Overview -organization of motor systems Motor cortex Brain Stem Spinal cord a-motor neuron Final common pathway Skeletal muscle
Overview - organization of motor systems Motor Cortex Brain Stem Spinal Cord Skeletal muscle a-motor neuron Final common pathway
Final common path-a-motor neuron (+) muscle Transmitter? fibers Schwann cells motor nerve fiber axon hillock Receptors? acetylcholine esterase NM junction
Final common path - a-motor neuron (-) muscle fibers (+) (-) (+) axon hillock motor nerve fiber NM junction Schwann cells Receptors? acetylcholine esterase Transmitter?
Final Common Pathway a motor pathway consisting of the motor neurons by which nerve impulses from many central sources pass to a muscle in the periphery
Final Common Pathway, a motor pathway consisting of the motor neurons by which nerve impulses from many central sources pass to a muscle in the periphery
II Motor Functions of the spinal Cord- Spinal reflex
II Motor Functions of the Spinal Cord – Spinal Reflex
Spinal reflexes o Somatic reflexes mediated by the spinal cord are called spinal reflexes o These reflexes may occur without the involvement of higher brain centers o Additionally. the brain can facilitate or inhibit them
Spinal Reflexes ⚫ Somatic reflexes mediated by the spinal cord are called spinal reflexes ⚫ These reflexes may occur without the involvement of higher brain centers ⚫ Additionally, the brain can facilitate or inhibit them