Outline Spinal Cord, Spinal Nerves, Somatic Reflexes-Chapter 13 Reflexes- they are involuntary stereotyped responses to stimuli, they involve the brain, spinal cord, and peripheral nerves Spinal cord- cylinder nervous tissue that begins at the foramen magnum and passes through the vertebral canal as far as the inferior margin of the first lumbar vertebrae (L1), 18 inches long and ½ inches wide Anterior Median Fissure- in the front, deeper Posterior Median Sulcus- in the back, shallow &…showed first 75 words of 3614 total…

…showed last 75 words of 3614 total…can send the message to the vasomotor center and to the medulla oblongata to open or to minimize the diameter to prevent heat loss, blood pressure 8. Control of the day and night cycle (circadian rhythms) Superior Colliculi- control reflex movements of the eyes, head and neck to visual stimuli such as a bright light Inferior Colliculi- control movement of the head, neck, and trunk in response to auditory stimuli such as a loud noise Pons-