithelium, and probably represent the remains of a part of the Wolffian body, like the epididymis, but are functionless and vestigial. The Wolffian body operates as a kidney (mesonephros) in fishes and amphibians, but the corresponding tissue is co-opted to form parts of the male reproductive system in other classes of vertebrate. The paradidymis"
"Paradidymis The term paradidymis (organ of Giraldés) is applied to a small collection of convoluted tubules, situated in front of the lower part of the spermatic cord, above the head of the epididymis. These tubes are lined with columnar ciliated epithelium, and probably represent the remains of a part of the Wolffian body, like the epididymis, but are functionless and vestigial. The Wolffian body operates as a kidney (mesonephros) in fishes and amphibians, but the corresponding tissue is co-opted to form parts of the male reproductive system in other classes of vertebrate. The paradidymis represents a remnant of an unused,"
"are attached to the neurosensory epithelium of the vomeronasal organ. More importantly, a new research has demonstrated that the vomeronasal organ is necessary in order for garter snake to respond to airborne prey odors, but fail to respond to airborne nonprey odors. Vomeronasal organ The vomeronasal organ (VNO), or the Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals. It lies close to the vomer and nasal bones. It was discovered by Frederik Ruysch prior to 1732 and later by Ludwig Jacobson in 1813. This organ is the sense organ involved in the flehmen response"
"diameter. ""N. salmincola"" has a prominent cirrus pouch, or hollow organ surrounding the male copulatory organ, but no seminal vesicle. True to its character as a trematode, it has an oral sucker 0.15 to 0.18 mm in diameter, and a ventral sucker 0.12 to 0.13 mm in diameter. The oral and ventral suckers are used to grasp and crawl actively about the intestinal tissue of its host, though the worm leaves no extensive mechanical damage. The adult lays eggs within the vertebrate host. The vertebrate passes out the eggs in its feces. The first larval stage, the miracidia, develop within"
"fluid, about the size of a small pea. The pedicles frequently attain a considerable length. Vesicular appendages of epoophoron Vesicular appendages of the epoöophoron are small pedunculated vesicles of the fimbriae of the uterine tube, or connected to the broad ligament. They were described by Giovanni Battista Morgagni and are remnants of the cranial part of the mesonephric duct. Typically they are asymptomatic. In the male remnants of the paramesonephric duct may be present as well and are also known as ""appendix of testis"" or ""hydatid of Morgagni"". They are rarely absent, and are attached either to the free margin"
"Plasmodium diminutivum Plasmodium diminutivum is a parasite of the genus ""Plasmodium"" subgenus ""Carinamoeba"". Like all ""Plasmodium"" species ""P. diminutivum"" has both vertebrate and insect hosts. The vertebrate hosts for this parasite are reptiles. This species was described by Telford in 1973. The parasites have no apparent effect on the host erythrocyte and tend to lie in a polar or lateral position within the host cell. This species appears to infect only mature cells. The schizonts are initially round to oval but as they mature become fan shaped with a pigment mass forming the handle of the fan. Mature schizonts measure"
"Mesonephros The mesonephros () is one of three excretory organs that develop in vertebrates. It serves as the main excretory organ of aquatic vertebrates and as a temporary kidney in reptiles, birds, and mammals. The mesonephros is included in the Wolffian body after Caspar Friedrich Wolff who described it in 1759. (The Wolffian body is composed of: mesonephros + paramesonephrotic blastema) The mesonephros acts as a structure similar to the kidney that, in humans, functions between the sixth and tenth weeks of embryological life. Despite the similarity in structure, function, and terminology, however, the mesonephric nephrons do not form any"
"homunculus has a portion for the tongue most lateral while the sensory homunculus has an area for genitalia most medial and an area for visceral organs most lateral. Well known in the field of neurology, this is also commonly called ""the little man inside the brain."" This scientific model is known as the cortical homunculus. In medical science, the term homunculus is sometimes applied to certain fetus-like ovarian cystic teratomae. These will sometimes contain hair, sebaceous material and in some cases cartilagous or bony structures. Homunculi can be found in centuries worth of literature. These fictions are primarily centred around"
