Science Olympiad Anatomy and Physiology Latest Update graded A+

Science Olympiad Anatomy and Physiology Latest Update graded A+ Dendrite Receive stimulus and carries it impulses toward the cell body. Cell Body with nucleus Fiber which carries impulses away from cell body schwann cell cells which produce myelain or fat layer in the PNS Myelin Sheath Lipid layer around the axon; which insulates the axon Node Ranvier Gaps or nodes in the myelin sheath impulse -self propagating -mechanism, potassium and sodium pump synapse -junction between neurons -the neurons do not actually tough at the synapse -neurotransmitters used to restart impulse in dendrite of 2nd neuron neurotransmitters -chemicals in the junction which allow impulses to be started in the second neuron brain know these terms: -brain stem -diencephalon -cerebellem -cerebrum spine know these terms: -spinal cord lobes of the cerebrum frontal, parietal, temporal, occipital special regions (of the brain) broca's area, wernicke's area, limbic system brain waves patterns - beta -concentration, arousal, alertness, cognition -higher levels associated with anxiety, diease, feelings of sparation, fight or flight brain waves patterns - alpha -relaxation, superlearning, relaxed focus, light trance, increased serontonin production -pre-sleep, pre-walking drowsiness, mediation, beginning of access to unconscious mind brain waves patterns - theta -dreaming sleep (REM sleep) -increased production pf catecholamines, increased creativity -integrative, emotional experiences, potential change in behavior, increased retention of learned material -hypnagogic imagery, trance, deep mediation, access to unconscious mind delta -dreamless sleep -human growth hormone released -deep, trance-like, non-physical state, loss of body awareness -access to unconscious and "collective unconscious"