The Suboccipital Triangle скачать в хорошем качестве

The Suboccipital Triangle

Boundaries Superomedially Rectus capitis posterior major muscle supplemented by the rectus capitis posterior minor. Superolaterally Superior oblique capitis muscle. lnferiorly Inferior oblique capitis muscle. Roof - 1. Skin 2. Superficial Fascia with greater & third occipital Nerve 3. Trapezius & Sternocleidomastoid 4. Splenius capitis 5. Semispinalis capitis & Longissimus capitis Floor 1. Posterior arch of atlas. 2. Posterior atlanto-occipital membrane. Contents 1. Third part of vertebral artery. 2. Dorsal ramus of nerve C1 - suboccipital nerve. 3. Suboccipital plexus of veins. 1. Neck rigidity, seen in cases with meningitis, is due to spasm of the extensor muscles. This is caused by irritation of the nerve roots during their passage through the subarachnoid space which is infected. Passive flexion of neck and straight leg raising test cause pain as the nerves are stretched 2. Cisternal puncture is done when lumbar puncture fails. The patient either sits up or lies down in the left lateral position. A needle is introduced in the midline above the spine of axis in forward and upward direction parallel to an imaginary line extending from external acoustic meatus to nasion. It passes through the posterior atlanto-occipital membrane between the posterior arch of atlas and the posterior margin of foramen magnum. The needle enters the cerebellomedullary cistern and small amount of CSF is withdrawn. 3. Neurosurgeons approach the posterior cranial fossa through this region. ---------------------------------------------------------------------------------------------------------------- My website - https://human-anatomy-lessons.busines... My Blog - https://human-anatomylessons.blogspot... ---------------------------------------------------------------------------------------------------------------- Follow me in blogspot - https://human-anatomylessons.blogspot... _________________________________________________________________________________________________________________ Visit my blogs - https://humananatomyonline.in/ Contact me @ https://t.me/humananatomylessons