Kinesiology 2241A/B Lecture Notes - Lecture 6: Neuromuscular Junction, Golgi Tendon Organ, Elastic Energy

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Thomas Richard Jenkyn

Document Summary

Peripheral nervous system: nerve branch pairs, 12 cranial, 31 spinal, plexuses (mixes things up for no good reason, cervical, brachial, lumbar, sacral. Nerve branch pairs: between each pair of spinal vertebral a pair of nerves leave the spinal column. Plexus: after leaving the spinal column the nerves reconnect and form new branching. Types of nerves: the peripheral nervous system has two types of nerves. It is the motor nerves that carry commands from the brain to the muscles, causing voluntary movement. Lumbar nerve (purple) : lower back and front of legs toe, but the pain may originate from your lower back. Sacral nerve (red) : cover the genital area, the butt, and down the back of the legs. Sensory nerves enter the brain and spinal column in pairs at distinct levels: the area of the body "felt" by a specific nerve pair is called a dermatome, dermatomes differ slightly between people, but they can be mapped.