AP Psych

  1. Nervous system
    the body's speedy, electrocharged communication network consisting of all the nerve cells of the periphrial and central nervous systems
  2. Central Nervous system
    • CNS
    • consists of the brain and spinal chord
  3. Peripheral Nervous system
    • PNS
    • the sensory motor neurons that connect the centeral nerous system (CNS) to the rest of the body (sense receptors, muscles, glands)
  4. Nerves
    • neural "cables" containing many axons. these bundled axons, which are apart of the PNS, connect the centeral nervous system with glands, muscles and organs
    • optic nevre bundles a million axon fibers into a single acble carrying information into a single cable carrying information that each eye sends to the brain
  5. Sensory Neruons
    • neurons that carry incoming info from the sense receptors to the central nervous system
    • form sensory organs to body tissues, info goes to the CNS for processing
    • afferent neurons
  6. Motor neurons
    • neurons that carry outgoing information from the central nerveous systems to the muscles and glands
    • think locomotives; what keeps the information traveling from point A to point B
    • efferent neurons
  7. Interneurons
    • CNS neurons that internally communicate and intervene between the sensory inputs and motor outputs
    • there are billions o these types of neurons
    • they act as a"middle man" between synapses
  8. Somatic Nervous system
    • controls the body's skeletal muscles
    • also called the skeletal nervous system
    • a division of the PNS
  9. Autonomic nervous system
    • controls the glands the msucles of the internal organs (like the heart) its sympathetic division arouses; its parasympathetic division calms.
    • includes digestoinn, heartbeat and gland activity
    • a division of the PNS
  10. Sympathetic Nervous system
    • arouses the body, mobilizing its energy in stressful situations
    • division of the Autonomic nervous system
    • if something alarms enrages, or challenges you this system will accelerate your heartbeat, raise your blood pressure, slow digestion, raise blood sugar, casue you to perspire, to prepare you for action
  11. Parasympathetic Nervous system
    • this system calms the body in order to preserve energy
    • division of theAutonomic nervous system
    • slows heartbeat, lowers blood pressure, etc
    • *symp and parasymp work together to keep us in a steady internal state
  12. Reflex
    • a simple automatic inborn response to a sensory stimulus
    • knee-jerk response
  13. Neural netoworks
    • interconnected neural cells
    • with experience, networks cal leearn as feedback strengthens or inhibits connections that produce certain results
  14. Endocrine system
    • the body's "slow" communication system
    • a set of glands that secrete hormones
  15. Hormones
    • Chemical messages that are produced in one tissue and effect another.
    • mostly manufactured by the endocrine glands
  16. Adrenal Glands
    • a pair of endocrine glands just baove the kidneys. the adrenals secrete epinephrine (adrenaline) and norenephrine (noradrenaline)
    • helps arouse the body in times of stress
  17. Pitutitary gland
    • the gland regulating growth
    • most important gland in the endocrine system
Card Set
AP Psych
neural/hormonal systems