Lecture2_revised - Psychology 110: Biological Psychology...

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Unformatted text preview: Psychology 110: Biological Psychology Lecture 2: The structure of the nervous system Recap of Lecture 1 by the beginning of the 20 th century we understood that the brain processed information using electrical signals we also understood that different areas of the brain were responsible for processing different types of information brain areas involved in language, sensory and motor processing had all been identified Outline of Lecture 2 major components and organization of the nervous system structure of the brain and its major subdivisions life-span development of the brain (ontogenetic development) and development of the brain through evolution (phylogenetic development) anatomy of the individual components of the nervous system, i.e. neurons Overall organization of the nervous system The nervous system has two main components, the central nervous system, comprising the brain and spinal cord, and the peripheral nervous system which consists of the nerves that innervate our muscles and internal organs. Navigating the body Dogs nervous system Stylized brain and spinal cord NEURAXIS The brain and spinal cord of most animals lie in the same axis, which defines the neuraxis DORSAL VENTRAL ROSTRAL CAUDAL Navigating the body Human nervous system Stylized brain and spinal cord NEURAXIS The upright posture of the human produces a bend in the neuraxis, with the brain lying in a different axis to the spinal cord Navigating the body DORSAL VENTRAL ANTERIOR or ROSTRAL P O S T E R IO R o r C A U D A L The bend in the human neuraxis has implications for how we refer to the different parts of the human nervous system Navigating the body We can transect the human body in three different planes The organization of the nervous system Central Nervous System: brain spinal cord Peripheral Nervous System: cranial nerves...
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Lecture2_revised - Psychology 110: Biological Psychology...

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