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Sinus Concordiae AS17-M-1645
Sinus may refer to: History * a sac in front of body worn into a toga, in the typical style of wearing it Anatomy * Sinus (anatomy), a sac or cavity in any organ or tissue ** Paranasal sinuses, air cavities in the cranial bones, especially those near the nose, including: *** Maxillary sinus, is the largest of the paranasal sinuses, under the eyes, in the maxillary bones *** Frontal sinus, superior to the eyes, in the frontal bone, which forms the hard part of the forehead *** Ethmoid sinus, formed from several discrete air cells within the ethmoid bone between the eyes and under the nose *** Sphenoidal sinus, in the sphenoid bone at the center of the skull base under the pituitary gland ** Anal sinuses, the furrows which separate the columns in the rectum ** Dural venous sinuses, venous channels found between layers of dura mater in the brain * Sinus (botany), a space or indentation, usually on a leaf Heart * Sinus node, a structure in the superior part of the right atrium * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toga
The toga (, ), a distinctive garment of Ancient Rome, was a roughly semicircular cloth, between in length, draped over the shoulders and around the body. It was usually woven from white wool, and was worn over a tunic. In Roman historical tradition, it is said to have been the favored dress of Romulus, Rome's founder; it was also thought to have originally been worn by both sexes, and by the citizen-military. As Roman women gradually adopted the stola, the toga was recognized as formal wear for male Roman citizens. Women found guilty of adultery and women engaged in prostitution might have provided the main exceptions to this rule.. The type of toga worn reflected a citizen's rank in the civil hierarchy. Various laws and customs restricted its use to citizens, who were required to wear it for public festivals and civic duties. From its probable beginnings as a simple, practical work-garment, the toga became more voluminous, complex, and costly, increasingly unsuited to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coronary Sinus
The coronary sinus () is the largest vein of the heart. It drains over half of the deoxygenated blood from the heart muscle into the right atrium. It begins on the backside of the heart, in between the left atrium, and left ventricle; it begins at the junction of the great cardiac vein, and oblique vein of the left atrium. It receives multiple tributaries. It passes across the backside of the heart along a groove between left atrium and left ventricle, then drains into the right atrium at the orifice of the coronary sinus (which is usually guarded by the valve of coronary sinus). Structure Origin The coronary sinus arises upon the posterior aspect of the heart between the left atrium, and left ventricle. The coronary sinus commences at the union of the great cardiac vein, and the oblique vein of the left atrium. The origin of the coronary sinus is marked by the Vieussens valve of the coronary sinus which is situated at the endpoint of the great cardiac vein. Cour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Successus
The Moon, lunar feature Sinus Successus (Latin ''sinus successūs'' "Bay of Success") lies along the eastern edge of Mare Fecunditatis. It is an outward bulge that forms a type of bay. The selenographic coordinates of Sinus Successus are 0.9° N, 59.0° E, and the diameter is 132 km. Along the eastern edge of the bay is the flooded crater Condon (crater), Condon, and the crater Webb (crater), Webb forms the southern end of the area. There are no other features of significance on the bay. However the terrain just to the northwest of Sinus Successus was the landing site for the Soviet Union, Soviet Luna 18 and Luna 20 probes. {{Lunar maria Maria on the Moon, Successus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Medii
Sinus Medii (Latin ''sinus mediī'' "Middle Bay") is a small lunar mare. It takes its name from its location at the intersection of the Moon's equator and prime meridian; as seen from the Earth, this feature is located in the central part of the Moon's near side, and it is the point closest to the Earth. From this spot, the Earth would always appear directly overhead, although the planet's position would vary slightly due to libration. During the Apollo program, Sinus Medii was designated Apollo Landing Site 3 (ALS3). Flight operations planners were concerned about having the optimum lighting conditions at the landing site. Hence, alternative landing sites moved progressively westward, following the terminator. A delay of two days for weather or equipment reasons would have sent Apollo 11 to Sinus Medii instead of ALS2, Mare Tranquillitatis (where it actually landed); another two-day delay would have resulted in ALS5, a site in Oceanus Procellarum, being targeted. Geology The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sine
In mathematics, sine and cosine are trigonometric functions of an angle. The sine and cosine of an acute angle are defined in the context of a right triangle: for the specified angle, its sine is the ratio of the length of the side opposite that angle to the length of the longest side of the triangle (the hypotenuse), and the cosine is the ratio of the length of the adjacent leg to that of the hypotenuse. For an angle \theta, the sine and cosine functions are denoted as \sin(\theta) and \cos(\theta). The definitions of sine and cosine have been extended to any real value in terms of the lengths of certain line segments in a unit circle. More modern definitions express the sine and cosine as infinite series, or as the solutions of certain differential equations, allowing their extension to arbitrary positive and negative values and even to complex numbers. The sine and cosine functions are commonly used to model periodic phenomena such as sound and light waves, the posit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Flanaticus
