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Canalis
In anatomy, a canal (or canalis in Latin) is a tubular passage or channel which connects different regions of the body. Examples include: * Cranial Region ** Alveolar canals ** Carotid canal ** Facial canal ** Greater palatine canal ** Incisive canals ** Infraorbital canal ** Mandibular canal ** Optic canal ** Palatovaginal canal ** Pterygoid canal * Abdominal Region ** Inguinal canal * Pelvic Region ** Anal canal ** Pudendal canal * Upper Extremities ** Suprascapular canal ** Carpal canal ** Ulnar canal ** Radial_tunnel_syndrome, Radial canal * Lower Extremities ** Adductor canal ** Femoral canal ** Obturator canal See also * Foramen * Canaliculus (other), Canaliculus References *''Dorland's Illustrated Medical Dictionary'', 27th ed. 1988 W.B. Saunders Company. Philadelphia, PA. Anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adductor Canal
The adductor canal, also known as the subsartorial canal or Hunter’s canal, is an aponeurotic tunnel in the middle third of the thigh. It extends from the apex of the femoral triangle to the adductor hiatus. Structure The adductor canal extends from the apex of the femoral triangle to the adductor hiatus. It is an intermuscular cleft situated on the medial aspect of the middle third of the anterior compartment of the thigh, and has the following boundaries: * medial wall - sartorius. * Posterior wall - adductor longus and adductor magnus. * Anterior- vastus medialis. It is covered by a strong aponeurosis which extends from the vastus medialis, across the femoral vessels to the adductor longus and magnus. * Lying on the aponeurosis is the sartorius (tailor's) muscle. Contents The canal contains the subsartorial artery (distal segment of the femoral artery), subsartorial vein (distal segment of the femoral vein), and branches of the femoral nerve (specifically, the saphenou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Facial Canal
The facial canal (''canalis nervi facialis''), also known as the Fallopian canal, is a Z-shaped canal running through the temporal bone of the skull. It runs from the internal acoustic meatus to the stylomastoid foramen. It contains the facial nerve (CN VII), after which it is named. Structure The facial canal runs from the internal auditory meatus to the stylomastoid foramen. In humans it is approximately 3 cm long, which makes it the longest human osseous canal of a nerve. It is located within the middle ear region, according to its shape it is divided into three main segments: the labyrinthine, the tympanic, and the mastoidal segment. It contains the facial nerve (CN VII), after which it is named. The labyrinthine segment runs from the internal auditory meatus to the geniculate ganglion, superior to cochlea. Initially, it runs anterolaterally before turning sharply posterolaterally at the geniculate ganglion (first bend of the facial canal). The tympanic segment start ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandibular Canal
In human anatomy, the mandibular canal is a canal within the mandible that contains the inferior alveolar nerve, inferior alveolar artery, and inferior alveolar vein. It runs obliquely downward and forward in the ramus, and then horizontally forward in the body, where it is placed under the alveoli and communicates with them by small openings. On arriving at the incisor teeth, it turns back to communicate with the mental foramen, giving off a small canal known as the mandibular incisive canal, which run to the cavities containing the incisor teeth. It carries branches of the inferior alveolar nerve and artery. It is continuous with the mental foramen (which opens onto front of mandible) and mandibular foramen (on medial aspect of ramus). Variations The mandibular canal is fairly close to the apices of the second molar in 50% of the radiographs. In 40%, canal is away from the root apices, and in only 10% of the radiographs the root apices appeared to penetrate the canal. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optic Canal
The ''optic foramen'' is the opening to the optic canal. The canal is located in the sphenoid bone; it is bounded medially by the body of the sphenoid and laterally by the lesser wing of the sphenoid. The superior surface of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove), above and behind which lies the optic chiasma; the groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery (with accompanying sympathetic nerve fibres) into the orbital cavity. Compared to the optic nerve, the ophthalmic artery is located inferolaterally within the canal. The left and right optic canals are 25mm apart posteriorly and 30mm apart anteriorly. The canals themselves are funnel-shaped (narrowest anteriorly). Additional images File:Orbital_bones.png, The seven bones which articulate to form the orbit. File:Gray145.png, Sphenoid bone. Upper surface. Fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygoid Canal
The pterygoid canal (also vidian canal) is a passage in the sphenoid bone of the skull leading from just anterior to the foramen lacerum in the middle cranial fossa to the pterygopalatine fossa. Structure The pterygoid canal runs through the medial pterygoid plate of the sphenoid bone to the back wall of the pterygopalatine fossa. Contents It transmits the nerve of pterygoid canal, (Vidian nerve), the artery of the pterygoid canal The artery of the pterygoid canal (or Vidian artery) is an artery in the pterygoid canal, in the head. It usually arises from the external carotid artery, but can arise from either the internal or external carotid artery or serve as an anastomosi ... (Vidian artery), and the vein of the pterygoid canal (Vidian vein). Additional images File:Gray192.png, Medial wall of left orbit. External links * * () References Foramina of the skull {{musculoskeletal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpal Canal
