Details Title: A&P 106 Description: muscular system Total Flash Cards: 32 Created: 09/25/2007 19:41:52		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Health Care Flashcards
Cards in this set: Term 3 functions of skeletal muscle Definition Movement heat posture Term Characteristics of skeletal muscle Definition Contractility Excitability Extensibility Elasticity Term contractility Definition (shorten w force, lengthen passively) Term excitability Definition (responds to stimulus) Term extensibility Definition (can stretch) Term elasticity Definition (recoil to original resting length) Term Origin Definition stationary attachment Term Insertion Definition more movable attachment Term Synergist Definition muscles with the same fx work together Term Antagonists Definition have opposing fx Term Sarcolemma Definition cell membrane of muscle fibre Term Sarcoplasm Definition reservoir for calcium ions Term Myofibril Definition linear arrangement of sarcomeres within a muscle fibre Term Sarcomere Definition unit of contraction in a muscle fibre Term Neuromuscular junction Definition termination of motor neuron on the sarcolemma of muscle fibre Term Synapse Definition space between axon of one neuron and cell body or dendrite of the next Term Contracting proteins of sarcomeres Definition actin and myosin Term aponeurosis Definition flat tendon Term flexion extension Definition decrease angle of a joint increase angle of a joint Term adduction abduction Definition adduction toward midline abduction away from midline Term pronation supination Definition pronation turn palm downward supination turn palm up Term dorsiflexion plantar flexion Definition dorsiflexion toes up plantar flexion toes down Term cerebrum Definition part of the brain that contraction of voluntary muscle Term cerebellum Definition controls coordination Term hypertrophy atrophy Definition hypertrophy bigger atrophy smaller Term common injection sites Definition gluteus medius/maximus ventral gluteal (hip) vastus lateralus (thigh) deltoid (upper arm) Term why use larger muscles for injection sites? Definition Avoid nerves, larger muscle belly (can take more medication) Term Hemoglobin Definition Hemoglobin stores o2 in blood Term Myoglobin Definition Myoglobin stores o2 in muscle Term Creatinine phosphate Definition Creatinine phosphate stores energy that can be used quickly Term acetylcholine Definition makes sarcolemma permeable to sodium atoms Term cholinesterase Definition inactivates acetylcholine