Reflexes, nervous system ppt

Reflexes, nervous system ppt

• 1.
  For more slides click here DOWNLOAD THIS SLIDE
• 2.
  The Nervous SystemELAINE N. MARIEB EIGHTH EDITION 7 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY
• 3.
  Functional Classification ofNeurons Sensory (afferent) neurons Carry impulses from the sensory receptors Cutaneous sense organs Motor (efferent) neurons Carry impulses from the central nervous system Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 4.
  Functional Classification ofNeurons Interneurons (association neurons) Found in neural pathways in the central nervous system Connect sensory and motor neurons Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 5.
  Neuron Classification Copyright© 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 7.6
• 6.
  The Reflex ArcReflex – rapid, predictable, and involuntary responses to stimuli Reflex arc – direct route from a sensory neuron, to an interneuron, to an effector Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 7.11a
• 7.
  Simple Reflex ArcCopyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 7.11b–c
• 8.
  Types of Reflexesand Regulation Autonomic reflexes Smooth muscle regulation Heart and blood pressure regulation Regulation of glands Digestive system regulation Somatic reflexes Activation of skeletal muscles Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 9.
  Autonomic Reflexes AbdominalReflex Stimulus: light stroking of the abdomen Response: Contraction of the abdominal muscles that pull navel towards stimulus Spinal Segment: T7 - T12 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 10.
  Somatic Reflexes BicepsReflex Stimulus: tap to tendon of biceps brachii muscle Response: Flexion at elbow Spinal Segment: C5, C6 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 11.
  Somatic Reflexes TricepsReflex Stimulus: Tap to tendon of triceps brachii muscle Response: Extension at elbow Spinal Segment: C6, C7 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 12.
  Somatic Reflexes PatellarReflex Stimulus: tap to patellar tendon Response: extension at knee Spinal Segment: L2-L4 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
• 13.
  Somatic Reflexes Ankle-jerkReflex Stimulus: Tap to calcaneal tendon Response: extension (plantar flexion) at ankle Spinal Segment: S1-S2 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings