over would trigger the onset of glaucoma. When this pressure rises‚ it presses on and causes harm to the optic nerve. Any damage to the optic nerve would prevent visual information from being sent to the brain and therefore visual loss occurs. The exact pathophysiology of glaucoma is not fully comprehended but experts believe that the rise in pressure on the retina causes cells and nerve ganglions in the retina to die. Moreover‚ compression of small blood vessels occur in the retina and this deprives
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Simplex Virus (HSV) infection involving the facial nerve and remains. It will affect about 1 in 60 people during their lifetime. Men and women are equally affected as are the right and left sides of the face. Pregnant women‚ especially during the third trimester are more prone to develop Bell’s palsy. The facial nerve‚ on its path from the brain stem to the face passes through a narrow bony canal in the base of the skull. The viral infection of the nerve is thought to produce inflammation and swelling
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Effect of Vagus Nerve Stimulation Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The effect of the parasympathetic nervous system on the heart is to You correctly answered: a. decrease the heart rate. 2. The branch of the autonomic nervous system that dominates during exercise is You correctly answered: b. the sympathetic branch. 3. Parasympathetic stimulation reaches the heart through You correctly answered: d. vagus nerves‚ which are cranial
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1) The brain and spinal cord comprise the _____ nervous system. A) autonomic B) peripheral C) central D) efferent E) afferent 2) Voluntary control of skeletal muscles is provided by the _____ nervous system. A) sympathetic B) parasympathetic C) afferent D) somatic E) autonomic 3) The part of the peripheral nervous system that brings information to the central nervous system is A) motor. B) afferent. C) efferent. D) autonomic. E) somatic. 4) The myelin sheaths that surround the axons of some of the
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cornea that may be black‚ brown‚ gray‚ green or blue? A. Retina B. cornea C. iris D. lens 2. There are tiny raised bits of vein-like parts that make your tongue feel rough. What are they? A. Taste buds B. cilia C. papillae D. nerves 3. The flowers have beautiful colors. Which sense organ help you tell this? A. Eyes B. ears C. nose D. skin 4. Nicole cannot recognize one or more clors‚ she may have _____ A. Sty B. strabismus C. color blindness D. cataract
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blunt (glass) probe separate the muscles of the upper thigh from the pelvis to the knee‚ exposing the sciatic nerve without touching it. Carefully cut free the sciatic nerve at the pelvic end and separate it from any connective tissue‚ muscle‚ or nerve branches down to the knee. Using heavy scissors cut through the femur and thigh muscle about 1 inch above the knee; make sure not to cut the nerve. The gastrocnemius is the larger of the two muscles below the knee and is attached to the Achilles tendon
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of it‚ you walk into the fog. Within seconds of inhaling the mist you collapse to the ground shaking violently‚ unable to breathe. Within minutes you and countless people around you are dead. What just happened was a chemical weapon attack with the nerve gas VX‚ one of the many chemical weapons out there in military warehouses and labs. Biological warfare is the deadly sister to chemical warfare‚ it uses diseases such as botulism and anthrax to try to wipe out soldiers and civilians alike. Even with
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widely distributed‚ simple in structure. We do not perceive consciously such as blood pressure. Special senses: limited to the head- are inverted in the cranial nerves. Vision‚ hearing‚ equilibrium‚ taste‚ and smell. Bradykinin: most potent pain stimulus known. And promotes healing. Neuropathy: sense of pain is lost due to the nerve damage. Nociceptors do not occur in the brain and liver however they occur in the meninges. Dura‚ arachnoid‚pia. Histamine‚ prostaglandinds‚ and serotin also stimulate
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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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joint. The tight space between this fibrous band and the wrist bone is called the carpal tunnel. The median nerve passes through the carpal tunnel to receive sensations from the thumb‚ index‚ and middle fingers of the hand. Any condition that causes swelling or a change in position of the tissue within the carpal tunnel can squeeze and irritate the median nerve. Irritation of the median nerve in this manner causes tingling and numbness of the thumb‚ index‚ and the middle fingers - a condition known
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