1. Label a diagram of the respiratory system?? 2. Describe the process of breathing?? Breathing consists of two phases. The first is inspiration and the second is expiration. During inspiration‚ the diaphragm and the intercostal muscles contract. The diaphragm moves downwards increasing the volume of the thoracic cavity and the intercostal muscles pull the ribs up expanding the rib cage and further increasing this volume. This increase of volume lowers the air pressure in the alveoli to below
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Human Physiology Lab Special Senses Cutaneous Senses and Vision September 24/26‚ 2012 Our bodies are capable of sensing a wide spectrum of stimuli. We are consciously aware of some of the information our bodies perceive‚ but much of the information that is sensed is beyond our consciousness. Receptors responsible for perception of stimuli are found in many places: skin‚ eyes‚ ears‚ mouth‚ blood vessels‚ lungs‚ brain—frankly‚ every cell in the body has sensory receptors. These receptors are
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Home Group Leader Assignment: Physiology of Physical Activity Physical activity has been a part of societies for centuries. Activity has been incorporated into people’s daily lives in various forms such as sport‚ weightlifting‚ running‚ hiking‚ swimming and walking to name a few. Many perform physical activity for physical‚ emotional and mental well-being while others take part for leisurely fun. The physiology of how physical activity affects our bodies has been studied thoroughly. In the following
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Copyright #ERS Journals Ltd 2002 European Respiratory Journal ISSN 0903-1936 Eur Respir J 2002; 19: 6–7 DOI: 10.1183/09031936.02.00281002 Printed in UK – all rights reserved EDITORIAL Understanding cough A.H. Morice*‚ J. Widdicombe#‚ P. Dicpinigaitis}‚ L. Groenkez A recent meeting on antitussive strategies presented an opportunity to review current practice in the treatment of acute cough due to respiratory tract infection (RTI). Multiple factors contribute to the present lack
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is pumped by the heart and circulated through the body via a system of arteries and veins. It is an essential component of the body and without it we would not be able to survive. This paper discusses the anatomy and physiology of blood in a brief review. Anatomy and Physiology of Blood The blood is made up of four main components. These are plasma‚ red blood cells‚ white blood cells and platelets. The blood is circulated throughout the body by one of two types of vessels; arteries or veins
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FROG MUSCLE PHYSIOLOGY 2) What was the smallest voltage required to produce max contraction? What proportion of the muscle fibers in the muscle do you think were contracting to produce this maximal response? Muscle fibers act in response to isolated stimuli in an all or none fashion. However‚ a muscle organ‚ such as the gastrocnemius muscle‚ is composed of many individual muscle fibers. It is known that all of the fibers in a muscle do not have the same threshold and that a stimulus applied to
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CHAPTER 1 Coagulation Pathway and Physiology Jerry B. Lefkowitz‚ MD Introduction Our understanding of blood clotting is intimately tied to the history of civilization. With the advent of writing 5000 years ago‚ it could be argued that the first symbols used for blood‚ bleeding‚ or clotting represented the first published coagulation pathway. The ancient peoples of the world always held blood in utmost mystical esteem. Through the ages‚ this esteem has been transmitted to modern times in the
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1. Understand what is the same about all life‚ and what makes life diverse LOCS A. List the five characteristics all organisms on Earth share B. Explain why the first four are required for life C. Differentiate heterotrophs and autotrophs 2. Understand that energy to sustain life is derived from chemical potential energy LOCS A. Relate the distance of electrons from their protons to the concept of chemical potential energy B. Define exergonic and endergonic chemical reactions
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Laboratory – Muscle Physiology A. MUSCLE TONUS Observations‚ Report and Conclusion: A. Define muscle tonus and give its importance * Muscle tonus refers to a state of slight muscular contraction maintained by synchronous impulses of low frequency‚ discharged by the spinal motor neurons. * Reflex in nature. * Muscle tonus is a small amount of tension in the muscle due to weak‚ involuntary contractions of its motor units. Muscle tonus is important in a sense that it governs the
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Lab Report: Exercise 5: Cardiovascular Physiology Type the answers to the following questions into the document. Save the file as YourLastName_Ex5LabReport.rtf and submit for grading via the associated assignment link. Activity 1: Heart Sounds 1. What is the cardiac cycle? The cardiac cycle is one complete heart beat. During the cycle each atrium and ventricle will contract and relax once. THe contraction of the chamber is called systole and the relaxation is called diastole. The average
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