Anesthesia Key

Fig. 25.1 Platelet physiology. Platelets are not cells, but rather 1–4 μm anucleated cytoplasmic fragments of megakaryocytes. Platelets contain dense granules and alpha granules. The latter contain adhesion molecules, coagulation and…

Fig. 5.1 Different layers of intercostal muscle. (Reprinted with permission from Philip Peng Educational Series) The intercostal nerves are made up of twelve pairs of thoracic spinal nerves (T1–T12) and…

Fig. 12.1 Cross section of cervical epidural space. 1. Ligamentum flavum, 2. epidural space with venous plexus, 3. spinal ganglion, 4. spinous process, 5. body of vertebra, 6. dorsal branch…

Fig. 3.1 Anatomy of cervical sympathetic chain. (Reprint with permission from Philip Peng Educational Series) The preganglionic fibers of the head and neck region continue to travel cephalad to the…

Fig. 17.1 Sacral hiatus (arrow) with the sacral cornu (∗). (Reproduced with permission from Dr. Danilo Jankovic) Fig. 17.2 Sacral hiatus covered by sacrococcygeal ligament. (Reproduced with permission from Dr….

Fig. 10.1 Schematic diagram showing the pathway of a typical course of lateral femoral cutaneous nerve. (Reprinted with permission from Philip Peng Educational Series) The lateral femoral cutaneous nerve (LFCN)…

Fig. 16.1 Posterior innervation of the sacroiliac joint from the posterior sacral network. S1, S2, and S3 indicate the S1, S2, and S3 posterior sacral foramen. The lateral branches from…

Fig. 6.1 The lumbar plexus showing the ilioinguinal, iliohypogastric, lateral femoral cutaneous, and genitofemoral nerve. (Reprinted with permission from Dr. Maria Fernanda Rojas) The lumbar plexus is formed by the…

Fig. 15.1 Illustration of the posterior sacral ligaments: posterior superior iliac spine (1); iliolumbar ligament (2); interosseous and dorsal sacroiliac ligaments (3); sacrotuberous ligament (4); sacrospinous ligament (5). (Reprinted with…

Origin A direct branch of the upper trunk of the brachial plexus (C4–6) General route Crosses the posterior neck, under the trapezius, travels under the transverse scapular ligament through the…