Health Sciences 2300A/B Lecture 7: Lecture 7 Note - The Nervous System & The Central Nervous System Spinal Cord & The Peripheral Nervous System Spinal Nerves & Brachial Plexus

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

Document Summary

Class 7 note the nervous system & the central nervous system: spinal cord & the. Peripheral nervous system: spinal nerves & brachial plexus. Structural division of nervous system: central nervous system sits within a bony cage for protection, brain, spinal cord, peripheral nervous system is less protected as it travels to the periphery, cranial nerves, spinal nerves. Anatomic divisions of the nervous system: we primarily talk about the spinal cord and the pns, spinal nerves control all voluntary muscles in the body (except for the head) Sensory vs. motor: sensory, afferent information travels to cns to provide feedback about environment, ex. Touching a hot stove top: the signal travels back up the spinal cord so that we can make sense of that information: motor, efferent information travels from cns to control the environment, ex. Touching a hot stove top: move your hand away.