I have studied superior cervical ganglion cells in mouse, hamster, rat, guinea pig, and rabbit by electron microscopy to determine how the distribution of synapses on these neurons is affected by the systematic differences in dendritic morphology and preganglionic convergence that are evident in the superior cervical ganglia of these species (Purves, D., and J. W. Lichtman (1985) Science 228: 2...

The influence of ocular innervation on intraocular pressure has been the subject of much investigation. Methods of study have included: stimulation of sympathetic and parasympathetic nerve supply, section of the autonomic nerves, and stimulation of autonomic areas in the midbrain. Stimulation of the cervical sympathetic chain in animals produces a sharp rise in intraocular pressure followed by ...

Superior cervical ganglia from adult rats maintained in organ culture show a progressive increase in the rate of uptake of [(3)H]norepinephrine. The enhanced uptake of norepinephrine is a consequence of the development of axonal sprouts. Formation of axonal sprouts, which appear to have many of the properties of sympathetic nerve endings, is inhibited by colchicine and vinblastine, presumably b...

Leptomeningeal metastasis (LM) of uterine cervical cancer is extremely rare. A 54-year-old woman with uterine cervical cancer treated with surgery and radiotherapy developed LM manifesting as ptosis 17 years later. Although rare, LM should be considered in patients with a history of uterine cervical cancer presenting with cranial nerve symptoms.

The halo fixator may be used for the definitive treatment of cervical spine trauma, preoperative reduction in the patient with spinal deformity, and adjunctive postoperative stabilization following cervical spine surgery. Halo fixation decreases cervical motion by 30% to 96%. Absolute contraindications include cranial fracture, infection, and severe soft-tissue injury at the proposed pin sites....

Definition Varicella-zoster virus (VZV), also known as Human Herpes Virus III (HHVIII), is a member of the herpes virus group. As all the other viruses from this group, VZV can manifests itself as a recurrent infection. After entering the body and causing primary infection, varicella-zoster virus remains latent in the neurons of sensory ganglion, especially dorsal roots of ganglion of the spina...

The vertebrate nuchal ligament is a large elastic structure in the dorsal cervical midline between the occiput, the cervical vertebrae and the cranial thoracic spinous processes, which helps to support the head and neck of the horse (Gellman and Bertram, 2002a). The nuchal ligament consists of funicular (cord-like) and lamellar (sheet-like) parts (Dyson, 2003; Gellman and Bertram, 2002a). The f...

OBJECTIVE To define the kinematic motion patterns of the canine cervical spine, with a particular emphasis on identifying differences between the cranial (C(2)-C(4)) and caudal (C(5)-C(7)) segments, and to determine the significance of coupled motions (CM) in the canine cervical spine. STUDY DESIGN Cadaveric biomechanical study. SAMPLE POPULATION Cervical spines of 8 Foxhounds. METHODS Sp...

Lyme disease is a tickborne illness caused primarily by Borrelia burgdorferi in the United States. CNS involvement typically manifests as 1 or a combination of 3 classic syndromes: meningitis, radiculoneuritis, and cranial neuritis. While facial nerve involvement represents about 80% of cranial neuritis in Lyme neuroborreliosis (LNB), other cranial nerves may also be individually involved; howe...