Part 1 of 17 - 1.67/ 5.0010004 Points Question 1 of 60 0.0/ 1.667 Points All of the following belong to feedback systems which control homeostasis EXCEPT A. All of the above are basic components of the feedback system. B. control center. C. receiver. D. receptor. E. effector. Answer Key: C Feedback: Please review chapter 1. Question 2 of 60 0.0/ 1.667 Points Group of related organs that have a common function is called a(n) A. organ.
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The Tired Swimmer Case Two BIO: 201-104 November 11‚ 2010 Part I: Meet Annie 1. What vital signs or symptoms does Annie exhibit? a. Blurred vision and eye strain b. Hands ache and feel weak c. Gasping for air d. Weakness & Constant fatigue 2. Can you see any common features in Annie’s signs and symptoms? With blurred vision and eyestrain we must look at the optic nerve within the brain. From there‚ what could be causing the difficulty breathing and weakness
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patch-clamp electrophysiology‚ investigators have recently cloned‚ expressed‚ and characterized the genes encoding many of these proteins. Ion-channel proteins are under intense scrutiny in an effort to determine their roles in pathophysiology and as potential targets for drugs. Defective ion-channel proteins are responsible for cystic fibrosis‚1 the long-QT syndrome‚2 heritable hypertension (Liddle’s syndrome)‚3‚4 familial persistent hyperinsulinemic hypoglycemia of infancy‚5‚6 hereditary nephrolithiasis
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(+) ions (Ca++) can pass into the muscle fiber which depolarizes the membrane potential. As this happens the voltage-gated sodium channels are triggered opens and allows sodium ions (NaCl-) enters the fiber and action potential spreads along the entire membrane to initiate excitation-contraction coupling. Following the depolorization of the membrane‚ repolarization occurs‚ which reestablishes the negative membrane potential. The ACh within the synaptic cleft is also degraded by AChE so that ACh cannot
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Catapult By: Hasan Abdullah (OSIS#200100360) Group: 1 Class: Introduction to Engineering (Mr.Cornish) Period: 9 Date: May 20‚ 2013 PROJECT OBJECTIVE The project objective was to learn about basic projectile motion theory‚ the mathematical models applicable to various projectile motion situations (e.g. catapult launch)‚ and construction techniques for specific raw building materials. In addition‚ a catapult was to be implemented and built based on an
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TABLE OF CONTENTS 1. IA (Alkaline Metals) 1.1. H………………………………………………………………………..2 1.2. Li………………………………………………………………………..2 1.3. Na………………………………………………………………………2 1.4. K………………………………………………………………………..3 1.5. Rb………………………………………………………………………3 1.6. Cs………………………………………………………………………3 1.7. Fr……………………………………………………………………….4 1. IIA (Alkaline Earth Metals) 2.8. Be………………………………………………………………………4 2.9. Mg………………………………………………………………………4 2.10. Ca………………………………………………………………………4
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Myasthenia gravis literally translates to “grave muscle weakness;” since 1672‚ when the disease was first recorded‚ to the early twentieth-century‚ the majority of patients diagnosed with it ended up passing away. Medical practitioners back then did not know myasthenia gravis is an autoimmune disease that attacks the neuromuscular junction‚ causing weakness and abnormal fatigue of the muscles. Nor‚ did they have sophisticated treatment options‚ such as drugs and surgery‚ to care for their patients
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kinetic energy? Give your answer as a decimal. 2 An electric winch is used to lift a load of mass 2 kg a height of 1.5 m. It uses 50 J of energy when it does this. i) Calculate the amount of potential energy gained by the load using the formula: Ep = mgh where Ep is the potential energy gained m is the mass of the load in kg g is the acceleration due to gravity (9.8 ms-2) h is the vertical distance moved by the load ii) Now calculate the efficiency of the
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energy of 15 000 J just prior to hitting the bucket of water. If Missy’s mass is 50 kg‚ then what is her speed? Solution: According to energy conservation‚ the kinetic energy at the bottom of the dive (15‚000J) is equal to her gravitational potential energy before the dive. We can use this fact to find her dive height: PE = mgh h = PE/mg = 15‚000J / (50kg)(9.81m/s²) = 31m (rounded) Her speed can also be found from energy conseration: E(final) = E(initial) 0.5mv² = mgh v = √[2gh]
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Front this divison of the peripheral nervous system includes the neurons found along the GI tract Back enteric nervous system Front name for a group of neuron cell bodies in the CNS Back nucleus Front name for a group of neuron cell bodies in the PNS Back ganglia Front these ions are cross the neuron cell membrane during a hyperpolarization Back Cl- K+ Page 1 Front Back these gates respond to chemical stimuli such as nerutransmitters
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