occipital arteries造句

• The muscles receives blood from the occipital artery.
• It then anastomoses with the ascending occipital arteries.
• The occipital artery also plays a role.
• A minute filament descends and joins the hypoglossal nerve as it winds around the occipital artery.
• This flap is supplied by the superficial temporal artery and vessels, the vertebral and occipital arteries and the perforators of the trapezius muscle.
• Occasionally it follows the course of the occipital artery and ends in the internal jugular; in other instances, it joins the posterior auricular vein and through it opens into the external jugular.
• The chief communications outside the skull take place between the superior and inferior thyroid arteries, and the deep cervical artery and the descending branch of the occipital artery; the vertebral artery takes the place of the internal carotid artery within the cranium.
• On the medial side of the process is a deep groove, the mastoid notch ( digastric fossa ), for the attachment of the digastric muscle; medial to this is a shallow furrow, the occipital groove, which lodges the occipital artery.
• At the back part and close to the upper or sagittal border is the parietal foramen, which transmits a vein to the superior sagittal sinus, and sometimes a small branch of the occipital artery; it is not constantly present, and its size varies considerably.
• It is perforated by numerous foramina ( holes ); one of these, of large size, situated near the posterior border, is termed the mastoid foramen; it transmits a vein to the transverse sinus and a small branch of the occipital artery to the dura mater.
• The most common vessels involved in the pain of migraine are the terminal branches of the external carotid artery, and in particular, the superficial temporal artery and its frontal branch, and the occipital artery, but the maxillary, posterior auricular, supra-orbital, and supra-trochlear branches may also be involved.
• GCA affects arteries of the head and neck, including the three arteries that branch out from the arch of the ascending aorta, and their branches the thoracic aorta, the axillary arteries, the vertebral arteries, and further on in the head in the ophthalmic and external carotid arteries ( the temporal and occipital arteries ).
• It is relatively superficial at its start, where it is contained in the carotid triangle of the neck, and lies behind and medial to the external carotid, overlapped by the sternocleidomastoid muscle, and covered by the deep fascia, the platysma, and integument : it then passes beneath the parotid gland, being crossed by the hypoglossal nerve, the digastric muscle and the stylohyoid muscle, the occipital artery and the posterior auricular artery.
• The exact relation of the parts to one another in the jugular foramen is as follows : the inferior petrosal sinus lies medially and anteriorly with the meningeal branch of the ascending pharyngeal artery, and is directed obliquely downward and backward; the transverse sinus is situated at the lateral and back part of the foramen with a meningeal branch of the occipital artery, and between the two sinuses are the glossopharyngeal, vagus, and accessory nerves.