Evaluation of reflex changes. 1  Muscle: Stretch reflexes are depressed in parallel to loss of strength. 2  Neuromuscular junction: Stretch reflexes are depressed in parallel to loss of strength. 3  Peripheral Nerve: Stretch reflexes are depressed, usually out of proportion to weakness (which may be minimal).
Spinal cord: The major column of nerve tissue that is connected to the brain and lies within the vertebral canal and from which the spinal nerves emerge. Thirty-one pairs of spinal nerves originate in the spinal cord: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. The spinal cord and the brain constitute the central nervous system. The spinal cord consists of nerve fibers that transmit impulses to and from the brain. Like the brain, the spinal cord is covered by three connective-tissue envelopes called the meninges.
spine. 1. a thornlike process or projection; called also acantha and spina. 2. the rigid bony structure in the midline of the back, composed of the vertebrae; called also backbone, spinal column, and vertebral column.The spinal column is the axis of the skeleton; the skull and limbs are in a sense appendages.pine. 1. a thornlike process or projection; called also acantha and spina. 2. the rigid bony structure in the midline of the back, composed of the vertebrae; called also backbone, spinal column, and vertebral column.