"functions and metabolic processes. This neural pathway differs from that used by the main olfactory system. All lemuriforms have a VNO, as do tarsiers and some New World monkeys. Adapiforms exhibit the gap between the upper incisors, which indicates the presence of a VNO, but there is some disagreement over whether or not they possessed a rhinarium. Extant strepsirrhines have an epitheliochorial placenta, where the maternal blood does not come in direct contact with the fetal chorion like it does in the hemochorial placenta of haplorhines. The strepsirrhine uterus has two distinct chambers (bicornuate). Despite having similar gestation periods to"
"articulates with six bones: It also articulates with the septal cartilage of the nose. The vomeronasal organ, also called Jacobson's organ, is a chemoreceptor organ named for its closeness to the vomer and nasal bones, and is particularly developed in animals such as cats (who adopt a characteristic pose called the ""Flehmen reaction"" or ""flehming"" when making use of it), and is thought to have to do with the perception of certain pheromones. In bony fish, the vomers are flattened, paired, bones forming the anterior part of the roof of the mouth, just behind the premaxillary bones. In many species,"
"In an analogous connection of no relevance to vertebrate morphology, the term rhinarium sometimes is applied to chemosensory structures in invertebrates. For example, microscopic sensilla in the form of flattened sense organs on the antennae of aphids are referred to as rhinaria. Morphologically the rhinarium certainly is part of the olfactory system, but it still is open to debate which part of the system it derived from. On the one hand it might be part of the main olfactory system, which captures media-borne odors; on the other, it might be part of the ""second nose"", the Accessory Olfactory System, which"
"with sensory function, called a caruncle. Another sensory organ, called the nuchal organ (or a variation, the nuchal epaulette), is a ciliated pit or groove at the posterior end of the prostomium. Prostomium The prostomium (sometimes also called the acron) is the first body segment in an annelid worm's body in the anterior end. It is in front of (but does not include) the mouth, being usually a small shelf- or lip-like extension over the dorsal side of the mouth. It sometimes bears antennae and eyes. It often functions like a kind of overlip when the animal is feeding. The"
"with a model that postulates that osmoreceptors and angiotensin receptors in the SFO send excitatory neural information to the median preoptic nucleus for the mobilization of thirst. Subfornical organ The subfornical organ (SFO) is one of the circumventricular organs of the brain. Its name comes from its location on the ventral surface of the fornix near the interventricular foramina (foramina of Monro), which interconnect the lateral ventricles and the third ventricle. Like all circumventricular organs, the subfornical organ is well-vascularized, and like all circumventricular organs except the subcommissural organ, some SFO capillaries have fenestrae, which increase capillary permeability. The SFO"
"tympanal organ and hearing system. Segments two to eight are ring-shaped and joined by flexible membranes. Segments nine to eleven are reduced in size; segment nine bears a pair of cerci and segments ten and eleven house the reproductive organs. Female grasshoppers are normally larger than males, with short ovipositors. The name of the suborder ""Caelifera"" comes from the Latin and means ""chisel-bearing"", referring to the shape of the ovipositor. Those species that make easily heard noises usually do so by rubbing a row of pegs on the hind legs against the edges of the forewings (stridulation). These sounds are"
"vermiformis"" can swim with lateral flexions of the body when disturbed. This article incorporates Creative Commons (CC-BY-4.0) text from the reference Lomanotus vermiformis Lomanotus vermiformis is a species of sea slug, a marine gastropod mollusk in the family Lomanotidae. This species was synonymised with the Caribbean species ""Lomanotus stauberi"" in 1988. The specific name ""vermiformis"" is from Latin language and it means ""in the shape of a worm"" referring to elongate body of this species. The distribution of ""Lomanotus vermiformis"" is circumtropical. This species was described from the Red Sea. It has also been reported widely from tropical seas in"
"Subfornical organ The subfornical organ (SFO) is one of the circumventricular organs of the brain. Its name comes from its location on the ventral surface of the fornix near the interventricular foramina (foramina of Monro), which interconnect the lateral ventricles and the third ventricle. Like all circumventricular organs, the subfornical organ is well-vascularized, and like all circumventricular organs except the subcommissural organ, some SFO capillaries have fenestrae, which increase capillary permeability. The SFO is considered a sensory circumventricular organ because it is responsive to a wide variety of hormones and neurotransmitters, as opposed to secretory circumventricular organs, which are specialized"
