02biological - The Nervous System: Overview Biological...

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1 Biological Foundations The Nervous System: Overview The Nervous System Central Nervous System: This system consists of the brain and the spinal cord. Peripheral Nervous System: This system is made up of the Somatic Nervous System and the Autonomic Nervous System. The Nervous System Overview: Autonomic Nervous System ± Sympathetic Nervous system ± Prepares body to respond to emergencies ± Plays important role in reactions to stress. ± Concerned with the mobilization of energy. ± Parasympathetic Nervous System ± Acts antagonistically with the sympathetic nervous system. ± Restores the body to a normal state. Autonomic Nervous System The Nervous System: The Brain ± The command center of the Body ± Hindbrain ± Medulla, pons, cerebellum ± Midbrain ± Major pathway for sensory and motor impulses moving between the forebrain and hindbrain. The Nervous System: The Brain ± Forebrain ± Diencephalon Thalamus Hypothalamus ± Telecephalon Two hemispheres of cerebral cortex
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2 The Nervous System: The Brain ± L imbic system ± Amygdala, hippocampus play a role in stress and emotion ± Amygdala: detect threat ± Hippocampus: emotional memories ± Emotional functioning ± Cingulate gyrus ± Septum, areas of hypothalamus The Nervous System: The Role of Neurotransmitters ± Neurotransmitters ± chemicals that regulate nervous system functioning. ± Catecholamines ± epinephrine and norepinephrine promote sympathetic nervous system activity. ± released in substantial quantities during stressful times. The Endocrine System: Overview ± Complements nervous system in controlling bodily activities. ± Made up of ductless glands which secrete hormones into the blood. ± Governs slow-acting, long duration responses ± Regulated by hypothalamus and pituitary gland. The Endocrine System ± Hypothalamus ± Neural structure lying below (hypo) the thalamus ± Directs several maintenance activities ± Eating ± Drinking ± Body temperature ± Helps govern the endocrine system via the pituitary gland ± Is linked to emotion The Endocrine System: Figure 2.3 Pituitary and Adrenal Glands ± Hormones ± Chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another ± Adrenal Glands ± A pair of endocrine glands just above the kidneys ± Secrete the hormones epinephrine (adrenaline) and norepinephrine (noradrenaline), which help to arouse the body
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This note was uploaded on 09/08/2010 for the course PSYC 190 at San Jose State.

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02biological - The Nervous System: Overview Biological...

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