PERIPHERAL NERVOUS SYSTEM

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Created by
bulangis princess

Cards (6)

  • PERIPHERAL NERVOUS SYSTEM
    • Consists of all neurons outside brain and spinal cord
    • Collects input from different sources, relays input to
    • CNS, and performs action
    • Cranial nerves (12) and Spinal nerves (31)
  • Divisions: Afferent (Sensory): collects input from periphery and sends it to CNS Efferent (Motor): carries processed input from CNS to effector
    1. Autonomic: - response is automatic (involuntary) - controls smooth and cardiac muscles and glands 2. Somatic: - response is voluntary - controls skeletal muscles
  • CRANIAL NERVES
    • 12 pair of cranial nerves; Named by roman numerals
    • 2 categories of functions: sensory and motor
  • 8.10 AUTONOMIC NERVOUS SYTEM 8.10.1 SYMPATHETIC NERVOUS SYSTEM
    activated during times of stress
    • part of fight or flight response
    • prepares you for physical activity by:
    • ↑ HR
    • ↑ BP
    • ↑ BR
    • sending more blood to skeletal muscles
    • inhibiting digestive tract
  • 8.10.2 PARASYMPATHETIC NERVOUS SYSTEM
    • “housekeeper”
    • activated under normal conditions
    • involved in digestion, urine production, and dilation/constriction of pupils, etc.