Biological basis of behavior

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Across
  1. 3. a molecule that, by binding to a receptor site, inhibits or blocks a response.
  2. 5. chemical messengers that cross synaptic gaps between neurons.
  3. 8. the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron.
  4. 10. (3 words) the division of the perephrial nervous system that controls the body's skeletal muscles.
  5. 13. (3 words) the brain and spinal cord.
  6. 16. a neurotransmitter's reabsorption by the sending neuron
  7. 18. the level of stimulation required to trigger a neural impulse.
  8. 19. (2 words) the endocrine system's most influential gland; regulates growth and controls other endocrine glands.
  9. 21. (2 words) the body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous system.
  10. 22. (2 words)neurons that carry incoming information from the sensory receptors to the brain and spinal cord.
  11. 23. a simple, automatic response to a sensory stimulus, such as the knee-jerk response.
  12. 25. (4 words) a neuron's reaction of either firing (with full strength response) or no firing
  13. 26. (2 words)a fatty tissue layer segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one sausage-like node to the next.
  14. 28. (2 words) a period of inactivity after a neuron has fired.
  15. 29. (2 words)neurons that carry ongoing information from the brain and spinal cord to the muscles and glands.
  16. 30. (3 words) the part of the nervous system that controls the glands and the muscles of the internal organs.
  17. 31. (3 words)the sensory and motor neurons that connect the central nervous system to the rest of the body.
Down
  1. 1. (2 words) a neural impulse; a brief electrical charge that travels down an axon.
  2. 2. (2 words)a pair of endocrine glands that sit just above the kidneys and secrete hormones that help arouses the body in times of stress.
  3. 4. bundled axons that form neural "cables" connecting the central nervous system with muscles, glands, and sense organs.
  4. 6. (2 words) the body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream.
  5. 7. (3 words)the division of the autonomic nervous system that calms the body, conserving energy.
  6. 9. natural, opiate-like neurotransmitter's linked to pain control and to pleasure.
  7. 11. chemical messengers that are manufactured by the endocrine glands travel through the bloodstream and affect other tissues.
  8. 12. (2 words)the scientific study of the links between biological (genetic, neural, hormonal) and psychological processes.
  9. 14. (2 words) the tiny gap at the synapse junction
  10. 15. a neuron's bushy, branching extensions that recive messages and conduct impulses toward the cell body.
  11. 17. a molecule that, by binding to a receptor site, stimulates a response.
  12. 20. (3 words)the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations.
  13. 24. neurons within the brain and spinal chord that communicate internally and intervene between the sensory inputs and motor outputs.
  14. 27. a nerve cell; the basic building block of the nervous system.