The Kvarner Gulf (, or ; ; or ) sometimes also Kvarner Bay, is a bay in the northern Adriatic Sea, located between the Istrian peninsula and the northern Croatian Littoral mainland. The bay is a part of Croatia's internal waters. The largest islands within the Kvarner are Cres, Krk, Pag, Rab and Lošinj. A portion of the Kvarner Bay, located between Cres, Krk, Rab and Pag is also called (literally "little Kvarner"; or ), and the portion east of Krk and Rab is called Senj Channel (after the mainland town of Senj). The bay is notable for its depth (more than 100 meters), which allows for the city of Rijeka at its northernmost point to have a sea port that can accommodate Capesize ships. Environment The bay is home to many beaches and tourist locations because of its beautiful waters and warm climate. Important Bird Area Collectively, the islands of the Kvarner Gulf form the Kvarner Islands Important Bird Area (IBA), designated as such by BirdLife International because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Magnus
The Magnus Sinus or Sinus Magnus (Latin; , ''o Mégas Kólpos''), also anglicized as the was the form of the Gulf of Thailand and South China Sea known to Greek, Roman, Arab, Persian, and Renaissance cartographers before the Age of Discovery. It was then briefly conflated with the Pacific Ocean before disappearing from maps. History The gulf and its major port of Cattigara had supposedly been reached by a 1st-century Greek trader named Alexander, who returned safely and left a periplus of his voyage. His account that Cattigara was "some days" sail from Zaba was taken by Marinus of Tyre to mean "numberless" days and by Ptolemy to mean "a few". Both Alexander and Marinus's works have been lost, but were claimed as authorities by Ptolemy in his ''Geography''. Ptolemy (and presumably Marinus before him) followed Hipparchus in making the Indian Ocean a landlocked sea, placing Cattigara on its unknown eastern shoreline. The expanse formed between it and the Malay Peninsula (th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus (Chalcidice)
Sinus or Sinos () was a town of the Chalcidice in ancient Macedonia. It belonged to the Delian League since it appears in the tribute records of Athens of 434/3 and 433/2 BCE, where it paid a '' phoros'' of 1500 drachmas Drachma may refer to: * Ancient drachma, an ancient Greek currency * Modern drachma, a modern Greek currency (1833...2002) * Cretan drachma, currency of the former Cretan State * Drachma proctocomys, moth species, the only species in the Genus '' ..., and in those of 421/0 BCE where it paid 800 drachmas. It also appears in a tributary decree of 422/1 BCE. Its territory was probably the Sinea found in an inscription dated to 305-297 BCE. Its site is in northwestern Chalcidice. References Populated places in ancient Macedonia Former populated places in Greece Geography of ancient Chalcidice Members of the Delian League {{ancientMacedonia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Venarum
The sinus venarum (also known as the sinus of the vena cava, or sinus venarum cavarum) is the portion of the right atrium in the adult human heart where the inner surface of the right atrium is smooth, whereas the rest of the inner surface is rough (trabeculated) due to the presence of pectinate muscles. The sinus venarum represents the portion of the adult heart that develops from the right sinus horn of the foetal sinus venosus. The sinus venarum is demarcated from the rest of the right atrium by the crista terminalis The crista terminalis (also known as the terminal crest, or crista terminalis of His) is a vertical ridge on the posterolateral inner surface of the adult right atrium extending between the superior vena cava, and the inferior vena cava. The cris ... (internally) and the sulcus terminalis (externally). References {{Portal bar, Anatomy Cardiac anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Venosus
The sinus venosus is a large quadrangular cavity which precedes the atrium on the venous side of the chordate heart. In mammals, the sinus venosus exists distinctly only in the embryonic heart where it is found between the two venae cavae; in the adult, the sinus venosus becomes incorporated into the wall of the right atrium to form a smooth part called the sinus venarum which is separated from the rest of the atrium by a ridge called the crista terminalis. In most mammals, the sinus venosus also forms the sinoatrial node and the coronary sinus. Development In the embryo, the thin walls of the sinus venosus are connected below with the right ventricle, and medially with the left atrium, but are free in the rest of their extent. It receives blood from the vitelline vein, umbilical vein and common cardinal vein The common cardinal veins, also known as the ducts of Cuvier, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus Rhythm
A sinus rhythm is any cardiac rhythm in which depolarisation of the cardiac muscle begins at the sinus node. It is necessary, but not sufficient, for normal electrical activity within the heart. On the electrocardiogram (ECG), a sinus rhythm is characterised by the presence of P waves that are normal in morphology. The term normal sinus rhythm (NSR) is sometimes used to denote a specific type of sinus rhythm where all other measurements on the ECG also fall within designated normal limits, giving rise to the characteristic appearance of the ECG when the electrical conduction system of the heart is functioning normally; however, other sinus rhythms can be entirely normal in particular patient groups and clinical contexts, so the term is sometimes considered a misnomer and its use is sometimes discouraged. Other types of sinus rhythm that can be normal include sinus tachycardia, sinus bradycardia, and sinus arrhythmia. Sinus rhythms may be present together with various othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinus (anatomy)
A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Most individuals have four paired cavities located in the cranial bone or skull. Etymology ''Sinus'' is Latin for "bay", "pocket", "curve", or "bosom". In anatomy, the term is used in various contexts. The word "sinusitis" is used to indicate that one or more of the membrane linings found in the sinus cavities has become inflamed or infected. It is however distinct from a fistula, which is a tract connecting two epithelial surfaces. If left untreated, infections occurring in the sinus cavities can affect the chest and lungs. Sinuses in the body * Paranasal sinuses ** Maxillary ** Ethmoid ** Sphenoid ** Frontal * Dural venous sinuses ** Anterior midline *** Cavernous *** Superior petrosal *** Inferior petrosal ** Central sul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
