Chapter 3 Part 1 - The Brain & Nervous System (part 1)...

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Today’s topics Architecture of the Nervous System The Cortex The Brain & Nervous System (part 1)
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Nervous System Chapter 3: The Architecture of the Nervous System
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Peripheral Nervous System Consists of nerves connecting CNS to rest of body Efferent nerves – carry signals away from CNS and toward rest of body Afferent nerves – carry signals from body to CNS 43 pairs of nerves 31 spinal nerves – connect to spinal cord 12 cranial nerves – connect directly to brain Chapter 3: The Architecture of the Nervous System
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Somatic vs. Autonomic Nervous System Chapter 3: The Architecture of the Nervous System Somatic Nervous System - Enables voluntary control over muscles and transmits information from the sense organs to the brain. Autonomic Nervous System - Automatically controls our internal functions like heartbeat, digestion, etc. - Divided into the sympathetic and parasympathetic divisions.
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Central Nervous System Chapter 3: The Architecture of the Nervous System Hindbrain controls vital functions (e.g. breathing, heart beat, etc), coordinates movement Midbrain involved in coordinating movement and relaying information from senses to various parts of brain Forebrain involved in higher-level processing (e.g. thinking, problem solving, language, memory, emotions, etc)
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Hindbrain Medulla Certain bodily functions not consciously willed (e.g. breathing, heart rate, salivation, coughing, sneezing) Pons Brain’s overall level of arousal/attentiveness Also involved in coordinated
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Chapter 3 Part 1 - The Brain & Nervous System (part 1)...

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