"that suggested lymphatic tissues, such as the tonsils and appendix, may have substantial immunological functions. In modern humans, the vermiform appendix is a vestige of a redundant organ that in ancestral species had digestive functions, much as it still does in extant species in which intestinal flora hydrolyze cellulose and similar indigestible plant materials. Some herbivorous animals, such as rabbits, have a terminal vermiform appendix and cecum that apparently bear patches of tissue with immune functions and may also be important in maintaining the composition of intestinal flora. It does not however seem to have much digestive function, if any,"
"Weberian apparatus The Weberian apparatus is an anatomical structure that connects the swim bladder to the auditory system in fishes belonging to the superorder Ostariophysi. When it is fully developed in adult fish, the elements of the apparatus are sometimes collectively referred to as the Weberian ossicles. The presence of the structure is one of the most important and phylogenetically significant distinguishing characteristics of the Ostariophysi. The structure itself consists of a set of minute bones that originate from the first few vertebrae to develop in an embryonic ostariophysan. These bones grow to physically connect the auditory system, specifically the"
"Weberian apparatus The Weberian apparatus is an anatomical structure that connects the swim bladder to the auditory system in fishes belonging to the superorder Ostariophysi. When it is fully developed in adult fish, the elements of the apparatus are sometimes collectively referred to as the Weberian ossicles. The presence of the structure is one of the most important and phylogenetically significant distinguishing characteristics of the Ostariophysi. The structure itself consists of a set of minute bones that originate from the first few vertebrae to develop in an embryonic ostariophysan. These bones grow to physically connect the auditory system, specifically the"
"of the major organs. The first segment contains the sexual organs as well as a pair of vestigial and modified appendages forming a structure called the genital operculum. The second segment bears a pair of featherlike sensory organs known as the pectines; the final four segments each contain a pair of book lungs. The mesosoma is armoured with chitinous plates, on the upper surface by the tergites and on the lower surface by the sternites. In other arachnids such as spiders, the mesosoma is fused with the metasoma to form the opisthosoma. Mesosoma The mesosoma is the middle part of"
"Juxtaoral organ of Chievitz The juxtaoral organ in humans is a small longish structure (10–14 mm in length, 1–2 mm in diameter), situated medially to the medial pterygoid muscle. The organ consists of a central ramified cord of an epithelial parenchyma, embedded in connective tissue particularly rich in nerve fibers and sensory receptors. Close relations exist between epthelial cells and nerve endings. Histochemically, the parenchyma displays a characteristic pattern of various enzymes. Sporadically, epithelial follicles containing colloidal material can be found. The organ is surrounded by a dense, perineurium-like connective tissue. Originally, the formation was known to embryologists only (""Chievitz"
"Vesicular appendages of epoophoron Vesicular appendages of the epoöophoron are small pedunculated vesicles of the fimbriae of the uterine tube, or connected to the broad ligament. They were described by Giovanni Battista Morgagni and are remnants of the cranial part of the mesonephric duct. Typically they are asymptomatic. In the male remnants of the paramesonephric duct may be present as well and are also known as ""appendix of testis"" or ""hydatid of Morgagni"". They are rarely absent, and are attached either to the free margin of the mesosalpinx or to one of the fimbriae, and are pedunculated vesicles, filled with"
"as the world’s smallest terrestrial pteridophyte with plants typically 1–1.2 cm in size. In all modern classifications, from the Smith system of 2006 forward, Ophioglossaceae is the single family in order Ophioglossales. The Smith system of 2006 divides the family into four genera: ""Botrychium"" s.l. (including ""Sceptridium"", ""Botrypus"", and ""Japanobotrychium""), ""Helminthostachys"", ""Mankyua"", and ""Ophioglossum"" s.l. (including ""Cheiroglossa"" and ""Ophioderma""). Christenhusz et al., in 2011, recognized ""Cheiroglossa"" as a segregate of ""Ophioglossum"". The Christenhusz and Chase system of 2014 included ""Cheiroglossa"" in ""Ophioglossum"" again. The PPG I system divides the family into four subfamilies: Ophioglossaceae Ophioglossaceae, the adder's-tongue family, is a"
