Karteikarten
Psyc 1315
Karten in diesem Stapel (23)
- 1Nervous SystemThe body's electrochemical communincation circuitry.
- 24 Characteristics of the Nervous System-Complexity
-Integration
-Adaptability
-Electrochemical Transmission - 3plasticityThe brain's special physical capacity for change.
- 4Afferent nerves (sensory nerves)Nerves that carry information about the external environment to the brain and spinal cord via sensory receptors.
- 5Efferent nerves (motor nerves)Nerves that carry information out of the brain and spinal cord to other areas of the body.
- 6central nervous system (CNS)The brain and spinal cord
- 7peripheral nervous system (PNS)The network of nerves that connects rhe brain and spinal cord to other parts of the body.
- 8somatic nervous systemThe body system consisting of the sensory nerves, whose function is to convey information from the skin and muscles to the CNS about conditions such as pain and temperature, and the motor nerves, whose function is to tell muscles what to do
- 9autonomic nervous systemThe body system that takes messages to and from the body's internal organs, monitoring such processes as breathing heart rate, and digestion.
- 10sympathetic nervous systemThe part of the autonomic nervous system that arouses the body to mobilize it for action and thus is involved in the experience of stress.
- 11parasympathetic nervous systemThe part of the autonomic nervous system that calms the body.
- 12neuronsOne of two types of cells in the nervous system; neurons are the type of nerve cell that handles the information processing function.
- 13mirror neuronsNerve cells in the brain that are activated (in human and nonhuman primates) both when an action is performed and when the organism observes the action being performed by another.
- 14glial cells or gliaThe second of two types of cells in the nervous system; glial cells provide support, nutritional benefits, and other functions, and keep neurons running smoothly.
- 15cell bodyThe part of the neuron that contains the nucleus, which directs the manufacture of substances that the neuron needs for growth and maintenance.
- 16dendritesTreelike fibers projecting from a neuron, which receive information and orient it toward the neurons cell body
- 17axonThe part of the neuron that carries information away from the cell body toward other cells.
- 18myelin sheathA layer of fat cells that encases and insulates most axons.
- 19resting potentialThe stable negative charge of an inactive neuron.
- 20action potentialThe brief wave of positive electrical charge that sweeps down the axon.
- 21all-or-nothing principleThe principle that once the electrical impulse reaches a certain level of intensity(its threshold), it fires and moves all the way down the axon without losing any intensity.
- 22synapsesTiny spaces between neurons; the gaps between neurons are referred to as synaptic gaps.
- 23neurotransmittersChemical substances that are stored in very tiny sacs within the terminal buttons and involved in transmitting information across the synaptic gap to the next neuron.