227 .205 Lecture Notes - Orbicularis Oculi Muscle, Abdominal Internal Oblique Muscle, Transverse Abdominal Muscle
Document Summary
Topical local nerve blocks: auriculopalpebral block. To desentitise the auriculopalpebral nerve that supplies motor fibres to the orbicularis oculi muscle. The nerve runs from the base of the ear along the facial crest , past and ventral of the eye , giving off branches on the way. Indication- for examination of the eyeball(prevents eyelid closure during examination/surgery of eyes) Site- rostral to the base of the ear at the end of the zygomatic arch(at the caudo-dorsal border of the zygomatic arch) For desentitisation of the horn during dehorning . Opthalmic division of the fifth cranial nerve(trigeminal nerve) Injected on the upper third of the temporal ridge: paravertebral block. Abdominal wall: the distribution of lumbar spinal nerves. -important nerves to the abdominal wall to desensitize t13,l1,l2- to desensitize for rumenectomy and c-section. Abdominal wall: caudoventral flow of sensory innervation skin area may be a dermatome- a dermatome is an area only supplied by one spinal nerve.
