EXERCISE 3: Neurophysiology of Nerve Impulses ACTIVITY 1: The Resting Membrane Potential Answers 1. The nervous system contains two general types of cells: neuroglia cells and a. nerves. b. cell bodies. c. neurons. d. nephrons. 2. The resting membrane potential of the neuron in this lab under the control conditions was _______ mV. 3. True or False: For most neurons‚ the concentration of Na+ and K+ ions inside and outside the cell are the primary factors that determine the resting membrane
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Anatomy & Physiology II Peripheral Nervous System A. Cranial nerve numbers Give the Roman numeral for the 12 pairs of cranial nerves. VI_ 1. Abducens I__ 7. Olfactory XI__ 2. Accessory II_ 8. Optic VII 3. Facial V__ 9. Trigeminal IX_ 4. Glossophyaryngeal IV_ 10. Trochlear XII 5. Hypoglossal X__ 11. Vagus III 6. Oculomotor VIII 12. Vestibulocochlear B. Cranial nerve function Identify if each cranial nerve is mainly sensory‚ motor‚ or both. S = sensory M = motor B
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Biology 315. Anatomy and Physiology I. Chapter 14. The Brain and Cranial Nerves. Tortora and Grabowski‚ 13th edition. 2012. I. Brain Organization‚ Protection‚ and Nourishment. A. Major Parts of the Brain: brain stem‚ cerebellum‚ diencephalon‚ and cerebrum B. Blood Flow Through the Brain.: substantial; 20% cardiac output at rest; Lack of blood flow > a couple of minutes = permanent damage. Glucose supply must be constant (Sx of hyper/hypoglycemia) 1. Arterial supply
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EXERCISE 3 Neurophysiology of Nerve Impulses Laboratory Report Answer the following questions. (3 points each). 1. What is the difference between membrane irritability and membrane conductivity? Membrane irritability is the ability to respond to a stimuli and convert it in to nerve impulses. Membrane conductivity is the ability to transmit that impulse that is created by membrane irritability. 2. If you were to spend a lot of time studying nerve physiology in the laboratory‚ what
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A Review of Facial Nerve Anatomy Terence M. Myckatyn‚ M.D.1 and Susan E. Mackinnon‚ M.D.1 ABSTRACT An intimate knowledge of facial nerve anatomy is critical to avoid its inadvertent injury during rhytidectomy‚ parotidectomy‚ maxillofacial fracture reduction‚ and almost any surgery of the head and neck. Injury to the frontal and marginal mandibular branches of the facial nerve in particular can lead to obvious clinical deficits‚ and areas where these nerves are particularly susceptible to injury
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Abstract Purpose: Transcutaneous Posterior Tibial Nerve Stimulation (TPTNS) using adhesive skin electrodes is not commonly used due to its low efficacy. Our objective was to verify whether the combination of TPTNS with low dose Trospium chloride in the treatment of females with overactive bladder (OAB) would be more effective than TPTNS alone after failure of behavioral therapy. Materials and Methods: We randomized 30 women with OAB‚ into two groups‚ 15 patients each: Group I received 30 minutes
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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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Neurophysiology has been a subject of study since as early as 4‚000 B.C. In the early B.C. years‚ most studies were of different natural sedatives like alcohol and poppy plants. In 1700 B.C.‚ the Edwin Smith surgical papyrus was written. This papyrus was crucial in understanding how the ancient Egyptians understood the nervous system. This papyrus looked at different case studies about injuries to different parts of the body‚ most notably the head. Beginning around 460 B.C.‚ Hippocrates began
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Background Information Terminal velocity is when a falling object reaches a constant velocity due to a balance in the forces of weight and air resistance. In this experiment‚ we dropped marbles of difference weights in 100 ml of oil to calculate their terminal velocity. Research Question How does the mass of an object effect its terminal velocity? Aim Our aim is to measure the terminal velocity‚ of marbles of different masses‚ in oil. hypothesis Objects of larger mass will take longer to reach
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