main factor that leads to the damage of optic nerve is elevated pressure in the eye. The optic nerve is the main visual nerve of the eye. It transmits the images we see back to the brain for interpretation. The shape and tone of the eye is maintained by a pressure within the eye‚ which ranges between 8 mm and 22 mm of mercury. When this pressure is too low‚ the eye becomes softer‚ while an elevated pressure causes the eye to become harder. The optic nerve is the most susceptible part of the eye to high
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Nerve and neuron sound similar to most people‚ but they are two different components of the body (Martini‚ 375). Nerves are found only in the peripheral nervous system‚ while neurons are found in the brain‚ spinal cord‚ and peripheral nerve (Martini‚ 375). Neurons are nerves cells that are specialized for intercellular communication (Martini‚ 375). A neuron is composed of a cell body‚ dendrites and axon (Marieb‚ 376). A nerve is a bundle of axons or dendrites that is wrapped in connective tissues
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well as adds curvature to the spine. Occasionally tumors develop on the brain or spinal cord. Half of the people with NF1 also inhibit learning disabilities. The less common disorder‚ NF2‚ characterizes itself by multiple tumors on cranial and spinal nerves. Hearing loss will nearly inevitably occur in the early teens for people with NF2. Genetic Cause [pic] Most commonly Neurofibromatosis is passed on by family members through genes. However‚ 30 to 50% of newly diagnosed people have no family
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• Diagnosed HIV Stage 4 on treatment (LTE) • CMV retinitis • Central facial palsy (flattening of R nasolabial fold) - paresis of the lower half of one side of the face - damage to upper motor neurons of the facial nerve. - The facial motor nucleus has dorsal and ventral divisions that contain lower motor neurons supplying the muscles of the upper and lower face‚ respectively. The dorsal division receives bilateral upper motor neuron input (i.e. from both sides
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Laboratory 3 Brainstem and Cranial Nerves Associated radiology modules: BRAINSTEM‚ CRANIAL NERVES Brainstem BLOOD SUPPLY The major blood supply to the brain is from two pairs of arteries‚ the vertebrals and the internal carotids. In general‚ the vertebrals supply the brainstem‚ the caudal diencephalon and the caudal and inferior cerebrum. The carotids supply the rostral thalamus and hypothalamus‚ the basal ganglia and the remainder of the cerebrum. Vertebral Branches. The vertebral arteries
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summary Class 1- Wet room Board number Station code Summary of content 1 HN1.T1 General outline of head and neck 2 HN1.T2 Scalp 3 HN1.T3 Face (including parotid salivary gland) 4 HN1.T4 Neck triangles 5 HN1.T5 Facial and trigeminal nerves 6 HN1.T6 Connections of the neck Class 2 - Dry room Board number Station code Summary of content 1 HN1.H1 Basic histology of salivary glands 2 HN1.B1 Bones of the skull 3 HN1.B2 Cervical vertebrae 4 HN1.R1 Radiology of
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identify neurologic changes by performing a bedside assessment. A proper bedside assessment includes: vital signs‚ pupillary responses‚ posturing response‚ hand grasp‚ muscle strength and symmetry‚ sensory evaluation‚ and an evaluation of the cranial nerves (Crimlisk & Grande‚ 2004). A registered nurse may also be asked to help a physician perform neurologic tests. These include superficial cutaneous reflexes‚ deep tendon reflexes‚ and vestibular reflexes (Crimlisk & Grande‚ 2004). Superficial
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the trigeminal nerve‚ except for the small area over the angle of the mandible and parotid gland‚ which is supplied by the great auricular nerve (C2 and C3). The points of an outcome of sensitive branches of a trigeminal nerve project on the vertical line which has been carried out between an internal and median third of supraorbital edge. The ophthalmic nerve supplies the skin of the forehead by means of the terminal cutaneous branches. They are: supraorbital nerve and supratrochlear nerve‚ which
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Gross Anatomy of the Central Nervous System Laszlo Vass‚ Ed.D. Version 42-0011-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which
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temperature changes. e.g. Plantar reflex Somatic Reflexes (cont) Cranial Nerve Reflex 1. Corneal reflex: a function of cranial nerve V (trigeminal). Touching of the cornea causes blinking to occur. 2. Gag reflex: a function of cranial nerves IX (glossopharyngeal) & X (vagus). Touching of the uvula causes gag reflex. 3 1/3/2013 Autonomic Reflexes Pupillary reflexes: reflex caused by light stimulation of cranial nerve II
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