typically permits the membrane potential to reach the threshold potential at which it fires the next action potential (pacemaker potential). Thus‚ the pacemaker potential is what drives the self-generated rhythmic firing. This is known as cardiac muscle automaticity.[2] Pacemaker potentials are fired by sinoatrial node (SAN)‚ but also by the other foci. However‚ the last ones have firing frequencies slower than the SAN’s. When other foci attempt to fire at their intrinsic rate‚ they can’t because
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Animal Physiology Friday January 13‚ 2012 What are Animals? Invertebrates No spinal column Vertebrates Spinal column Major Animal Phyla Porifera Cnidaria Platyhel-minths Mollusca Annileda Nematoda Arthro-poda Echino-dermata Chordata What is Animal Physiology? What is Physiology? “The study of how animals work” (function) Knut Schmidt-Nielsen (1915–2007) – came up with the whole scheme of animal physiology from cell to whole organism temperature
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List of Skeletal System Diseases The 206 bones of the skeletal system provide a strong framework upon which muscles‚ tissues and organs can attach. This structure also protects your internal organs and allows your body to move around freely. Like any other body system‚ however‚ disease can affect your skeletal system. Arthritis Arthritis is an inflammatory condition that affects your joints‚ such as the knees‚ or a portion of your spinal column. Typical symptoms of this condition include joint
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WORKSHEET – UNIT 8 Task 1 – Identify the following future ‘tenses’: a) I am going to the theater later this evening. Present continuous b) They’re going to play basketball on Tuesday afternoon. Be going + infinitive c) Jane will have left her job by the end of the week. Future perfect d) The train leaves at 6.00 pm. Present simple e) At this time tomorrow I will be lying on the beach. Future Continuous f) Next year‚ Paul will have been living in Italy for
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1) Skeletal - made up of bones‚ joints and discs. Their function is to give shape to‚ allow movement and give protection to the body. The skeleton bones have 6 parts - Skull (cranium and face)‚ vertebral column (cervical‚ thoracic‚ lumbar‚ sacral‚ coccygeal)‚ thorax‚ shoulder girdle ( clavicle and scapula)‚ pelvis (ilium‚ ischium‚ pubis) ‚ upper limbs (humerus‚ radius‚ ulna‚ carpal‚ metacarpal‚ phalanges) and lower limbs ( femur‚ tibia‚ fibula‚ tarsal‚ metatarsals‚ phalanges). The joints and
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SAT I 2011 / 2012 Question booklet # 8 Grade 12 Cluster Core Subject Mathematics Student Name Student Number Section Coverage SAT I‚ basic reasoning questions. 1. If 10 + x is 5 more than 10‚ what is the value of 2x? (A) −5 (B) 5 (C) 10 (D) 25 (E) 50 2. If x and y are positive integers‚ what are all the solutions (x‚ y) of the equation 3x + 2y = 11? (A) (1‚4) only (B) (3‚1) only (C) (1‚4) and (2‚2) (D) (1‚4) and (3‚1) (E) (2‚2) and (3‚1) 3. When 70‚000 is written as 7.0 × 10n‚ what
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The two main processes involved in muscle contraction are cross-bridge cycling and the length-tension relationship‚ which normally function to maximize contraction in the muscle. Beginning with the activation of a motor unit‚ the ions flow from the motor unit towards the muscle fibers that it innervates by the motor neuron in the same way as a normal muscle would. However since the tissue is damaged‚ the force that is generated by these muscle fibers will not be as great‚ leaving the fibers less
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skeletal system is divided into 2 divisions : the AXIAL SKELETON and the APPENDICULAR SKELETON. the axial skeleton consists of your SKULL‚ HYOID BONE‚ and VERTEBRAL COLUMN. and then your APPENDICULAR SKELETON consists of your SHOULDER GIRDLE‚ UPPER EXTREMITIES‚ and LOWER EXTREMITIES. your skull is the superior portion of your axial skeleton‚ wherein you can find your frontal bone‚ that forms the anterior third of your cranial dome‚ parrietal bone‚ that forms the middle segment of the cranial dome
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References: Brandis K.‚ (2001). Research for Question 22: Fluid Physiology and other Mechanisms of Water Balance. Retrieved from: http://www.anasthesiamcq.com/FluidBook/fl5_9.php Klabunde R. E.‚ (1998-2010). Research on Question 22: Blood volume. Retrieved from: http://www.cvcphysiology.com/Blood%20Pressure/BP025
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Professor: Pierre Louis‚ Vertulie 4/16/13 A&P SKELETAL PROJECT! This system has 206 bones and associated cartilage‚ tendons‚ and ligaments. Because bone is unbending‚ it gives the body a structure‚ maintains its shape‚ and protects essential organs. Bones provide a place for muscles and supporting structures to attach‚ and‚ with the movable joints. A joint is a place of union between two or more bones that may be movable or immovable. Bone also functions as a place for mineral storage
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