PSYCH 105 Lecture 6Outline of Current Lecture I. The Nervous SystemII. The Autonomic Nervous SystemIII. The Endocrine SystemIV. NeuroanatomyV. Imaging TechniquesVI. The Plastic BrainCurrent LectureI. The Nervous System- CNS: Central Nervous System; Division of nervous system that consists of the brain and spinal cord- PNS: Peripheral Nervous System; division of the nervous system that includes all nerves lying outside of the CNS- Somatic Nervous System: Subdivision of PNS that communicates sensory information to the CNS and carries voluntary motor messages from CNS to muscleso Part of the Peripheral Nervous SystemII. The Autonomic Nervous System- Autonomic Nervous System: Subdivision of the PNS that regulates involuntary functionso Sympathetic Nervous System: Branch of autonomic nervous system thatproduces rapid physical arousal in response to emergencies or threatso Parasympathetic Nervous System: Branch of the autonomic nervous system that maintains normal bodily functions and conserves the body’sphysical resourcesIII. The Endocrine System System of the glands throughout the body that secrete hormones into the bloodstream Hormones: Chemical messengers secreted into the bloodstream primarily by endocrine glands  Pituitary gland: regulates the activities of many glands while producing growth hormone, prolactin, and oxytocinThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Adrenal glands: Regulate the human stress response and the release of norepinephrine and epinephrine Gonads: Sex organs that produce estrogen, progesterone, and androgens such as testosterone; responsible for regulating sexual characteristics and reproductive processesIV. Neuroanatomy Small ants has the largest “Brain to Body Mass” RatioV. Imaging Techniques Computed Tomography (CT)o CT Scan: Series of X-ray beams pass through the head to produce cross-sectional images of the brain. Shows structure but not function! Positron Emission Topography (PET)o PET Scan: Radioactive material is injected or inhaled and then is able to be detected with scanner to produce an image. Provides image of brain activity Magnetic Resonance Imaging (MRI): Functional MRI (fMRI) detects changes in blood flow to particular areas of the brain providing an anatomical and functionalview!o MRI: Uses the detection of radio frequency signals produced by displaced radio waves in a magnetic field to provide an anatomical view of the brainVI. The Plastic Brain Neuroplasticity: the brain’s ability to change structure and function Functional plasticity: Brain’s ability to shift function from damaged area to an undamaged areao Strokes, Amputations Synaptic plasticity: Changes between different synapses that make synapses more or less likely to occuro Learning, Memory Structural plasticity: Brain’s ability to change in physical structure in response to learning, active practice, or environmental stimulationo Meditation,