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Body & Mind. The Nervous System. The Brain. Weighs about 3 pounds Extremely complex! Part of CNS (Central Nervous System). The Spinal Cord. Communication superhighway! Carries out reflexes Transmits information to brain Transmits information from brain to muscles and organs
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The Brain • Weighs about 3 pounds • Extremely complex! • Part of CNS (Central Nervous System)
The Spinal Cord • Communication superhighway! • Carries out reflexes • Transmits information to brain • Transmits information from brain to muscles and organs • Part of CNS (central nervous system)
The Peripheral Nervous System • Made up of the Autonomic and Somatic divisions • Somatic—controls voluntary movements • Autonomic—controls involuntary movements (includes the sympathetic and parasympathetic divisions)
So How Does the BRAIN figure into all of this? • Organizes our movements • Organizes our thoughts • Forms our emotions • Produce our behaviors
Let’s divide the brain into 3 sections Color in each section
Hindbrain • Medulla, pons, cerebellum, & lower part of reticular activating system • STOP—With a partner, define each term above
Hindbrain definitions • Medulla-vital functions: heart rate, blood pressure, breathing • Pons—regulates body movement, attention, sleep, and alertness • Cerebellum—cauliflower shaped, coordinates movement • Reticular activating system—imp’t for arousal, attention, and sleep
Midbrain • Contains part of reticular activating systems • Helps process some visual and auditory information
Forebrain • The part of our brain that allows for complex thinking! • Thalamus, hypothalamus, limbic system, cerebrum • STOP—With a partner, define each term above
Forebrain definitions • Thalamus—relay station for sensory information (except for smell) • Hypothalamus—helps regulate body temp., hunger, thirst, sex drive, aggression • Limbic system—(includes hippocampus and amygdala) learning, memory, emotion, hunger, sex, aggression • Cerebrum—makes up 70% of brain and its surface is covered with the cerebral cortex (all the hills and valleys). Plays a role in memory, language, emotions, complex motor functions, perception and much, much more!
The 4 Lobes of the Brain • FPOT (Frontal, Parietal, Occipital, Temporal)