Motor reflexes

• What is a reflex?

  A reflex is an automatic response to stimuli.
• What are the components of a reflex arc?

  • Receptor: detects stimulus
  • Sensory neuron: transmits signal to CNS
  • Integration center: processes information
  • Motor neuron: carries response signal
  • Effector: executes response (muscle or gland)
• What does the Bell-Magendie law state?

  It states that sensory fibers enter the spinal cord dorsally.
• What are the classifications of reflexes?

  1. Somatic reflexes: involve skeletal muscles
  2. Autonomic reflexes: involve smooth muscles and glands
  3. Spinal reflexes: processed in the spinal cord
  4. Cranial reflexes: processed in the brain
  5. Conditioned reflexes: learned responses
• What occurs during the Babinski reflex?

  It occurs when there's absence of descending inhibition.
• How does the plantar reflex differ from the Babinski reflex?

  The plantar reflex shows toe flexion, Babinski shows extension.
• What is significant about children below 3 regarding reflexes?

  • Babinski reflex is normal in children under 3
  • Indicates immature nervous system
  • Reflexes develop as the child grows
• What does it mean when a reflex involves more than one anatomical segment?

  • It engages multiple body parts
  • Examples include head posture, eye movement, and ears
  • Indicates complex reflex actions
• Why can't certain reflexes work parallelly?

  • Involves competing neural pathways
  • Coordination is necessary for effective response
  • Prevents conflicting actions in the body