Health Sciences 2300A/B Lecture Notes - Lecture 4: Central Nervous System, Spinal Nerve, Cranial Nerves

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2300A/B
• Professor: Gillian Gabriela Corbo

Document Summary

The nervous system: explain the classification of the nervous system. Structural division of nervous system: central nervous system (cns) sits within a bony cage for protection, brain, spinal cord, peripheral nervous system (pns) is less protected as it travels to the periphery, cranial nerves, spinal nerves. *muscles/voluntary muscles in the body are controlled by the cranial nerves, except for ones in the head. Sensory sensations, feelings of the environment: motor sending out signals to produce movement. Afferent information travels to cns to provide feedback about the environment: e. g. , information from skin on how hot a pan is travels through sensory nerves back to cns, motor. Efferent information travels from cns to control the environment: e. g. , information from cns travels to your arm to punch someone, sending signals to your voluntary muscles or glands. Sympathetic vs. parasympathetic: sympathetic vs. parasympathetic chart is pretty intuitive, ex. Identify the main components of the cns: discuss the main anatomical features of the spinal cord.