BIOLOGY 101 Lecture Notes - Lecture 9: Neurotransmitter Receptor, Arrector Pili Muscle, Vagus Nerve

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Our senses: sight, sound, touch, taste, smell, and properception cns- brain and spinal cord (voluntary and involuntary nervous system) respond- effector, movement. Two major divisions: central nervous system (cns) Consists of the brain and spinal cord. Integrates incoming information and coordinates voluntary and involuntary nervous functions: peripheral nervous system (pns) Consists of ganglia and the nerves that branch from the cns. Keeps the cns in contact with the rest of the body. Somatic nervous system: receives sensory information and directs voluntary movement. Automatic nervous system: regulates involuntary activities: sympathetic nervous system: is in charge during stressful or emergency conditions, parasympathetic nervous system: adjusts bodily function so that energy is conserved during nonstressful times. The protective structures of the central nervous system. Bones of the skull and vertebral column. The meninges: dura mater outermost layer, arachnoid middle layer, pia mater innermost layer. It is caused by bacteria and viruses and can lead to encephalitis (inflammation of the brain).

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