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sciatic foramen, below the pyriformis muscle: it ex- tends down viagra blog the back of the thigh, passing between the great trochanter of the femur and the tuberosity of viagra blog the ischium; at the lower third of the thigh it divides into the internal and external popliteal nerves. It sup- plies the hip-joint and the biceps, semitendinosus, semi- membranosus, and adductor buy herbal viagra online magnus nuiscles. 5. The hip-joint is an enarthrodial joint, formed by the head of the femur and the acetabulum. The articular surfaces are covered with cartilage. Near the center of the head of the femur is attached the ligamentum teres. The ligaments are: (1) The cap- sular, which embraces the viagra blog margin of the acetabulum above, and the neck of buy herbal viagra online the femur below. (2) The ileo- femoral or Y ligament, which passes obliquely across the front of the joint, and is attached above to the an- terior inferior spine of the ileum, and below to the anterior intertrochanteric line. (3) The ligamentum teres. (4) viagra blog The cotyloid ligament, which deepens the acetabulum, and bridges over the cotyloid notch, being there called (5) the transverse ligament. The joint has a very extensive synovial membrane. It is capable of the following movements: Flexion, extension, abduc- tion, adduction, circumduction, and rotation. Fifth Cranial Nerve. Origin: (1) Superficial, from the side of the pons Varolii; (2) Deep (sensory root), from the medulla, and upper part of cord; (motor root) from floor of fourth ventricle, and side of the aqueduct of Sylvius. Distribution: First or ophtlialmic branch supplies sensation to conjunctiva and skin of upper eyelid, cornea, skin of forehead and nose, lachrymal glands, mucous buy herbal viagra online membrane buy herbal viagra online of nose. Second, or superior ntaxil- lary brancJi, supplies sensation to skin and conjunctiva of lower lid, nose, cheek, upper lip, upper teeth and alveolar processes, and palate. Third, or viagra blog inferior )naxillary bran<-h, supplies sensation to external audi- tory meatus, side of head, mucous membrane of mouth, anterior two-thirds of tongue, lower teeth, lower lip and skin of the lower part of the face. This branch, in addition, supplies motion to the muscles of mastication (masseter, temporal, external pterygoid, internal pterygoid), also viagra blog to mylohyoid and anterior belly of digastric. 7. The portal system. The veins of the portal sys- tem collect the blood from the digestive tract. They form a trunk, buy herbal viagra online the vena porta-', buy herbal viagra online which enters the liver and breaks up into small branches in its substance. The following veins form the portal system: Inferior mesenteric : drains rectum, sigmoid, flexure, and descending buy herbal viagra online colon. It lies to the buy herbal viagra online left of its artery, and passing behind transverse part of the duodenum and the pancreas, and over left kidney, opens into the splenic buy herbal viagra online vein. (The hemorrhoidal branches inosculate with the hemorrhoidal branches of the internal iliac.) Siiperior mesenteric : drains small intestines, cecum, ascending and descending colon. It passes upwards in front and to right of superior mesenteric artery, in front of transverse part of duodenum, and behind neck of pancreas joins the splenic vein at the upper border of the pancreas to form the portal vein. Splcnie: commences in five or six branches in buy herbal viagra online hilum buy herbal viagra online of spleen ; these unite to form a trunk which passes below splenic buy herbal viagra online artery behind upper border of pancreas from left to right, and in front of aorta: joins superior mesenteric at a right angle. The gastric or coronary: a large vein accompanying coronary artery from right to left along lesser eurva ture of stomach to cardia, where it reaches esophageal tributaries, and, passing to right behind lesser sac, opens into the vena portse. — (Aids to A^iatomy.) The portal vein is formed by the union of the splenic and superior mesenteric veins in front of the right crus of diaphragm and inferior vena cava, and behind the neck of the pancreas. Passes buy herbal viagra online up behind first part of duodenum and then between the layers of the small omentum, behind and between the common bile-duct and hepatic artery, the duct being placed on the right and artery on the left, to transverse fissure of liver. where it divides into right and left branches to corre- sponding lobes, and also gives an off'set to the Spigelian lobe. Connected with the branch to the left lobe are in front the oblitoated umbilical vein and behind the ductus venosus, the remains of a fetal connection with the inferior vena cava. buy herbal viagra online — {Aids to Anutonty.) 8. The external carotid artery arises at the point of bifurcation of the common carotid artery, opposite the upper border of the thyroid cartilage, pa.sses upwards and ends in the substance of the parotid gland behind the neck of the lower jaw, where it divides into the superficial temporal and internal maxillary artei'ies. Relations: In front, skin, fascia, platysma, sternonias- toid, lingual and facial veins, digastric, stylohyoid, hypoglossal nerve, and parotid gland ; behind, superior laryngeal nerve, styloglossus, stylopharyngeus, glosso- pharyngeal nerve, and parotid gland; externally, the internal carotid artery; internally, hyoid bone, pharnyx, superior laryngeal nerve, paiotid gland. The branches of the external carotid artery are: Superior thyroid, lingual, facial, occipital, posterior viagra blog auricular, ascending pharyngeal, superficial temporal, and internal maxillary. PHYSIOLOGY. 1. Cranial nerves that are exclusively motor in function: Motor buy herbal viagra online oculi, trochlear, abducens, facial, spinal accessory, and hypoglossal. The third cranial nerve (motor oculi) arises from the inner side of the crus cerebri, in front of the pons, and buy herbal viagra online from the floor of the aqueduct of Sylvius. It enters the cavernous sinus and then passes forward to enter the orbit through the sphenoidal fissure. While in the buy herbal viagra online sphenoidal fissure it divides into two branches. It is the motor nerve for the muscles of the eyeball, and is distributed to all of these muscles except two. It sup- plies the superior rectus, levator palpebrie superioris, internal rectus, inferior rectus, and inferior oblique