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Daniel Ramirez

Anatomy weeks 6-12

QuestionAnswer
Skeletal muscle connective tissue components Endomysium-delicate membrane covers muscle fibers. Perimysium-tough, binding fascicles. Epimysium-coarse sheath covering muscle. Fuse together as tendon or aponeurosis.
Origin of muscle Insertion point of attachment that does not move with contraction. point of attachment that moves when contraction.
muscle actions prime mover agonist antagonist synergist fixator directly performs specific movements. mover muscle that performs movement, including prime. contracting muscle directly oppose prime, precision and control. contract at same time as prime, facilitate prime efficiency. joint stabilizers(synergist)
bone joints levers fulcrums muscle pulls bone @ point of attachment causing insertion bone to move @ joint
lever classes 1st 2nd 3rd fulcrum between pull and load. load between fulcrum and joint where pull occurs. pull is between fulcrum and load, rapid extensive movement, and most common type lever in body.
Central nervous system brain and spinal cord integrates sensory information, process, and initiates outgoing response.
Peripheral nervous system Cranial nerves, spinal nerves, nerves outside of CSN.
Afferent division incoming sensory pathways
Efferent division outgoing motor pathways
Somatic nervous system Motor-conscious skeletal muscle movement. Sensory-feedback information to integration center in CNS.
Autonomic nervous system Efferent division of ANS carries info to visceral effectors. Sympathetic-fight or flight response. Parasympathetic-rest, repair, digest.
Cells of nervous system Glia- neuroglia (CNS) Astrocytes- connect neurons to capillaries. Microglia-phagocytosis Oligodendrocytes-bundle nerve fibers, produce myelin sheath. (PNS)Schwann cells-in peripheral neurons, myelin support, sheath growth, nodes of Ranvier.
Created by: danielr3267
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