PSY 750 Chapter Notes - Chapter 1: Sympathetic Nervous System, Semipermeable Membrane, Neuroglia
Document Summary
The human nervous system: the central and peripheral nervous systems. Functions of the nervous system input of sensory info processing and integration of info already stored info output of messages to muscles and glands. The central nervous system brain and spinal cord blood-brain barrier semi-permeable membrane-like mechanism that prevents some chemicals from passing between the bloodstream and the brain. The anatomy of neurons dendrites, soma, axon, myelin sheath, terminal button, synapse. Na+ channel open, na+ rushes in resting potential reverses (+40 mv) The brain s control of behavior: brain structures and their function. The hindbrain: basic life support medulla - breathing, muscle tone, and regulating circulation pons - sleep and arousal cerebellum - coordination of voluntary movement and sense of equilibrium. The midbrain: neural relay stations part of the brainstem between hindbrain and forebrain reticular formation - modulates muscle reflexes, breathing and pain perception also regulates sleep, wakefulness, and arousal sensory reflexes: superior & inferior colliculus.