"fusiform, well developed, and not larger than epididymes the dorsocefalic faces of which they circle. Vas deferens is thin ducts running from epididymis posteriorly. Testisacs is ovoid, approximately 1.5 times the size of ovisacs and located posterior to ganglion in segment XIII. Female reproductive system: Vagina has an upright, long, evenly curved tube entering directly into ventral body wall posterior to ganglion in XII. Common oviduct enters the vagina subterminally at a small vaginal caecum. Ovisacs are globular, small. Common oviduct has a thin duct forming several loops and covered with a thick layer of glandular tissue bound to the"
"a smaller-than-average penis that is open along the underside. The appearance may be quite ambiguous, describable as female genitals with a very large clitoris and partially fused labia, or as male genitals with a very small penis, completely open along the midline (""hypospadic""), and empty scrotum. Fertility is variable. The orchidometer is a medical instrument to measure the volume of the testicles. It was developed by Swiss pediatric endocrinologist Andrea Prader. The Prader scale and Quigley scale are visual rating systems that measure genital appearance. These measurement systems were satirized in the Phall-O-Meter, created by the (now defunct) Intersex Society"
"sensing the movement of the haemolymph between the cuticle and two tracheae. The functionality is similar to the vestibular system of vertebrates. The bee organ is cone shaped branching out from its nerve and almost obstructs haemolymph flow through the limb. In the carpenter ant ""Camponotus ligniperda"" has the form of a deformed sphere. On one end attachment cells connect it to the cuticle; on the other it is innervated by the tibial nerve. The organ has the shape of a cavity surrounded with a monocellular membrane that is heavily folded on the inside. Sensilla extend into the cavity, each"
"Osmeterium The osmeterium is a defensive organ found in all papilionid larvae, in all stages. The organ is situated in the prothoracic segment and can be everted when the larva feels threatened. The everted organ resembles a fleshy forked tongue not unlike a snake tongue and this along with the large eye like spots on the body might be used to startle birds and small reptiles. The osmeterial organ remains inside the body in the thoracic region in an inverted position and is everted when the larva is disturbed in any way emitting a foul, disagreeable odor which serves to"
"separated from each other by septa (the plural of ""septum"") which are perforated transverse walls, allowing the coelomic fluid to pass between segments. A pair of structures called nephrostomes are located at the back of each septum; a nephric tubule leads from each nephrostome through the septum and into the following segment. This tubule then leads to the main body fluid filtering organ, the nephridium or metanephridium, which removes metabolic waste from the coelomic fluid and expels it through pores called nephridiopores on the worm's sides; usually two nephridia (sometimes more) are found in most segments. At the center of"
"Gastrovascular cavity The gastrovascular cavity is the primary organ of digestion and circulation in two major animal phyla: the Cnidaria (including jellyfish and corals) and Platyhelminthes (flatworms). The cavity may be extensively branched into a system of canals. In cnidarians, the gastrovascular system is also known as the coelenteron, and is commonly known as a ""blind gut"" or ""blind sac"", since food enters and waste exits through the same orifice. The radially symmetrical cnidarians have a sac-like body in two distinct layers, the epidermis and gastrodermis, with a jellylike layer called the mesoglea between. Extracellular digestion takes place within the"
"Epoophoron The epoophoron or epoöphoron (also called organ of Rosenmüller or the parovarium) is a remnant of the mesonephric tubules that can be found next to the ovary and fallopian tube. It may contain 10–15 transverse small ducts or tubules that lead to the Gartner’s duct (also longitudinal duct of epoophoron) that represents the caudal remnant of the mesonephric duct and passes through the broad ligament and the lateral wall of the cervix and vagina. The epoophoron is a homologue to the epididymis in the male. While the epoophoron is located in the lateral portion of the mesosalpinx and mesovarium,"
"At a schematic level, that basic worm-shape continues to be reflected in the body and nervous system architecture of all modern bilaterians, including vertebrates. The fundamental bilateral body form is a tube with a hollow gut cavity running from the mouth to the anus, and a nerve cord with an enlargement (a ganglion) for each body segment, with an especially large ganglion at the front, called the brain. The brain is small and simple in some species, such as nematode worms; in other species, including vertebrates, it is the most complex organ in the body. Some types of worms, such"