Module 3: Neural and Hormonal System

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Across
  1. 3. (2 words) the gland that influences the hypothalamus and regulates growth and control of the other endocrine glands
  2. 6. (3 words) the sensory and motor neurons that connect the central nervous system to the rest of the body
  3. 11. (2 words) cells in the nervous system that support, nourish, and protect neurons
  4. 13. chemical messengers that travel through the bloodstream and affect other tissues
  5. 14. (2 words) the body’s slow chemical communication system; set of glands that secrete hormones into the bloodstream
  6. 18. the neuron extension that passes messages through its branches to other neurons or to muscles or glands
  7. 19. (2 words) a pair of endocrine glands that sit above the kidneys and secrete hormones that help arouse the body in time of stress
  8. 20. the neurons that carry incoming information from the sensory receptors to the brain and spinal cord
Down
  1. 1. the division of the PNS that controls the body’s glands and muscles of the internal organs
  2. 2. the level of stimulation required to trigger a neural impulse
  3. 3. the division of the autonomic nervous system that calms the body, conserving energy
  4. 4. a nerve cell; the basic building block of the nervous system
  5. 5. (3 words) the brain and spinal cord
  6. 7. the neurons that carry outgoing information from the brain and the spinal cord to the muscles and glands
  7. 8. the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations.
  8. 9. (2 words) a neural impulse; an electrical charge that travels down an axon
  9. 10. a neuron’s bushy, branching extensions that receive messages and conduct impulses toward the cell body
  10. 12. (2 words) a fatty tissue layer segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one node to the next
  11. 15. the neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
  12. 16. the space between the dendrites of one neuron and the axons of another
  13. 17. the division of the PNS that controls the body’s skeletal muscles