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Anatomy & Physiology Health Careers Academy Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM Nanette Morris, RN, BA, NBCT Muscular System Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM THE COMPOSITION MUSCLES TENDONS & FASCIA Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM PROPERTIES Excitability: the ability to respond to a stimulus Contractibility: the ability to contract Extensibility: the ability to stretch Elasticity: the ability to return to original shape Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM TYPES INVOLUNTARY: – CARDIAC: the heart – VISCERAL OR SMOOTH: internal organs VOLUNTARY: – SKELETAL: the bones Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM THE MOVEMENTS ADDUCTION: towards ABDUCTION: away from FLEXION: decrease the angle EXTENSION: increase the angle ROTATION: circular Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM THE TONE MUSCLE TONE: normal, steady partial contraction ATROPHY (shrinkage) CONTRACTURES (severe tightening of flexors) occur from lack of use Nanette Morris, RN, BA, NBCT THE MUSCULAR SYSTEM THE DISEASES Muscular Dystrophy: chronic & progressive muscle atrophy Myasthenia Gravis: interrupted nerve impulses Spasms: involuntary cramping Strain: overstretching Nanette Morris, RN, BA, NBCT Muscular System Video http://health.howstuffworks.com/adam-200005.htm Nanette Morris, RN, BA, NBCT Summary The end, my friend Nanette Morris, RN, BA, NBCT THE CIRCULATORY SYSTEM AKA THE CARDIOVASCULAR SYSTEM Nanette Morris, RN, BA, NBCT The Circulatory System Nanette Morris, RN, BA, NBCT THE CIRCULATORY SYSTEM THE COMPOSITION THE HEART THE BLOOD VESSELS THE BLOOD Nanette Morris, RN, BA, NBCT THE CIRCULATORY SYSTEM THE FUNCTION TRANSPORTS O2 & NUTRIENTS TO THE BODY CELLS TRANSPORTS CO2 & WASTES AWAY FROM BODY CELLS Nanette Morris, RN, BA, NBCT The Circulatory System Diseases: Anemia: Low RBC count Arteriosclerosis: hardening of arterial walls Hypertension: high blood pressure Leukemia: malignant disease of bone marrow or lymph tissue Nanette Morris, RN, BA, NBCT Cardiovascular Videos The Heart.webloc Nutrient Exchange.webloc Blood Flow.webloc Cardiovascular System.webloc Red Blood Cell Productio#10C19F Nanette Morris, RN, BA, NBCT Summary, The end, my friend Nanette Morris, RN, BA, NBCT