EQ What is the difference between spinal and cranial nerves?

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Presentation transcript:

EQ What is the difference between spinal and cranial nerves?

Cranial nerves 12 pairs of nerves that are associated with the brain Most only service the head

Spinal nerves 31 pairs that branch from the spinal cord Named by where they branch from the cord: Vertebral regions Cervical, thoracic, lumbar, sacral, and coccygeal

EQ: What is a reflex arc?

Reflex A rapid motor response to a stimulus Involves the PNS and spinal cord only most are unlearned and involuntary…you are born with them! Forms a reflex arc receptor Sensory neuron Spinal cord Motor neuron effector