In the human body, the carpal tunnel or carpal canal is the passageway on the palmar side of the wrist that connects the forearm to the hand. The tunnel is bounded by the bones of the wrist and flexor retinaculum from connective tissue. Normally several tendons from the flexor group of forearm muscles and the median nerve pass through it. There are described cases of variable median artery occurrence. When any of the nine long flexor tendons passing through the narrow carpal canal swell or degenerate, the narrowing of the canal may result in the median nerve becoming entrapped or compressed, a common medical condition known as carpal tunnel syndrome (CTS). Structure The carpal bones that make up the wrist form an arch which is convex on the dorsal side of the hand and concave on the palmar side. The groove on the palmar side, the ''sulcus carpi'', is covered by the flexor retinaculum, a sheath of tough connective tissue, thus forming the carpal tunnel. On the side of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anal Canal
The anal canal is the part that connects the rectum to the anus, located below the level of the pelvic diaphragm. It is located within the anal triangle of the perineum, between the right and left ischioanal fossa. As the final functional segment of the bowel, it functions to regulate release of excrement by two muscular sphincter complexes. The anus is the aperture at the terminal portion of the anal canal. Structure In humans, the anal canal is approximately long, from the anorectal junction to the anus. It is directed downwards and backwards. It is surrounded by inner involuntary and outer voluntary sphincters which keep the lumen closed in the form of an anteroposterior slit. The canal is differentiated from the rectum by a transition along the internal surface from endodermal to skin-like ectodermal tissue. The anal canal is traditionally divided into two segments, upper and lower, separated by the pectinate line (also known as the dentate line): * upper zone (zona col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatomy
Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its beginnings in prehistoric times. Anatomy is inherently tied to developmental biology, embryology, comparative anatomy, evolutionary biology, and phylogeny, as these are the processes by which anatomy is generated, both over immediate and long-term timescales. Anatomy and physiology, which study the structure and function (biology), function of organisms and their parts respectively, make a natural pair of related disciplines, and are often studied together. Human anatomy is one of the essential basic research, basic sciences that are applied in medicine. The discipline of anatomy is divided into macroscopic scale, macroscopic and microscopic scale, microscopic. Gross anatomy, Macroscopic anatomy, or gross anatomy, is the examination of an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suprascapular Canal
The suprascapular canal is an anatomical passage between two openings found on the upper dorsal aspect of the shoulder. It is found bilaterally running on superio-lateral aspect of the dorsal surface of the scapula underneath the supraspinatus muscle. Structure The suprascapular canal is an osteofibrous canal situated in the spinoglenoid fossa conveying suprascapular nerve and vessels. Its passage covered by the supraspinatus fascia and connects between its entrance formed by the suprascapular notch (enclosed by the suprascapular ligament) and its exit formed by spinoglenoid notch (enclosed by the spinoglenoid ligament). Clinical significance As the suprascapular nerve travels through the suprascapular canal narrow sites, it can potentially get entrapped leading to suprascapular nerve entrapment syndrome. The causes have different anatomical implications at each site. The mechanisms varies and range from anatomical variations to pathological formations as well as from nerve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foramen
In anatomy and osteology, a foramen (; in Merriam-Webster Online Dictionary '. plural foramina, or foramens ) is an open hole that is present in extant or extinct s. Foramina inside the of typically allow , |
Obturator Canal
The obturator canal is a passageway formed in the obturator foramen by part of the obturator membrane and the pelvis. It connects the pelvis to the thigh. Structure The obturator canal is formed between the obturator membrane and the pelvis. The obturator artery, obturator vein, and obturator nerve all travel through the canal. Clinical significance An obturator hernia is a type of hernia involving an intrusion into the obturator canal. The obturator nerve can be compressed in the obturator canal. The obturator canal may be compressed during pregnancy and major traumatic injuries, causing obturator syndrome. See also * Obturator fascia The obturator fascia, or fascia of the internal obturator muscle, covers the pelvic surface of that muscle and is attached around the margin of its origin. Above, it is loosely connected to the back part of the arcuate line, and here it is conti ... References External links Pelvis {{Anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Femoral Canal
The femoral canal is the medial (and smallest) compartment of the three compartments of the femoral sheath. It is conical in shape. The femoral canal contains lymphatic vessels, and adipose and loose connective tissue, as well as - sometimes - a deep inguinal lymph node. The function of the femoral canal is to accommodate the distension of the femoral vein when venous return from the leg is increased or temporarily restricted (e.g. during a Valsalva maneuver). The proximal, abdominal end of the femoral canal forms the femoral ring. The femoral canal should not be confused with the nearby adductor canal. Anatomy The femoral canal is bordered: * anterosuperiorly by the inguinal ligament * posteriorly by the pectineal ligament lying anterior to the superior pubic ramus * Medially by the lacunar ligament * Laterally by the femoral vein Physiological significance The position of the femoral canal medially to the femoral vein is of physiologic importance. The space of the canal all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
