action potentials are propagated. 12-7 Describe the structure of a synapse‚ and explain the mechanism involved in synaptic activity. 12-8 Describe the major types of neurotransmitters and neuromodulators‚ and discuss their effects on postsynaptic membranes. 12-9 Discuss the interactions that enable information processing to occur in neural tissue. The Nervous System Includes all neural tissue in the body Neural tissue contains two kinds of cells Neurons Cells that send and receive signals
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2. What is the molecular weight of Cl-? 35.45 3. Which MWCO dialysis membranes allowed both of these ions through? 50‚ 100‚ and 200 4. Which materials diffused from the left beaker to the right beaker? Urea‚ NaCl and glucose diffused 5. Which did not? Why? Albumin‚ because the molecular weight exceeded the highest MWCO membrane‚ thus being to large to pass through Activity 2: Simulating Dialysis 1. What happens to the urea concentration in the left beaker (the
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substances across the cell membrane without the use of energy by the cell. During passive transport‚ substances move down their concentration gradient‚ hence no energy is required. Passive transports can happen through three different channels‚ namely 1. lipid bilayer 2. pore protein 3. carrier protein SIMPLE DIFFUSION What is diffusion? Diffusion is the movement of particles from a high density region to a low density region. No energy is needed and no membrane involves in diffusion
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Signals Traveling in Neurons Two opposing ideas about the nervous system * Reticular theory ( the nervous system consisted of a large network of fused nerve cells) * Neuron theory ( the nervous system consisted of distinct elements or cells * Discovery of staining led to the acceptance of neuron theory. Staining is a chemical technique that caused nerve cells to become colored so they stood out from surrounding tissue * A way of electricity is transmitted in groups of neurons‚ such
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EXPERIMENT 1 COLLIGATIVE PROPERTIES OF SOLUTIONS Date: December 03‚ 2013 Locker 21 Members: Vanessa Olga Dagondon Christine Anne Jomocan Janica Mae Laviste Nablo Ken Menez A. TYPES OF DISPERSED SYSTEMS Results and Discussion The first part of the experiment aims to differentiate the different dispersion systems. In this experment‚ three systems are introduced: true solution‚ colloidal dispersion and coarse mixture. The said three systems are classified through a property of colloids known as the
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action potentials. The action potential is the result of a large‚ sudden increase in sodium permeability of the membrane. The resulting rush of sodium ions into the membrane and accumulation of positive charge on its inner surface drives the potential towards Ena. This is followed by repolarisation‚ whereby there is a large increase in the membranes permeability to potassium ions‚ hence the membrane returns to Ek. Explanation of the (ionic) mechanisms underlying generation of the action potential
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Review Sheet 1 Cell Transport Mechanisms And Permeability Essays and Term Papers Search 41 - 60 of 1000 Physioex 8.0 Review Sheet Exercise 10 143 10_133_144_PhyEx8_AP_Ch10 1/10/08 5:18 PM Page 143144 Review Sheet 10 11. Why does this change occur? The following questions refer to Activity 5: Renal... Premium Physioex Exercise 2 Lab And Review Sheet Activity 2 induces active force in the skeletal muscle? b. threshold voltage 6. Review Sheet Results 1. Describe the effect of increasing
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the Hickman catheter‚ but is of smaller size. This catheter is mostly used for pediatric patients. * Pheresis catheters are larger and sturdier than Hickman catheters. Pheresis catheters can also be used for hemodialysis‚ and are often called "dialysis catheters". The Hickman
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max = 8.5 v 2. muscle response: twitch with 3 phases (latent‚ contraction‚ relaxation) 3. effects of increasing stim. Intensity on muscle force: forces increases then stays constant 1. Nervous Sys. I: Action Potential; Ion Channels; Membrane Potential 2. Nervoous Sys. II: Synaptic Potentials and Cellular Integration‚; Synaptic Transmission 3. Endocrine Sys.: Biochemistry‚ Secretion and Transport of Hormones; Actions of Hormones 4. Muscular Sys.: Neuromuscular Junction; Muscle Metabolism
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Ways that plants cope with saline environments Introduction There are a lot of plants in this world managed to grow in different kind of environments by adapting to those environments in certain ways. In this essay‚ plants grow in environment with different salinity are concerned. Plants can be divided into two different groups when it comes to salinity. The first type of plants is the plants that grow and reproduce in saline environment which are called halophytes (Jefferies. 1981). Whereas
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