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IB Biology HL C3.1.9 Pain Reflex Arcs Questions

IB Biology HL C3.1.9 covers rapid involuntary pain withdrawal. Trace the receptor-to-effector pathway through sensory, relay and motor neurons, and identify the skeletal-muscle response.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Trace a pain-reflex arc in order from the receptor through sensory, relay and motor neurons to a skeletal-muscle effector.
  • Identify skeletal muscle as the effector in a pain-reflex arc.

IB Biology HL C3.1.9 Pain Reflex Arcs Questions question 1

[Maximum number: 3]

List the sequence of the components of a reflex arc for a pain withdrawal reflex.

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