the auditory canal is formed out of which bone of the skull
tympani bone
Middle ear The middle ear is the portion of the ear internal to the eardrum, and external to the oval window of the inner ear. The mammalian middle ear contains three ossicles, which transfer the vibrations of the eardrum into waves in the fluid and membranes of the inner ear. The hollow space of the middle ear is also known as the tympanic cavity and is surrounded by the tympani bone. The auditory tube (also known as the Eustachian tube or the pharyngotympanic tube) joins the tympanic cavity with the nasal cavity (nasopharynx), allowing pressure to equalize between the middle
Middle ear
in his autobiography how the IWW issued stickers, which the IWW called silent agitators, to propagandize against the war. The stickers declared, "Don't be a soldier, be a man. Join the I.W.W. and fight on the job for yourself and your class." The IWW's opposition to the war led to enmity and, reportedly, behind the scenes attacks from the AFL's Samuel Gompers. In 1919, the year after the end of the war, the AFL seemed to have second thoughts, concluding that works committees of the war years were "a snare and a cooptation plan." Unfortunately by this time, many IWW
Industrial Workers of the World philosophy and tactics
money for a memorial tablet for his grave. Cockrell was murdered in 1951 when he was shot by a jealous husband in a case of mistaken identity as he walked out of a Philadelphia, Pennsylvania bar. He is buried at Mount Lawn Cemetery, Sharon Hill, Delaware County, Pennsylvania, USA. One year after his death, Cockrell received votes listing him on the 1952 "Pittsburgh Courier" player-voted poll of the Negro Leagues' best players ever. Phil Cockrell Phillip "Fish" Cockrell, born Phillip Williams, (July 9, 1895 in Augusta, Georgia – March 31, 1951 in Philadelphia, Pennsylvania) was a baseball player in the
Phil Cockrell
twenty-five countries. She has taken courses at public libraries and romance writing conventions and has appeared in the print media and on "A Current Affair". She also designs romance author websites including those for award winners Liz Fielding, Lucy Gordon and Trish Wylie as well as her own Ally Blake Ally Blake is an Australian writer of romance novels. Blake was born in a small town in Outback Queensland, Australia. She graduated from St Peters Lutheran College in Brisbane. She earned her bachelor's degree from the University of Queensland, with a double English major. Blake was a cheerleader for both
Ally Blake
of three Bach cantatas written in Leipzig in the summer and fall of 1726, in which an alto soloist is the only singer, the others being , and . It seems likely that Bach had a capable alto singer at his disposal during this period. The cantata is structured in five movements and scored for a small orchestra of oboe d'amore, two violins, viola, organ solo and basso continuo. The work is in five movements, three arias separated by two recitatives: A typical performance of the cantata will last around twenty minutes. The first aria is a da capo aria
Vergnügte Ruh, beliebte Seelenlust, BWV 170
was promoted by an initial installment in the "New York Times", but a second installment was scrubbed. The authors also conducted many media interviews. Attempting to capitalize on the Clintons' dislike of the authors, the book's promotional tagline was: "The Book She Doesn't Want You to Read". Initial sales of the book were slow, with Nielsen BookScan reporting only 7,000 copies sold in its first ten days (about a third of what the Bernstein book was doing and far less than Clinton's 2003 autobiography "Living History"). It did not appear on the New York Times Best Seller List. A CBS
Her Way
canal, the aquæductus vestibuli, which transmits the ductus endolymphaticus together with a small artery and vein. Above and between these two openings is an irregular depression that lodges a process of the dura mater and transmits a small vein; in the infant, this depression is represented by a large fossa, the subarcuate fossa, which extends backward as a blind tunnel under the superior semicircular canal. The inferior surface is rough and irregular, and forms part of the exterior of the base of the skull. It presents eleven points for examination: The superior angle, the longest, is grooved for the superior
Petrous part of the temporal bone
also gave a detailed account of the ethmoid bone and its cells in the nose. His contributions to the anatomy of the bones and muscles were very valuable. It was in myology particularly that he corrected Vesalius. He studied the reproductive organs in both sexes, and described the Fallopian tube, which leads from the ovary to the uterus and now bears his name. The aquæductus Fallopii, the canal through which the facial nerve passes after leaving the auditory nerve, is also named after him. Fallopio’s contributions to neuroanatomy, however, are still of interest today due to attempts to better understand
Gabriele Falloppio
smooth and rounded, and it leads into the internal auditory meatus a short canal, about 1 cm. in length, which runs lateralward. It transmits the facial and acoustic nerves and the internal auditory branch of the basilar artery. The lateral end of the canal is closed by a vertical plate, which is divided by a horizontal crest, the falciform crest, into two unequal portions. Each portion is further subdivided by a vertical ridge into an anterior and a posterior part. Behind the internal acoustic meatus is a small slit almost hidden by a thin plate of bone, leading to a
Petrous part of the temporal bone
Foramen tympanicum The foramen tympanicum, or also known as the foramen of Huschke, is an anatomical variation of the tympanic part of the temporal bone in humans resulting from a defect in normal ossification during the first five years of life. The structure was found in 4.6% to as high as 23% of the population. If present, the foramen tympanicum is located at the anteroinferior portion of the external auditory canal, locating posteromedial to the temporomandibular joint. The structure connects the external auditory canal to the infratemporal fossa. Reduction in thickness of the temporal bone may also occur in the
Foramen tympanicum
dinosaurs (and their descendants the birds) and therapsids; so the only ossicle in their middle ears is the stapes. But mammals have a different jaw joint, composed only of the dentary (the lower jaw bone which carries the teeth) and the squamosal (another small skull bone). In mammals, the quadrate and articular bones have evolved into the incus and malleus bones in the middle ear. Here is a very simplified cladogram to illustrate the major lineages involved: The first fully terrestrial vertebrates were amniotes - their eggs had internal membranes which allowed the developing embryo to breathe but kept water
Evolution of mammalian auditory ossicles
tympani bone
Title: Middle ear. Content: Middle ear The middle ear is the portion of the ear internal to the eardrum, and external to the oval window of the inner ear. The mammalian middle ear contains three ossicles, which transfer the vibrations of the eardrum into waves in the fluid and membranes of the inner ear. The hollow space of the middle ear is also known as the tympanic cavity and is surrounded by the tympani bone. The auditory tube (also known as the Eustachian tube or the pharyngotympanic tube) joins the tympanic cavity with the nasal cavity (nasopharynx), allowing pressure to equalize between the middle
Mastoid
Temporal
temporal bone
temporal bone
temporal bone
temporal bone